Switch Disconnector Switch Disconnector with Fuse 3NJ62 System Manual * 11/2009 Answers for infrastructure. SENTRON Switch Disconnectors with Fuses, In-Line Design 3NJ62 Introduction 1 Product description 2 Functions 3 Mounting 4 Configuration 5 Technical specifications 6 Dimensional drawings 7 Schematics 8 System Manual 11/2009 711 6114-02 DS 03 Legal information Warning notice system This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are graded according to the degree of danger. DANGER indicates that death or severe personal injury will result if proper precautions are not taken. WARNING indicates that death or severe personal injury may result if proper precautions are not taken. CAUTION with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken. CAUTION without a safety alert symbol, indicates that property damage can result if proper precautions are not taken. NOTICE indicates that an unintended result or situation can occur if the corresponding information is not taken into account. If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property damage. Qualified Personnel The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation for the specific task, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with these products/systems. Proper use of Siemens products Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems. The permissible ambient conditions must be adhered to. The information in the relevant documentation must be observed. Trademarks All names identified by (R) are registered trademarks of the Siemens AG. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner. Disclaimer of Liability We have reviewed the contents of this publication to ensure consistency with the hardware and software described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions. Siemens AG Industry Sector Postfach 48 48 90026 NURNBERG GERMANY Ordernumber: 3ZX1012-0NJ62-1AC1 12/2009 Copyright (c) Siemens AG 2009. Technical data subject to change Table of contents 1 Introduction................................................................................................................................................ 7 2 Product description .................................................................................................................................... 9 3 4 5 2.1 Overview ........................................................................................................................................9 2.2 Benefits ........................................................................................................................................11 2.3 Application....................................................................................................................................11 2.4 Basic versions ..............................................................................................................................12 2.5 Accessories..................................................................................................................................12 2.6 Design ..........................................................................................................................................13 Functions ................................................................................................................................................. 15 3.1 Mode of operation ........................................................................................................................15 3.2 Electronic fuse monitoring............................................................................................................17 3.3 Motorized operation .....................................................................................................................36 3.4 Connection method......................................................................................................................37 3.5 Current transformers and current transformer busbars ...............................................................37 3.6 Ammeters.....................................................................................................................................38 Mounting.................................................................................................................................................. 39 4.1 Mounting size 00..........................................................................................................................39 4.2 Mounting size 1 ............................................................................................................................46 4.3 Mounting sizes 2 and 3 ................................................................................................................53 Configuration ........................................................................................................................................... 61 5.1 Installation data ............................................................................................................................61 5.2 Rated currents..............................................................................................................................62 5.3 Configuration rules.......................................................................................................................63 6 Technical specifications........................................................................................................................... 65 7 Dimensional drawings.............................................................................................................................. 77 7.1 2-/3-pole switch disconnectors.....................................................................................................77 7.2 4-pole switch disconnectors.........................................................................................................79 7.3 Position of the phases, terminal bolts, and current transformers ................................................80 7.4 Current transformers....................................................................................................................81 7.5 Ammeters.....................................................................................................................................83 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 5 Table of contents 8 6 Schematics .............................................................................................................................................. 85 8.1 Switching examples .................................................................................................................... 85 8.2 8.2.1 8.2.2 Terminal connection diagram of the multi-function plugs ........................................................... 92 Manually operated switch disconnectors .................................................................................... 92 Switch disconnectors with motorized operating mechanism ...................................................... 