New PL series - Technical Specifications
MODEL RANGE:
PL068 0 to 6V at 0 to 8A
PL155 0 to 15V at 0 to 5A
PL303 0 to 30V at 0 to 3A
PL601 0 to 60V at 0 to 1.5A
PL303QMD 2 x (0 to 30V at 0 to 3A), or 1 x (0 to 30V at 0 to 6A)
PL303QMT As PL303QMD plus 0 to 6V at 0 to 8A
PLH120* 0 to 120V at 0 to 750mA
PLH250* 0 to 250V at 0 to 360mA
* The PLH series are a higher voltage variant of the PL series whose specifications differ in
certain areas. They are covered in a separate brochure (PLH and PLH-P series).
OUTPUT SPECIFICATIONS
Voltage/Current Levels
PL068 0V to 6V/0.1mA to 8A (48W max.)
PL155 0V to 15V/0.1mA to 5A (75W max.)
PL303 0V to 30V/0.1mA to 3A (90W max.)
PL601 0V to 60V/0.1mA to 1·5A ( 90W max.)
PL303QMD Dual outputs of 0V to 30V/0.1mA to 3A
or single output of 0V to 30V/0.2mA to 6A (180W max.)
PL303QMT As per PL303QMD plus third output 0V to 6V/0.1mA to 8A (228W max.)
Note: Actual maxima for voltage and current are typically 1% greater than the figures given above.
Output Setting & Control
Voltage Setting: By coarse and fine controls.
Current Setting: By single logarithmic control.
Output Mode: Constant voltage or constant current with automatic cross-over.
CC indicator lit in constant current mode.
Output Switch: Electronic, non isolating. Preset voltage and current limit displayed
when Output is off. Output rise time no load <15ms.
View Settings: With the output On, the meters show actual voltage and current.
The preset levels can be viewed and adjusted at any time by pressing
the View Settings button.
V-Span *
(Voltage Span Control)
The voltage adjustment range can be controlled by digital setting of the end-stop values of
the coarse voltage control to any desired values. The range for Vmax is 0.1V to 15V/30V/60V
depending on model. The range for Vmin is 0 to (Vmax – 0.1V).
S-Lock
(Settings Lock)
Voltage and current settings can be locked by a single button press. Lock accuracy is equal to
the meter accuracy (see Meter Specification).
Output Performance
Ripple & Noise *: Normal mode voltage: <0·4mV rms and 2mV p-p
Normal mode current: <0·2mArms; <40uA on 500mA range.
Common mode current: <5uA rms
Load Regulation: Voltage - <0·01% + 2mV.
Current - typically 0·01% + 500µA.
Voltage specification applies for any load change, measured at the output terminals. When using
remote sense add 0.5mV per 0.1V drop in the +ve output lead (max. sense lead resistance 0.5 W).
Line Regulation: Voltage <0·01% + 2mV for 10% line change.
Current <0·01% + 250µA. for 10% line change.
Transient Response: <50µs to within 50mV of setting for a 90% load change.
Temp. Coefficient: Voltage: typically <(50ppm + 0·5mV)/°C
Current: typically <(100ppm + 1mA)/°C;
<(100ppm + 0.1mA)/°C on 500mA range.
Output Protection
Output Protection: Output will withstand forward voltages of up to 20V above rated
output voltage. Reverse protection by diode clamp for currents to 3A.
OVP and OCP Trips: Voltage or current measured to be in excess of 105% of the rated
maximum will cause the output to trip off.
Over-temperature: Output trips off for over-temperature.
Safety Interlocks: Operations that could cause an unexpected change in voltage or
current settings are interlocked with the output switch.
Output Connections
Output Terminals: Universal 4mm safety binding posts on 19mm (0·75”) spacing.
Terminals can accept fixed shroud 4mm plugs, standard 4mm plugs, fork terminals and bare wires.
Remote Sense
Sense Selection: Voltage sensing is selected as Local or Remote by front panel switch.
Sense Terminals: Sprung loaded screw-less terminals.
METER SPECIFICATIONS (except PL068)
Display Type: Dual 4-digit meters, 10mm (0·39”) LED.