92 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 1 Introduction Purpose of the manual The "SENTRON 3NJ62 inline switch disconnectors with fuses" manual describes the basic functions of the switchgear range. It contains information about selection, configuring, and commissioning. In addition to the main devices, it also includes details of accessories. Furthermore, to facilitate configuration, the manual contains dimension drawings, circuit diagrams, and technical specifications of the switchgear and accessories. All explanations in the manual regarding sizes 00, 1, 2, and 3 relate to the BS versions. However, please also refer to the technical specifications in chapter 6, which differ in a few respects for the two fuse types (LV HRC and BS). Usage in the manual LV HRC versions BS versions Size 00 3NJ620 3NJ624 3NJ625 3NJ626 Size 1 3NJ621 3NJ627 Size 2 3NJ622 3NJ628 Size 3 3NJ622 3NJ623 Required basic knowledge A general knowledge of low-voltage controls and distribution is required to understand this manual. Symbols used in the text The following table explains the meaning of the various symbols used within this document: Symbol Meaning LED illuminated LED not illuminated 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 7 Introduction 8 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 2 Product description 2.1 Overview All key product features at a glance Type tested according to IEC EN 60947-3 Voltage levels to 690 V AC and 440 V DC 160 A to 630 A for LV HRC fuse links according to IEC 60269-1 / EN 60269-1 or fuse links according to BS 88 2-/3-/4-pole versions available 185 mm center-to-center clearance of plug-in contacts Developed for switchgears in plug-in design Horizontal or vertical mounting position Front panel locked in ON position Degree of protection IP41 With electronic fuse monitoring devices (EFM) Manually operated or with motorized operating mechanism Size 00 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Size 1 Sizes 2 and 3 9 Product description 2.1 Overview Overview of components and accessory parts 11 Terminals 12 Stud terminal 2 Manually operated mechanism 13 Terminal cover 3 Motorized operating mechanism 14 Multi-function plugs 4 Connection module 15 Holder for measuring instrument with electronic fuse monitoring device (EFM10) 5 Blanking cover for empty sections 16 Holder for measuring instrument with electronic fuse monitoring device (EFM20/25) 6 Guide rails 17 Holder for measuring instruments without EFM 7 Busbar cover 18 Bi-metal measuring instrument 8 Contact extension 19 Moving-iron measuring instrument 9 Current transformer 20 BS fuse 21 LV HRC fuse 22 Auxiliary switch 1 3NJ62 switch disconnector basic device, here in size 00, open, without front panel 10 Current transformer busbar 10 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Product description 2.2 Benefits 2.2 Benefits Advantages for switchgear manufacturers Compact, modular design Simple and efficient mounting due to incoming plug-in contact High packing density in the field Cable connection with clamps or lugs Can be mounted in different control cabinet depths Comprehensive range of accessories Advantages for users Conversion, retrofitting, and replacement without switching off the switchgear Dead-state fuse replacement Maintenance free High personnel safety Operating handle can be locked in OFF position Clear and unambiguous switch position indicator 2.3 Application The plug-in 3NJ62 switch disconnectors with fuses are installed in low-voltage distribution boards where a minimum amount of space is available for a maximum number of cable ducts to the power distribution. They can be easily fitted in all common control cabinets (minimum depth: 400 mm). The plug-in 3NJ62 switch disconnectors with fuses are available for rated uninterrupted currents of 160 A to 630 A. LV HRC fuse links according to IEC 60269-1 / EN 60269-1 or BS fuse links according to BS 88 provide overload and short-circuit protection up to 690 V AC/440 V DC. The switch disconnectors can be retrofitted at any time with electronic fuse monitoring devices, auxiliary switches, an ammeter (48 mm x 48 mm), and up to four current transformers, with no extra space required. For installation in control cabinets with a depth > 400 mm, the mounting depth of the disconnectors can be increased by 200 mm using a contact extension. Further installation accessories, such as guide rails and blanking covers for empty sections, complete the product range. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 11 Product description 2.4 Basic versions 2.4 Basic versions Basic version types The 3NJ62 product range comprises four sizes covering the current range up to 630 A. All types are designed as 2-/3-/4-pole switch disconnectors with fuses. The devices are suitable for use at up to 690 V AC/440 V DC. The basic versions are divided into the following types: Switching capacity Standard High 2) 2.5 Operation 1) LV HRC fuses BS fuses 2-pole 3-pole 4-pole 2-pole 3-pole 4-pole Manual - 160...630 A 160...630 A - - 160...630 A Motorized - - 160...630 A - - 160...630 A Manual 160...630 A 160...630 A - 160...630 A 63...630 A - Motorized 160...630 A 160...630 A - 160...630 A 160...630 A - 1) Standard switching capacity: * Utilization category AC22B * Rated short-circuit making capacity 55 kA 2) High switching capacity: * Utilization category AC23B * Rated short-circuit making capacity 66 kA Accessories The following accessories are available in addition to the main devices: Electronic fuse monitoring devices Current transformers Ammeters Auxiliary switches Multi-function plugs Terminals Terminal covers Guide rails Blanking covers Busbar covers 12 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Product description 2.6 Design 2.6 Design Compact and modular design All sizes fit busbar systems with a 185 mm center-to-center clearance, and have the same width and depth as well as a uniform 50 mm grid with regard to mounting height (50, 100, or 200 mm). This enables an in-line disconnector panel to be set up with any combinations of different sizes. Subsequent replacement of in-line disconnectors of different sizes is easy. Furthermore, the user-friendly hinged handle is retractable in both the ON and the OFF state, so that the compact design is retained in both switch positions. On device versions with a motorized operating mechanism the motor is integrated in the contour of the housing. The electronic fuse monitoring device (EFM) can be upgraded as an accessory or it can be supplied ready mounted from the factory. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 13 Product description 2.6 Design 14 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 3 Functions 3.1 Mode of operation Operation The plug-in switch disconnectors are fitted with a snap-action mechanism and are switched by turning the handle approx. 45. Once actuated, the handle is folded against the front panel in the ON or OFF position for safety reasons. Indication A unique switch position indication is output by the indicator in the inspection window of the in-line disconnector (ON "I" = red, OFF "O" = green). The switch position indicator is mechanically linked to the moving switching contacts. Voltage test In the event of a voltage test on the fuse links, the transparent insert in the front panel is opened. Personnel safety The switch disconnectors are type tested according to IEC 60947-3 and have degree of protection IP41 in the operating state. The special locking mechanism on the handle ensures that the in-line disconnector must be switched off before it is possible to open the cover and remove the fuses. A switchgear key according to DIN 43668 is also required to open the cover. Disconnection during the switching operation (snap-action mechanism) is implemented before and after the fuse link. This ensures that, if power is supplied over the busbars or via the cable connecting side, the fuse links are in a dead state when switched off. Locking In the OFF position, the handle can be padlocked (padlock O: 6 mm) to protect against unintentional restarting. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 15 Functions 3.1 Mode of operation Switch position OFF ON "OFF" position, display "ON" position, display "OFF" position, operating lever in OFF position "ON" position, operating lever in OFF position "OFF" position, operating lever in end position "ON" position, operating lever in end position 16 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring 3.2 Electronic fuse monitoring Electronic fuse monitoring devices EFM - overview The electronic fuse monitoring devices EFM 10 and EFM 20/25 are mounted at the factory in the 3NJ62 or must be installed as accessory 3NJ69 by the customer. The EFM 10 and the EFM 20 for monitoring AC systems (up to Uin = 690 V) work regardless of whether or not a load is present. They detect, signal, and indicate the states of the fuses. The EFM 25 is designed for monitoring DC systems (up to Uin = 440 V). Figure 3-1 3NJ62 size LV HRC1 with electronic fuse monitoring device (EFM 10) Figure 3-2 3NJ62 size LV HRC1 with electronic fuse monitoring device (EFM 20/25) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 17 Functions 3.2 Electronic fuse monitoring Typical applications of the EFM If a fuse fails, a "general fault" is signaled to a control room by means of integrated auxiliary switches (1 signaling relay with 1 changeover contact). If a fuse fails, a load is disconnected, e.g. via the optional integral motorized operating mechanism. Possible areas of application for the EFM The 3NJ62 switch disconnector with fuse may be used as follows to ensure safe isolation in conjunction with the EFM: EFM 10 and EFM 20: 3-phase, sine wave AC systems (50/60 Hz) up to 690 V EFM 25: DC systems up to 440 V Principle of the EFM 10 The electronic fuse monitoring device EFM 10 is supplied via the phases of the AC system. It works according to the closed-circuit principle: The signaling relay is normally energized (no fault). The electronic fuse monitoring device measures the voltages upstream and downstream of the three fuses. If the voltage drop at one of the three fuses exceeds 13 V 10%, the following operating states occur: The electronic fuse monitoring device trips The signaling relay (changeover contact) drops out as the general alarm output The red LED on the fuse concerned lights up. The red LED and the signaling relay always indicate the current states of the fuses. The states are not stored. The green LED indicates that power is being supplied to the electronic fuse monitoring device. 18 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring Circuit diagram of the EFM 10 / / / $&7,9( )$8/7/ )$8/7/ ) ) ) )$8/7/ 0LFUR FRQWUROOHU 5HOD\ Figure 3-3 3NJ62 size LV HRC00, internal wiring with EFM 10 WARNING The green LED does not light up if the electronic fuse monitoring device is connected in a way other than that described above when the infeed is live and more than one fuse is faulty! In this case, the EFM's internal power supply can no longer be guaranteed (refer to "Voltage tap for the internal power supply and direction of the incoming supply" below)! WARNING If the EFM is built into the 3NJ62 and not all lines of the changeover contact are wired to the multi-function plug, the exposed cable ends must be electrically insulated. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 19 Functions 3.2 Electronic fuse monitoring Principle of the EFM 20 The electronic fuse monitoring device EFM 20 is supplied via the three phases L1, L2, and L3 of the AC system. It works according to the closed-circuit principle (default setting): The signaling relay is normally energized (no fault). The electronic fuse monitoring device measures the voltages upstream and downstream of the three fuses. If the voltage drop at one of the three fuses exceeds 13 V 10%, the following operating states occur: The electronic fuse monitoring device trips The signaling relay drops out The corresponding signal is indicated on the display If line monitoring is active, the following signals may also be output: "Undervoltage" line function active "Overvoltage" line function active "Phase failure" line function active The illuminated display indicates that power is being supplied to the electronic fuse monitoring device. 20 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring Circuit diagram of the EFM 20 / / / 'LVSOD\ ) ) ) 0LFUR FRQWUROOHU 5HOD\ 5HOD\ Figure 3-4 3NJ62 size LV HRC00, internal wiring with EFM 20 WARNING The display is not illuminated if the electronic fuse monitoring device is connected in a way other than that described above when the infeed is live and more than one fuse is faulty! In this case, the EFM's internal power supply can no longer be guaranteed (refer to "Voltage tap for the internal power supply and direction of the incoming supply" below)! WARNING If the EFM is built into the 3NJ62 and not all lines of the changeover contact are wired to the multi-function plug, the exposed cable ends must be electrically insulated. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 21 Functions 3.2 Electronic fuse monitoring Cable designation Terminal designation Cable color Size LV HRC 00 LV HRC 1 LV HRC 2, LV HRC 3 Cable designation Pick-off at fuse holders with AC (infeed plug-in contacts) Pick-off at fuse holders with DC (infeed plug-in contacts) Relay 1 Relay 2 22 X1 (L1) Black 1 11 21 X2 (L1) Black 4 14 24 X3 (L2) Black 2 12 22 X4 (L2) Black 5 15 25 X5 (L3) Black 3 13 23 X6 (L3) Black 6 16 26 X1 (+) Black 1 11 21 X2 (+) Black 4 14 24 X3 Black - - - X4 Black - - - X5(-) Black 3 13 23 X6 (-) Black 6 16 26 Base point Gray 11 21 31 NC contact Gray 12 22 32 NO contact Gray 14 24 34 Base point Gray 41 51 61 NC contact Gray 42 52 62 NO contact Gray 44 54 64 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring Principle of the EFM 25 The electronic fuse monitoring device EFM 25 is supplied via the two poles L+ and L- of the DC system. It works according to the closed-circuit principle (default setting): The signaling relay is normally energized (no fault). The electronic fuse monitoring device measures the voltages upstream and downstream of the two fuses. If the voltage drop at one of the fuses exceeds 20 V 10%, the following operating states occur: The electronic fuse monitoring device trips The signaling relay drops out The corresponding signal is indicated on the display. If line monitoring is active, the following signals may also be output: "Undervoltage" line function active "Overvoltage" line function active The illuminated display indicates that power is being supplied to the electronic fuse monitoring device. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 23 Functions 3.2 Electronic fuse monitoring Circuit diagram of the EFM 25 for voltages up to 440 V DC / / 'LVSOD\ ) 0LFUR FRQWUROOHU ) 5HOD\ 5HOD\ Figure 3-5 3NJ62 size LV HRC 00, internal wiring with EFM 25 WARNING The display is not illuminated if the electronic fuse monitoring device is connected in a way other than that described above when the infeed is live and more than one fuse is faulty! In this case, the EFM's internal power supply can no longer be guaranteed! WARNING If the EFM is built into the 3NJ62 and not all lines of the changeover contact are wired to the multi-function plug, the exposed cable ends must be electrically insulated. Short-circuit protection of the EFM 25: Max. protection: "DIAZED 2 A gLgG" fuse 24 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring Operation of the EFM 20 and EFM 25 To activate SETUP or RUN mode, press the "Enter" key for longer than 2 seconds. The memory function is activated by means of the setup functions. 