Voltage Meter
Resolution: 10mV
Accuracy: ± (0·1% of reading + 10mV)
Current Meter *
Resolution: 1mA (0·1mA on 500mA range)
Accuracy: ± (0·3% + 3mA) to 3A; ± (0·5% + 3mA) to 6A;
± (0·3% + 0·3mA) on 500mA range
Meter Damping: Normally 20ms, switchable to 2 sec for averaging rapidly varying loads.
METER SPECIFICATIONS PL068
Display Type: Dual 4-digit meters, 10mm (0·39”) LED.
Voltage Meter
Resolution: 1mV
Accuracy: ± (0·1% of reading + 3mV)
Current Meter
Resolution: 1mA (0·1mA on 500mA range)
Accuracy: ± (0.3% + 3mA) to 8A,
± (0.3% + 0.3mA) on 800mA range
Meter Damping: Normally 20ms, switchable to 2 sec for averaging rapidly varying loads.
ADDITIONAL SPECIFICATIONS - QUAD-MODE DUAL (PL303QMD)
The PL303QMD has four modes of operation:
Independent Mode
Each output is fully independent and isolated. Operation is equivalent to two single output
power supplies.
Tracking Mode
The two outputs remains isolated, but the Slave voltage controls are disabled and the Slave
voltage is set equal to the Master voltage. This can be used to generate tracking bipolar
voltages, or tracking unipolar voltages relative to different grounds. When voltages greater
than 30V are required, the outputs can be wired in series to generate 0 to 60V using only the
Master voltage controls.
Track Accuracy: Slave voltage = ± (0·1% of Master voltage setting + 10mV)
Ratio (%) Tracking Mode
As Tracking, but the Slave voltage controls set an output voltage between 0% and 101%
of the Master voltage. Once the Slave voltage has been set, varying the Master voltage will
create the same percentage change in the Slave voltage setting.
Track Accuracy: % change in Slave voltage = % change of Master voltage ± 0.1% ± 10mV
Parallel Mode
In this mode, the Master operates as a single output power supply with double the current
capability (0.2mA to 6A). The Slave is disabled and its displays are turned off.
Both On / Both Off
Each output has an independent DC On/Off control, however, additional control buttons are
provided which turn both outputs on or off simultaneously. These buttons operate in all four
modes.
ADDITIONAL SPECIFICATIONS - QUAD-MODE TRIPLE (PL303QMT)
The PL303QMT has identical specifications and features to the PL303QMD plus:
Third Output
Full performance third output of 0 to 6V at 0 to 8A. Specifications as per PL068.
All On / All Off
The Both On / Both Off buttons of the PL303QMD are replaced by control buttons which turn
all three outputs on or off simultaneously.
GENERAL SPECIFICATIONS
Input
AC Input: 230V AC or 115V AC ± 10%, 50/60Hz. Installation Category II
Input Power: Single output models - 280VA max.; Dual output models - 560VA max.
Triple output models - 840VA max.
Temperature & Environmental
Operating Range: +5ºC to +40ºC, 20% to 80% RH
Storage Range: -40ºC to + 70ºC
Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.
Cooling: Intelligent variable-speed low noise fan assists convection.
Safety & EMC
Safety: Complies with EN61010-1
EMC: Complies with EN61326
Physical
Size: Single output models - 107mm x 131mm (¼ rack 3U) x 288mm,
Dual output model - 214mm x 131mm (½ rack 3U) x 288mm
Triple output model - 321mm x 131mm (¾ rack 3U) x 288mm
(sizes exclude feet, knobs and terminals).
Weight: Single output models - 4·5kg; Dual output - 8.5kg; Triple output - 13kg
OPTIONS
Rack Mount (RM450)
19 inch 4U rack mount suitable for up to four single power supplies, two dual power supplies,
or any mixture. Blanking plates are provided for unused positions. The 4U height provides
limited ventilation space above and below the power supplies.
Accuracy specifications apply for the temperature range 18°C to 28°C after 1 hour warm-up.
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the
right to alter specifications without prior notice.
New PL-P Series specifications (remote control models)
Additional specifications applying to the New PL-P Series are on the following page.