2 pushbutton units for setting values 1 "Enter" pushbutton unit for selecting the mode and "branching" within the menu ENTER WARNING The fuse or the line is not monitored in SETUP mode. Monitoring is only assured in RUN mode. If line monitoring is active, the voltage limits are monitored. If one of the voltages exceeds or falls below the limit, relay 2 drops out providing closed-circuit principle is selected (see below). The symbol for undervoltage or overvoltage appears on the display. If a fault occurs, the relays respond according to the selected operating principle after the set error delay time (Del): 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 25 Functions 3.2 Electronic fuse monitoring Symbol Closed-circuit principle Working-current principle 1& 12 0HP QROLQHPRQLWRULQJDFWLYH Lx 8[\ 8[\ 5HOD\ 5HOD\ 5HOD\ 5HOD\ 'HO 'HO /// Lx // /// /// 5HOD\ 5HOD\ 5HOD\ 5HOD\ // 'HO 'HO 8[\ Ux -y 8 +\VW 8 8[\ 5HOD\ 5HOD\ 5HOD\ 5HOD\ 'HO Ux-y +\VW 'HO 8[\ /// !8 +\VW !8 8[\ 5HOD\ 5HOD\ 5HOD\ 5HOD\ 'HO +\VW 'HO RSHQ FORVHG Figure 3-6 26 Closed-circuit / open-circuit principle, EFM 20 (AC) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring Symbol Closed-circuit principle Working-current principle 1& 12 0HP QROLQHPRQLWRULQJDFWLYH L+ 8 8 5HOD\ 5HOD\ 5HOD\ 5HOD\ 'HO 'HO 8 8 U= +\VW 8 5HOD\ 5HOD\ 5HOD\ 5HOD\ 'HO 8 'HO !8 8 U= +\VW +\VW 8 5HOD\ 5HOD\ 5HOD\ 5HOD\ 'HO !8 +\VW 'HO RSHQ FORVHG Figure 3-7 Closed-circuit / open-circuit principle, EFM 25 (DC) You acknowledge an alarm by simultaneously pressing the Up and Down keys (only if the memory function is active). NOTICE All alarms should be acknowledged, even if they are no longer present! If several alarms are present, only the alarm with the highest priority is actually displayed. An alarm for a faulty fuse takes priority over all others (refer to the alarm priorities below). 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 27 Functions 3.2 Electronic fuse monitoring Menu structure on the display of the EFM 20 (AC) Legend: RUN: Operating mode WARNING The fuse or the line is not monitored in SETUP mode. Monitoring is only assured in RUN mode. U1-2, U2-3, U3-1: phase-to-phase voltages Value: Value range (195 V to 790 V) TEST 1, TEST 2: Test on relay 1, test on relay 2 SET?: Setup mode Hyst: Hysteresis (fluctuation range) in V (1 V - 20 V, default setting: 5 V) Del: Delay time after which a fault is indicated (0.1 to 20 s), e.g. in a system with large voltage fluctuations or if the motor that is used draws a very high current on starting Mem?: Save yes / no NC: Normally closed - closed-circuit principle, i.e. the relay is energized (default setting) NO: Normally Open: open-circuit principle 1 Func 2? : Contactor 2 responds like contactor 1 2? : Contactor 2 responds to overvoltage/undervoltage/phase failure Error: Fault indication RES?: Reset fault indication Memory?: Save fault indication yes / no L1 : Voltage at the fuses: Lower threshold value undershot U1-2 : Phase-to-phase voltage: Lower threshold value undershot U1-2 : Phase-to-phase voltage: Upper threshold value exceeded L1 28 : Phase failure L1 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 29 Functions 3.2 Electronic fuse monitoring 1) On 11 41 Del 12 14 42 44 Off 2) Upper limit exceeded: No limit violation: Lower limit undershot: 3) Functions or indication are only active if line monitoring is activated 4) If the memory function is active, the fault indication alternates with the following symbol: 1) 30 2) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring Menu structure on the display of the EFM 25 (DC) Legend: RUN: Operating mode WARNING The fuse or the line is not monitored in SETUP mode. Monitoring is only assured in RUN mode. U =: Line-to-line voltage Value: Value range (190 V to 510 V) TEST 1, TEST 2: Test on relay 1, test on relay 2 SET?: Setup mode Hyst: Hysteresis (fluctuation range) in V (1 V - 20 V, default setting: 5 V) Del: Delay time after which a fault is indicated (0.1 to 20 s) Mem?: Save yes / no NC: Normally closed - closed-circuit principle, i.e. the relay is energized (default setting) NO: Normally Open: open-circuit principle 1 Func 2? : Contactor 2 responds like contactor 1 2? : Contactor 2 responds to overvoltage/undervoltage/phase failure Error: Fault indication RES?: Reset fault indication Memory?: Save fault indication yes / no L+ , L- : Voltage at the fuse: Lower threshold value undershot U= : Line-to-line voltage: Lower threshold value undershot U= :Line-to-line voltage: Upper threshold value exceeded 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 31 Functions 3.2 Electronic fuse monitoring 32 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring 1) On 11 41 Del 12 14 42 44 Off 2) Upper limit exceeded: No limit violation: Lower limit undershot: 3) Functions or indication are only active if line monitoring is activated 4) If the memory function is active, the fault indication alternates with the following symbol: 1) 2) Alarm priorities on the EFM 20-25 Priority Alarm Function type Remarks 1 Phase failure Line monitoring AC version only. The fault (phase or fuse failure) that was detected first in the monitoring sequence from L1 to L2 to L3 is indicated. 2 Fuse faulty Fuse monitoring device DC version: A faulty fuse can only be detected if a load is connected. 3 Overvoltage Line monitoring -- 4 Overvoltage Line monitoring -- If several alarms are present, only the alarm with the highest priority is actually displayed. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 33 Functions 3.2 Electronic fuse monitoring Voltage tap for the internal power supply and direction of the incoming supply on all EFMs, taking the EFM 10 as an example The EFM electronics are supplied via the phases (L1, L2, L3 or L+, L-) of the main circuit. The voltage for the internal power supply is always tapped at the fuse holders on the side of the rear plug-in contacts. Owing to the internal power supply, the electronics are only fully functional if the 3NJ62 is switched on and at least two phases on the input side are supplied with power. Infeed Outgoing feeder WARNING The green LED on the EFM 10 does not light up, and the display of the EFM 20 or the EFM 25 is not illuminated, if the electronic fuse monitoring device is connected in a way other than that described above when the infeed is live and more than one fuse is faulty! In this case, the EFM's internal power supply can no longer be guaranteed! 34 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.2 Electronic fuse monitoring WARNING If the green LED does not light up or the display is not illuminated when the infeed is live and the EFM is correctly connected, the EFM must be immediately replaced! The table below shows: The number of tripped fuses Whether or not the electronics are active The "Fault" signal as a function of the voltage tap (infeed side, outgoing side). Table 3- 1 Number of tripped fuses, electronics active or not active and fault signal as a function of the voltage tap (infeed side, outgoing side) on the EFM 10/20 Number of tripped fuses AC DC Electronics active Fault signal AC DC AC DC Voltage tap for electronics = infeed side of the main conducting paths. Infeed correct: see pictures above 0 0 Yes Yes No No 1 1 Yes Yes Yes Yes Voltage tap for electronics = outgoing side of the main conducting paths 1) 2) 2 2 Yes Yes Yes Yes 3 -- Yes -- Yes -- 0 0 Yes Yes No No 1 1 Yes No Yes Relay returns to the deenergized state (closedcircuit principle) 2 2 No No Relay returns to the deenergized state (closed-circuit principle) 3 -- No -- Relay returns to the deenergized state 1) AC EFM 10/20 2) DC EFM 25 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 35 Functions 3.3 Motorized operation 3.3 Motorized operation Motorized operation features The motor is installed in the factory. The motor is completely installed in the in-line disconnector without changing its dimensions. The operating buttons are protected by a transparent cover and can also be padlocked (padlock O: 6 mm) Emergency stop function if the motor voltage fails by operating with a size 3 Allen key Local or remote operation External connection by means of the 18-pole multi-function plug fitted in the factory Ma Figure 3-8 36 nu al op era tio n Motorized operation 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Functions 3.4 Connection method 3.4 Connection method All plug-in switch disconnectors are supplied for connection with a cable lug as standard. Terminals are also available as optional accessories. 3.5 Current transformers and current transformer busbars Current transformers Size Primary current Secondary current Accuracy class Feed-through opening Size 00 50 A 1 A, 5 A Class 1 21 mm 100 A, 150 A 1 A, 5 A Class 1, class 0.5 21 mm Class 0.5, calibrated 14 mm 50 A 1 A, 5 A Class 1 21 mm 100 A, 150 A, 200 A, 250 A 1 A, 5 A Class 1, class 0.5 300 A, 400 A, 500 A, 600 A 1 A, 5 A Class 1, class 0.5 Class 0.5, calibrated Size 1 Size 2 / size 3 32 mm Current transformers are not allowed to be operated at no load because this could lead to hazardous voltages at the terminals. If four current transformers are used, the fourth transformer is in phase L3 for size 00, phase L2 for size 1, or phase L1 for sizes 2 and 3. If the fourth current transformer has size 00 or 1, the multi-function plug cannot be fitted because there is not enough space. A current transformer cannot be installed in the N conductor of 4-pole devices. Current transformer busbars Size Order no. of current transformer busbars for 1 current transformer 3 current transformers 4 current transformers Current transformer with 21 mm 3NJ69 20-3DB00 3NJ69 20-3DC00 3NJ69 20-3DD00 Current transformer with 14 mm 3NJ69 20-3DE00 3NJ69 20-3DF00 3NJ69 20-3DG00 Current transformer with 21 mm 3NJ69 30-3DB00 3NJ69 30-3DC00 3NJ69 30-3DD00 Size 2 / size 3 No current transformer busbars required Size 00 Size 1 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 37 Functions 3.6 Ammeters 3.6 Ammeters According to DIN 43718, an ammeter with dimensions 48 mm x 48 mm can be used to measure the current. It can be a moving-iron measuring instrument or a bi-metal measuring instrument. A holder for ammeters can be ordered as a separate accessory. Holder for ammeters Ammeter: moving-iron measuring instrument (left) and bi-metal measuring instrument (right) In the case of device versions with electronic fuse monitoring (EFM), the holder for ammeters is installed in the factory. 38 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.1 4 Mounting size 00 Installing the plates for device versions with a motorized operating mechanism in the control cabinet 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 39 Mounting 4.1 Mounting size 00 Installing device versions with a motorized operating mechanism in the control cabinet Installation in the control cabinet PP 40 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.1 Mounting size 00 Removing the EFM Installing / removing the EFM in / from the control cabinet PP 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 41 Mounting 4.1 Mounting size 00 Emergency mode Installing 4-pole device versions with a motorized operating mechanism in the control cabinet 42 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.1 Mounting size 00 Overview Note The multi-function plug and the electronic fuse monitor (EFM) must be dismantled in order to install accessories. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 43 Mounting 4.1 Mounting size 00 Installing the current transformer and the multi-function plug WARNING The current transformers must not be operated with an open circuit. 44 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.1 Mounting size 00 Wiring of the auxiliary switches O Figure 4-1 Cable lengths ,6HHWDEOH (QGVOHHYHV sPP PP 6WULSSHG Size 00 )RULQVFULSWLRQV VHHWDEOH Color: Black Version Inscription I [mm] PP 6WULSSHG +9.PP Current transformer L1K 250 1 L1L 2 L2K 250 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 200 3 L2L 210 4 Auxiliary switch L3K 180 5 L3L 190 6 -1 11 310 -2 12 410 -3 13 450 -2 14 290 45 Mounting 4.2 Mounting size 1 4.2 Mounting size 1 Installing the plates for device versions with a motorized operating mechanism in the control cabinet 46 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.2 Mounting size 1 Installing device versions with a motorized operating mechanism in the control cabinet Installation in the control cabinet PP 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 47 Mounting 4.2 Mounting size 1 Removing the EFM Installing / removing the EFM in / from the control cabinet PP 48 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.2 Mounting size 1 Emergency mode Installing 4-pole device versions with a motorized operating mechanism in the control cabinet 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 49 Mounting 4.2 Mounting size 1 Overview Note The multi-function plug and the electronic fuse monitor (EFM) must be dismantled in order to install accessories. 50 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.2 Mounting size 1 Installing the current transformer and the multi-function plug WARNING The current transformers must not be operated with an open circuit. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 51 Mounting 4.2 Mounting size 1 Wiring of the auxiliary switches O Figure 4-2 Cable lengths ,6HHWDEOH (QGVOHHYHV sPP PP 6WULSSHG Size 1 )RULQVFULSWLRQV VHHWDEOH Color: Brown Version Inscription I [mm] 52 PP 6WULSSHG +9.PP Current transformer L1K 290 1 L1L 300 2 L2K 170 3 L2L 170 4 Auxiliary switch L3K 220 5 L3L 240 6 -1 11 450 -2 12 450 -3 13 460 -2 14 500 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.3 Mounting sizes 2 and 3 4.3 Mounting sizes 2 and 3 Installing the plates for device versions with a motorized operating mechanism in the control cabinet 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 53 Mounting 4.3 Mounting sizes 2 and 3 Installing device versions with a motorized operating mechanism in the control cabinet Installation in the control cabinet PP 54 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.3 Mounting sizes 2 and 3 Removing the EFM Installing / removing the EFM in / from the control cabinet PP 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 55 Mounting 4.3 Mounting sizes 2 and 3 Emergency mode Installing 4-pole device versions with a motorized operating mechanism in the control cabinet 56 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.3 Mounting sizes 2 and 3 Overview Note The multi-function plug and the electronic fuse monitor (EFM) must be dismantled in order to install accessories. 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 57 Mounting 4.3 Mounting sizes 2 and 3 Installing the current transformer and the multi-function plug WARNING The current transformers must not be operated with an open circuit. 58 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Mounting 4.3 Mounting sizes 2 and 3 Wiring of the auxiliary switches O Figure 4-3 Cable lengths ,6HHWDEOH (QGVOHHYHV sPP PP 6WULSSHG Size 2 / size 3 )RULQVFULSWLRQV VHHWDEOH Color: Blue Version Inscription I [mm] PP 6WULSSHG +9.PP Current transformer L1K 760 1 L1L 2 L2K 790 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 670 3 L2L 670 4 Auxiliary switch L3K 560 5 L3L 570 6 -1 11 300 -2 12 300 -3 13 300 -2 14 300 59 Mounting 4.3 Mounting sizes 2 and 3 60 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 5 Configuration 5.1 Installation data 3NJ62 switch disconnectors Type of LV HRC version Type of BS version Rated current [A] Size Height requirements of inline disconnectors [mm] 3NJ6202 3NJ6262 160 00 50 3NJ6212 3NJ6272 250 1 100 3NJ6222 3NJ6282 400 2 200 3NJ6232 3NJ6292 630 3 200 3NJ6243 63 00 50 3NJ6253 100 00 50 3NJ6203 3NJ6263 160 00 50 3NJ6213 3NJ6273 250 1 100 3NJ6223 3NJ6283 400 2 200 3NJ6233 3NJ6293 630 3 200 3NJ6204 3NJ6264 160 00 100 3NJ6214 3NJ6274 250 1 150 3NJ6224 3NJ6284 400 2 250 3NJ6234 3NJ6294 630 3 250 Further built-in components Type Designation Height requirements [mm] 3NJ69 00-4CB00 Blanking covers for empty compartments / connection module 50 3NJ69 15-3BA00 Connection module 400 A for device compartment (without 50 front panel) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 61 Configuration 5.2 Rated currents 5.2 Rated currents Rated currents of device sizes = 0.8 x IN of the biggest fuse link For summation current of all feeders in the SIVACON cubicle: Rated current 2000 A Device size Fuse IN [A] Rated current = 0.8 x IN [A] 00 160 125 125 100 80 64 250 200 224 180 125 100 400 320 355 284 315 252 630 504 500 400 400 320 1 2 3 62 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Configuration 5.3 Configuration rules 5.3 Configuration rules Configuration rules for ventilated SIVACON cubicles with 3NJ62 switch disconnectors with fuses Equipment in the cubicle, from top to bottom, decreasing from size 3 to size 00 Recommended maximum configuration per cubicle: approx. 2/3, including reserve Disconnectors of size 2 and 3 should - where possible - be distributed between different cubicles Summation current of all feeders in the cubicle: max. 2000 A Rated currents of device sizes = 0.8 x IN of the biggest fuse link Rated currents of smaller fuse links of one size = 0.8 x IN of the fuse link For the fully equipped cubicle, the rated diversity factor according to IEC 60439-1 applies. Failure to comply with these instructions may lead to premature ageing of fuses and uncontrolled tripping as a result of local overheating. All data refers to an ambient temperature of the switchgear of 35C (24-hour average value). Rated diversity factor according to IEC 60439-1 Number of main circuits Rated diversity factor 2 and 3 0.9 4 and 5 0.8 6 to 9 0.7 10 or more 0.6 Rated current of the fuse links Summation current of all feeders in the cubicle 2000 A = 0.8 x IN of fuse 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 63 Configuration 5.3 Configuration rules Blanking covers In-line disconnector size Permissible current (continuous load current at 35C system ambient temperature) Total covered height to be allocated (for recommended arrangement of blanking covers, see right) In-line disconnector size 3 (group formation not permissible) 440 A to 500 A of single device 200 mm = 4 units per in-line disconnector In-line disconnector size 2 (group formation not permissible) < 440 A of single device 150 mm = 3 units per in-line disconnector 320 A of single device 50 mm = 1 unit per in-line disconnector 64 A of single device 100 mm = 2 units per group In combination with size 2 and 3 in one cubicle, the rated currents are 280 A for size 2 and 440 A for size 3. Devices of sizes 2 and 3 must be allocated blanking covers (see above). 64 In x 0.8 = 500 A = permissible continuous load current , 1 $ Groups of in-line 400 A = 100 mm = 2 units per group disconnectors, sizes 00 summation current and 1 of fuse links group x 0.8 Any sized groups of inline disconnectors of size 00 Arrangement of in-line disconnectors + associated blanking covers (blanking covers with ventilation slots, 50 mm high) In x 0.8 = 400 A = permissible continuous load current HJ,1 $ In x 0.8 = 284 A = permissible continuous load current HJ,1 $ , 1 , 1 , 1 , 1 Total In x 0.8 400 A = permissible continuous load current $ $ $ $ , 1 $ , 1 $ Q Q , 1 $ , 1 $ (Total 1 to In) x = permissible continuous load current = Rated diversity factor 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 6 Technical specifications Standards EN/IEC 60947-3 Size Type Size 00 LV HR C BS Switching capacity 3NJ6202-3 3NJ6202-4 3NJ6243-3 3NJ6253-3 H 3NJ6262-3 3NJ6262-4 H S V 1000 Rated impulse voltage Uimp V 8000 Rated operational current Ie for fuse links according to IEC 60269 / BS 88 Rated operational voltage Ue at 50 / 60 Hz rated frequency with DC H - - 00 and 000 A3 A3 00T* A 63 100 160 V 690 690 230 440 AC23B AC23B DC23B DC21B For BS fuse links according to BS 88 * = fuse links from Lawson Fuses based on BS 88 Utilization category 3NJ6203-3 3NJ6203-4 3NJ6263-3 3NJ6263-4 H Rated insulation voltage Ui For LV HRC fuse links according to IEC 60269 3NJ6203-1 3NJ6204-1 3NJ6204-2 160 125 160 125 500 690 500 690 AC22B AC23B 100 55 100 66 Rated conditional short-circuit current Short-circuit strength (rms value) Short-circuit making capacity (rms value) kA kA 100 66 100 66 Rated making capacity cos = 0.65 cos = 0.45 cos = 0.35 A A A 630 - 1000 - - - 480 - 375 - 1600 1250 Rated breaking capacity cos = 0.65 cos = 0.45 cos = 0.35 A A A 504 - 800 - - - 480 - 375 - 1280 1000 2000 300 2000 300 7 17 Endurance Operating cycles, total Operating cycles, electrical (690 V, cos = 0.65) Power loss (without fuse links) W Permissible ambient temperature C Permissible mounting positions Degree of protection (in operating state) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 60 60 1600 200 43 - 5 ... + 55 Horizontal or vertical with bottom connection IP41 65 Technical specifications Standards EN/IEC 60947-3 Size Type Size 00 LV HR C BS 3NJ6202-3 3NJ6202-4 3NJ6243-3 3NJ6253-3 3NJ6262-3 3NJ6262-4 3NJ6203-1 3NJ6204-1 3NJ6204-2 3NJ6203-3 3NJ6203-4 3NJ6263-3 3NJ6263-4 Main circuit connection Cable lug connection, conductor crosssection (Al/Cu, solid or stranded) according to DIN 46235 (Cu) and DIN 46239 (Al) mm2 mm2 Screw size 1x 10-95 2x 16-70 M8 Torque Nm 15 Cable clamp connection, conductor cross-section Al/Cu), rm (Al/Cu), re (Al/Cu), sm (Al/Cu), se mm2 mm2 mm2 mm2 1x 10-50 1x 10-50 1x 16-95 1x 16-95 Torque Nm 15 66 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Technical specifications Standards EN/IEC 60947-3 Size Type Size 1 LV HR C 3NJ6212-3 3NJ6212-4 3NJ6213-1 3NJ6214-1 3NJ6214-2 3NJ6213-3 3NJ6213-4 BS 3NJ6272-3 3NJ6272-4 3NJ6274-1 3NJ6274-2 3NJ6273-3 3NJ6273-4 H S H Switching capacity Rated insulation voltage Ui V 1000 Rated impulse voltage Uimp V 8000 For LV HRC fuse links according to IEC 60269 1 For BS fuse links according to BS 88 * = fuse links from Lawson Fuses based on BS 88 B2 Rated operational current Ie for fuse links according to IEC 60269 / BS 88 A Rated operational voltage Ue at 50 / 60 Hz rated frequency V for DC Utilization category 250 250 250 230 440 690 690 DC23B DC21B AC22B AC23B 100 55 100 66 Rated conditional short-circuit current Short-circuit strength (rms value) Short-circuit making capacity (rms value) kA kA Rated making capacity cos = 0.65 cos = 0.45 cos = 0.35 A A A - - 750 - 2500 Rated breaking capacity cos = 0.65 cos = 0.45 cos = 0.35 A A A - - 750 - 2000 Endurance Operating cycles, total Operating cycles, electrical (690 V, cos = 0.65) 60 60 1600 200 Power loss (without fuse links) W 78 Permissible ambient temperature C - 5 ... + 55 Permissible mounting positions Degree of protection (in operating state) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Horizontal or vertical with bottom connection IP41 67 Technical specifications Standards EN/IEC 60947-3 Size Type Size 1 LV HR C BS Cable lug connection, conductor crosssection mm2 mm2 (Al/Cu, solid or stranded) according to DIN 46235 (Cu) and DIN 46239 (Al) Screw size 3NJ6212-3 3NJ6212-4 3NJ6272-3 3NJ6272-4 Main circuit connection 3NJ6213-1 3NJ6214-1 3NJ6214-2 3NJ6213-3 3NJ6213-4 3NJ6274-1 3NJ6274-2 3NJ6273-3 3NJ6273-4 1x 25-240 2x 25-70 M12 Torque Nm 30 Cable clamp connection, conductor cross-section Al/Cu), rm (Al/Cu), re (Al/Cu), sm (Al/Cu), se mm2 mm2 mm2 mm2 1x 16-185 1x 16-150 1x 35-240 1x 35-300 Torque Nm 25 68 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Technical specifications Standards EN/IEC 60947-3 Size Type Size 2 LV HR C 3NJ6222-3 3NJ6222-4 BS 3NJ6282-3 3NJ6282-4 Switching capacity 3NJ6223-1 3NJ6224-1 3NJ6224-2 3NJ6283-3 3NJ6283-4 H S Rated insulation voltage Ui V 1000 Rated impulse voltage Uimp V 8000 For LV HRC fuse links according to IEC 60269 Rated operational voltage Ue at 50 / 60 Hz rated frequency with DC H 2 and 1 For BS fuse links according to BS 88 * = fuse links from Lawson Fuses based on BS 88 Rated operational current Ie for fuse links according to IEC 60269 / BS 88 3NJ6223-3 3NJ6223-4 B4 A V Utilization category 400 400 400 - - 690 690 230 440 AC22B AC23B Rated conditional short-circuit current Short-circuit strength (rms value) Short-circuit making capacity (rms value) kA kA 60 60 100 55 100 66 Rated making capacity cos = 0.65 cos = 0.45 cos = 0.35 A A A - 1200 - 4000 Rated breaking capacity cos = 0.65 cos = 0.45 cos = 0.35 A A A - 1200 - 3200 Endurance Operating cycles, total Operating cycles, electrical (690 V, cos = 0.65) 1000 200 Power loss (without fuse links) W Permissible ambient temperature C Permissible mounting positions Degree of protection (in operating state) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 158 - 5 ... + 55 Horizontal or vertical with bottom connection IP41 69 Technical specifications Standards EN/IEC 60947-3 Size Type Size 2 LV HR C BS Cable lug connection, conductor crosssection mm2 mm2 (Al/Cu, solid or stranded) according to DIN 46235 (Cu) and DIN 46239 (Al) Screw size 3NJ6222-3 3NJ6222-4 3NJ6223-1 3NJ6224-1 3NJ6224-2 3NJ6282-3 3NJ6282-4 Main circuit connection 3NJ6283-3 3NJ6283-4 1x 25-300 2x 25-240 2 x M12 Torque Nm 30 Cable clamp connection, conductor cross-section Al/Cu), rm (Al/Cu), re (Al/Cu), sm (Al/Cu), se mm2 mm2 mm2 mm2 2x 16-185 2x 16-150 2x 35-240 2x 35-300 Torque Nm 25 70 3NJ6223-3 3NJ6223-4 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Technical specifications Standards EN/IEC 60947-3 Size Type Size 3 LV HR C 3NJ6232-3 3NJ6232-4 BS 3NJ6292-3 3NJ6292-4 Switching capacity 3NJ6233-1 3NJ6234-1 3NJ6234-2 3NJ6233-3 3NJ6233-4 3NJ6293-3 3NJ6293-4 H S Rated insulation voltage Ui V 1000 Rated impulse voltage Uimp V 8000 For LV HRC fuse links according to IEC 60269 H 3 and 2 For BS fuse links according to BS 88 * = fuse links from Lawson Fuses based on BS 88 3T* Rated operational current Ie for fuse links according to IEC 60269 / BS 88 A Rated operational voltage Ue at 50 / 60 Hz rated frequency V Utilization category 630 630 630 230 440 500 DC23B DC21B 500 630 690 500 500 690 AC22B AC23B 100 55 100 66 Rated conditional short-circuit current Short-circuit strength (rms value) Short-circuit making capacity (rms value) kA kA Rated making capacity cos = 0.65 cos = 0.45 cos = 0.35 A A A - - 1890 - 1500 - 6300 5000 Rated breaking capacity cos = 0.65 cos = 0.45 cos = 0.35 A A A - - 1890 - 1500 - 5040 4000 Endurance Operating cycles, total Operating cycles, electrical (690 V, cos = 0.65) 60 60 1000 200 Power loss (without fuse links) W 357 Permissible ambient temperature C - 5 ... + 55 Permissible mounting positions Degree of protection (in operating state) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Horizontal or vertical with bottom connection IP41 71 Technical specifications Standards EN/IEC 60947-3 Size Type Size 3 LV HR C BS Cable lug connection, conductor cross-section (Al/Cu, solid or stranded) according to DIN 46235 (Cu) and DIN 46239 (Al) mm2 mm2 Screw size 3NJ6232-3 3NJ6232-4 3NJ6233-1 3NJ6234-1 3NJ6234-2 3NJ6292-3 3NJ6292-4 Main circuit connection 3NJ6293-3 3NJ6293-4 1x 25-300 2x 25-240 2 x M12 Torque Nm 30 Cable clamp connection, conductor cross-section Al/Cu), rm (Al/Cu), re (Al/Cu), sm (Al/Cu), se mm2 mm2 mm2 mm2 2x 16-185 2x 16-150 2x 35-240 2x 35-300 Torque Nm 25 72 3NJ6233-3 3NJ6233-4 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Technical specifications Auxiliary switches according to IEC 60947-5-1 Rated insulation voltage Ui V 690 Rated impulse voltage Uimp V 8000 Rated operational current Ie at AC 15, Ue = 120 V at AC 15, Ue = 230 V at AC 15, Ue = 400 V at AC 15, Ue = 690 V A A A A 8 6 4 2 Electronic fuse monitoring device (EFM 10) Apparent power consumption VA S approx. 2.5 s MOhm Rin > 6 Bearing temperature C - 20 ... + 80 Operating temperature C - 5 ... + 55 Operating temperature (from 500 V or 500 A) C - 5 ... + 35 Internal resistance of the measurement circuit Degree of protection in closed disconnector IP40 Rated operational voltage of the main switching devices 230 ... 690 V AC, 50 / 60 Hz Voltage limits % 15 Signaling relay in accordance with IEC 60947-5-1 A Ith = 1.5 kV Uimp = 4 V Ui = 250 Loadability of the signaling relay 24 125 240 A 1 0,2 0,1 A 1,5 1,5 1,5 Ue V DC - 13; Ie AC - 15; Ie Short-circuit protection 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 max. fuse Diazed 2 A gLgG 73 Technical specifications Electronic fuse monitoring device AC version (EFM 20) Apparent power consumption VA S approx. 2.5 s MOhm Rin > 6 Bearing temperature C - 20 ... + 80 Operating temperature C - 5 ... + 55 Operating temperature (from 500 V or 500 A) C - 5 ... + 35 Internal resistance of the measurement circuit Degree of protection in closed disconnector IP40 Rated operational voltage of the main switching devices 230 ... 690 V AC, 50 / 60 Hz Voltage limits % 15 Undervoltage V 375 Overvoltage V 425 Voltage drop for faulty fuses V > 13 Delay time s 0,1 Relay 2 as relay 1 (fuse monitoring) Memory function off Open-circuit / closed-circuit Closed-circuit Mode RUN mode Menu option Signaling relay in accordance with IEC 60947-5-1 Show voltage values / alarms A Ith = 1.5 kV Uimp = 4 V Ui = 250 Signaling relay 1 1 changeover contact for fuse monitoring only Signaling relay 2 1 changeover contact as general alarm output OR like signaling relay 1 (default setting) Loadability of the signaling relay 125 240 A 1 0,2 0,1 A 1,5 1,5 1,5 V DC - 13; Ie AC - 15; Ie Short-circuit protection 74 24 Ue max. fuse Diazed 2 A gLgG 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Technical specifications Electronic fuse monitoring device DC version (EFM 25) Apparent power consumption VA S approx. 2.5 s MOhm Rin > 6 Bearing temperature C - 20 ... + 80 Operating temperature C - 5 ... + 55 Operating temperature (from 500 V or 500 A) C - 5 ... + 35 Internal resistance of the measurement circuit Degree of protection in closed disconnector IP40 Rated operational voltage of the main switching devices 220 ... 440 V DC Voltage limits % 15 Undervoltage V 200 Overvoltage V 240 Voltage drop for faulty fuses V > 20 Delay time s 0,1 Relay 2 as relay 1 (fuse monitoring) Memory function off Open-circuit / closed-circuit Closed-circuit Mode RUN mode Menu option Signaling relay in accordance with IEC 60947-5-1 Show voltage values / alarms A Ith = 1.5 kV Uimp = 4 V Ui = 250 Signaling relay 1 1 changeover contact for fuse monitoring only Signaling relay 2 1 changeover contact as general alarm output OR like signaling relay 1 (default setting) Loadability of the signaling relay 24 125 240 A 1 0,2 0,1 A 1,5 1,5 1,5 Ue V DC - 13; Ie AC - 15; Ie Short-circuit protection 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 max. fuse Diazed 2 A gLgG 75 Technical specifications Ammeters Input x /1 A or x /5 A Overload Moving-iron measuring instrument Bi-metal measuring instrument 1.2 times 2 times Min/max pointer Moving-iron measuring instrument Bi-metal measuring instrument min min 15 Intrinsic consumption Moving-iron measuring instrument Bi-metal measuring instrument VA VA 0,6 1 Motorized operating mechanism Size Size 00 Supply voltage V Current consumption A Endurance(without any constraints on the switch disconnectors according to IEC 609473) Operating cycles, total Operating cycles under load Signal duration 76 s Size 1 Size 2 / size 3 DC 24 2 1,1 1,3 2,8 1600 200 1600 200 1000 200 Min. 0.5 or permanent signal 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 7 Dimensional drawings 7.1 2-/3-pole switch disconnectors 16(B 3NJ62 switch disconnectors, manually operated 49 Figure 7-1 259 590 Size 00, with motorized operating mechanism Figure 7-2 Figure 7-3 16(B 16(BE Size 00 16(B 16(B 16(BE Size 1 Figure 7-5 Figure 7-4 *XLGH SLQ 3OXJLQ FRQWDFW 16(BE Sizes 2 and 3 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 77 Dimensional drawings 7.1 2-/3-pole switch disconnectors Clearance between phases / / Figure 7-6 Plug-in contacts 2-pole switch disconnectors / / / 16(B Figure 7-7 78 Plug-in contacts 3-pole switch disconnectors 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Dimensional drawings 7.2 4-pole switch disconnectors 4-pole switch disconnectors 99 7.2 44,4 590 Size 00, with motorized operating mechanism 99 Figure 7-8 259 44,4 Size 00 149 Figure 7-9 Size 1 249 Figure 7-10 44,4 590 Figure 7-11 364 Sizes 2 and 3 Clearance between phases / Figure 7-12 1 / / Plug-in verification 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 79 Dimensional drawings 7.3 Position of the phases, terminal bolts, and current transformers 7.3 Position of the phases, terminal bolts, and current transformers / / / / / / / / / / / / 16(B Figure 7-13 Size 00 / / / / / / / / / / / / 16(B Figure 7-14 Size 1 / / / / / / / / / / / / 16(B Figure 7-15 80 Size 2 / size 3 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Dimensional drawings 7.4 Current transformers 7.4 Current transformers 16(B Figure 7-16 Current transformers for 3NJ62 switch disconnectors, size 00 and size 1, with feedthrough opening 21 mm 30 45 NSE0_01965 65 27 64.5 14 24 30 Figure 7-17 44 Current transformers for 3NJ62 switch disconnectors, size 00, with feed-through opening 14 mm 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 81 Dimensional drawings 7.4 Current transformers 16(B Figure 7-18 82 Current transformers for 3NJ62 switch disconnectors, size 2 and size 3 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Dimensional drawings 7.5 Ammeters 7.5 Ammeters 16(B Figure 7-19 Moving-iron measuring instrument 16(B Figure 7-20 Bi-metal measuring instrument 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 83 Dimensional drawings 7.5 Ammeters 84 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 8 Schematics 8.1 Switching examples Switching examples / / / ) ) ) 7 . / $ 16(B Figure 8-1 Switching example with 1 current transformer wired to 1 ammeter, with 1 NO contact and 1 NC contact 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 85 Schematics 8.1 Switching examples / / / ) ) ) 7 . / 16(B Figure 8-2 Switching example with 1 current transformer wired to multi-function plug, with 1 NO contact and 1 NC contact / / / ) ) ) 7 . / . 7 / 7 . / 16(B Figure 8-3 86 Switching example with 3 current transformers wired to multi-function plug, with 1 NO contact and 1 NC contact 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Schematics 8.1 Switching examples / / / ) ) ) 7 . / $ 16(B Figure 8-4 Switching example with 1 current transformer wired to 1 ammeter and multi-function plug, with 1 NO contact and 1 NC contact / / / ) ) ) 7 . / $ . 7 / 7 . / 16(B Figure 8-5 Switching example with 3 current transformers wired to 1 ammeter and multi-function plug, with 1 NO contact and 1 NC contact 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 87 Schematics 8.1 Switching examples / / / $FWLYH )DXOW/ )DXOW/ )DXOW/ 5HOD\ ) ) ) . 7 / Figure 8-6 88 $ Switching example 3NJ62 manually operated, with 1 current transformer wired to 1 ammeter, with 1 NO contact and 1 NC contact, with electronic fuse monitoring device (EFM10) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Schematics 8.1 Switching examples / / / '&9 9 $FWLYH 0 )DXOW/ ) ) ) )DXOW/ )DXOW/ 5HOD\ , 2 2 , . 7 / . 7 / . 7 / Figure 8-7 $ Switching example 3NJ62 with motorized operating mechanism, with 3 current transformers wired to 1 ammeter and multi-function plug, with 1 NO contact and 1 NC contact, with electronic fuse monitoring device (EFM10) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 89 Schematics 8.1 Switching examples / / / 'LVSOD\ 5HOD\ ) ) ) 5HOD\ . 7 / Figure 8-8 90 $ Switching example 3NJ62 manually operated, with 1 current transformer wired to 1 ammeter, with 1 NO contact and 1 NC contact, with electronic fuse monitoring device (EFM20) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Schematics 8.1 Switching examples / / / '&9 9 'LVSOD\ 0 ) ) ) 5HOD\ 5HOD\ , 2 2 , . 7 / . 7 / . 7 / Figure 8-9 $ Switching example 3NJ62 with motorized operating mechanism, with 3 current transformers wired to 1 ammeter and multi-function plug, with 1 NO contact and 1 NC contact, with electronic fuse monitoring device (EFM20) 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 91 Schematics 8.2 Terminal connection diagram of the multi-function plugs 8.2 Terminal connection diagram of the multi-function plugs 8.2.1 Manually operated switch disconnectors Table 8- 1 8.2.2 Current transformer L1, k 1 11 Auxiliary switch, NC contact, 1 Current transformer L1, l 2 12 Auxiliary switch, NC contact, 2 Current transformer L2, k 3 13 Auxiliary switch, NO contact, 3 Current transformer L2, l 4 14 Auxiliary switch, NO contact, 4 Current transformer L3, k 5 15 EFM 10/20/25, relay 1, 11/21/31 Current transformer L3, l 6 16 EFM 10/20/25, relay 1, 14/24/34 7 17 EFM 10/20/25, relay 1, 12/22/32 8 18 EFM 20/25, relay 2, 41/51/61 19 EFM 20/25, relay 2, 44/54/64 20 EFM 20/25, relay 2, 42/52/62 Switch disconnectors with motorized operating mechanism Table 8- 2 92 Manually operated switch disconnectors Switch disconnectors with motorized operating mechanism Current transformer L1, k 1 11 Auxiliary switch, NC contact, 1 Current transformer L1, l 2 12 Auxiliary switch, NC contact, 2 Current transformer L2, k 3 13 Auxiliary switch, NO contact, 3 Current transformer L2, l 4 14 Auxiliary switch, NO contact, 4 Current transformer L3, k 5 15 "Open" section Current transformer L3, l 6 16 "Close" section Neutral 7 17 EFM 10/20/25, relay 1, 11/21/31 + 24 V DC 8 18 EFM 10/20/25, relay 1, 12/22/32 19 EFM 20/25, relay 2, 41/51/61 20 EFM 20/25, relay 2, 42/52/62 3NJ62 System Manual, 11/2009, 711 6114-02 DS 03 Support Download catalogs and information material: www.siemens.com/lowvoltage/infomaterial Newsletter - always up to date: www.siemens.com/lowvoltage/newsletter E-business in the Industry Mall: www.siemens.com/lowvoltage/mall Online-Support: www.siemens.com/lowvoltage/support Contact for all technical information: Technical Assistance www.siemens.com/lowvoltage/technical-support E-Mail: support.automation@siemens.com Siemens AG Industry Sector Buildings Technologies Division Postfach 10 09 53 93009 Regensburg GERMANY www.siemens.com/lowvoltage Subject to change without prior notice Order No.: 3ZX1012-0NJ62-1AC1 (c) Siemens AG 2008