2014.02 industrial.panasonic.com/ac/e/ Panasonic Corporation 2014©
Automation Controls Catalog
–1– ASCTB196E 201402-T
ORDERING INFORMATION
TYPES
Standard packing: Carton: 50 pcs.; Case: 200 pcs.
Load for solar inverter,
Compact size,
1 Form A 22A/33A
power relays
LF-G RELAYS (ALFG)
Contact
arrangement
Nominal coil
voltage
Part No.
Contact Gap 1.5 mm .059 inch type Contact Gap 1.8 mm .071 inch type
Standard type High capacity type Standard type High capacity type
1 Form A
9V DC ALFG1PF09 ALFG2PF09 ALFG1PF091 ALFG2PF091
12V DC ALFG1PF12 ALFG2PF12 ALFG1PF121 ALFG2PF121
18V DC ALFG1PF18 ALFG2PF18 ALFG1PF181 ALFG2PF181
24V DC ALFG1PF24 ALFG2PF24 ALFG1PF241 ALFG2PF241
VDE
Protective construction: Flux-resistant
type
FEATURES
1. High capacity
High capacity control possible at 22A/
33A (High capacity type) 250V AC rating
in compact size (L: 15.7 × W: 30.1 ×
H: 23.3 mm L: .618 × W: 1.185 × H: .917
inch)
RoHS compliant
2. Contact gap: 1.5 mm .059 inch and
1.8 mm*** .071 inch
Compliant with European photovoltaic
standard (IEC62109* and VDE0126**).
* Safety standard of PV power inverter
**German safety standard of PV power inverter
***Due to addition of altitude stipulation (2,000 m
6,561.68 ft or more) to IEC62109.
EN61810-1 certified: 2.5 kV surge
breakdown voltage (between contacts)
3. High insulation resistance
Creepage distance between contact and
coil terminal: Min. 9.5 mm .354 inch
Clearance distance between contact and
coil terminal: Min. 6.5 mm .256 inch
Surge breakdown voltage: 6 kV
4. Coil holding voltage contributes to
saving energy of equipment
The coil holding voltage can be reduced
up to 35%V of the nominal coil voltage
(Ambient temperature: 20°C 68°F).
Power consumption at the lowest coil
holding voltage: 170 mW equivalent
*Coil holding voltage is the coil voltage
after 100 ms from the applied nominal
coil voltage.
*When the ambient temperature during
use is 85°C 185°F, make the coil holding
voltage between 45% and 80%V of the
nominal coil voltage.
5. Conforms to various safety
standards
UL/C-UL and VDE approved
TYPICAL APPLICATIONS
1. Photovoltaic power generation
systems (Solar inverter)
2. Uninterruptible Power Supplies
(UPS)
3. Home appliances
4. Office equipment
LF-G relay
ALFG P F
Terminal shape
P: PCB type
Nominal coil voltage (DC)
09: 9V, 12: 12V, 18: 18V, 24: 24V
Contact gap
Nil:
1:
1.5 mm .059 inch
1.8 mm .071 inch
Contact arrangement
1: 1 Form A Standard type
2: 1 Form A High capacity type
Coil insulation class
F: UL Class F
Note: Certified by UL/C-UL and VDE
Panasonic Corporation 2014©
Panasonic Corporation Automation Controls Business Division
industrial.panasonic.com/ac/e/
LF-G (ALFG)
–2– ASCTB196E 201402-T
RATING
1. Coil data
2. Specifications
Notes: *1. This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the
actual load.
*2. Wave is standard shock voltage of ±1.2×50µs according to JEC-212-1981
*3. In accordance with UL class-F
*4. Coil holding voltage is the coil voltage after 100 ms from the applied nominal coil voltage.
*5. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage
conditions in NOTES.
Nominal coil
voltage
Pick-up voltage
(at 20°C 68°F)
(Initial)
Drop-out voltage
(at 20°C 68°F)
(Initial)
Nominal operating
current
[±10%] (at 20°C 68°F)
Coil resistance
[±10%] (at 20°C 68°F)
Nominal operating
power
Max. applied voltage
(at 20°C 68°F)
9V DC
70%V or less of
nominal voltage
10%V or more of
nominal voltage
155mA 58Ω
1,400mW 120%V of
nominal voltage
12V DC 117mA 103Ω
18V DC 78mA 230Ω
24V DC 59mA 410Ω
Characteristics Item
Specifications
Standard type High capacity type
Contact Gap 1.5 mm .059 inch type
Contact Gap 1.8 mm .071 inch type Contact Gap 1.5 mm .059 inch type Contact Gap 1.8 mm .071 inch type
Contact
Arrangement 1 Form A
Contact resistance (Initial) Max. 100 mΩ (By voltage drop 6 V DC 1A)
Contact material AgSnO2 type
Rating
Nominal switching capacity 22A 250V AC 31A 250V AC 33A 250V AC
Max. switching power 5,500VA 7,750VA 8,250VA
Max. switching voltage 250V AC
Max. switching current 22A (AC) 31A (AC) 33A (AC)
Nominal operating power 1,400mW
Min. switching capacity
(Reference value)*1100mA 5V DC
Electrical
characteristics
Insulation resistance (Initial) Min. 1,000MΩ (at 500V DC) Measurement at same location as “Breakdown voltage” section.
Breakdown
voltage (Initial)
Between open
contacts 2,500 Vrms for 1 min. (Detection current: 10 mA)
Between contact
and coil 4,000 Vrms for 1 min. (Detection current: 10 mA)
Surge breakdown voltage*2
(Between contact and coil) (Initial) 6,000 V
Temperature rise*3 (coil)
Max. 95°C 203°F (By resistive
method, nominal coil voltage
applied to the coil; contact carrying
current: 22A, at 60°C 140°F)
Max. 70°C 158°F (By resistive
method, 80%V of nominal coil
voltage applied to the coil; contact
carrying current: 22A, at 85°C
185°F)
Max. 95°C 203°F (By resistive
method, nominal coil voltage
applied to the coil; contact carrying
current: 31A, at 60°C 140°F)
Max. 70°C 158°F (By resistive
method, 80%V of nominal coil
voltage applied to the coil; contact
carrying current: 31A, at 85°C
185°F)
Max. 95°C 203°F (By resistive
method, nominal coil voltage
applied to the coil; contact carrying
current: 33A, at 60°C 140°F)
Max. 70°C 158°F (By resistive
method, 80%V of nominal coil
voltage applied to the coil; contact
carrying current: 33A, at 85°C
185°F)
Coil holding voltage*4
35 to 120%V (contact carrying
current: 22A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 22A, at 85°C 185°F)
35 to 120%V (contact carrying
current: 31A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 31A, at 85°C 185°F)
35 to 120%V (contact carrying
current: 33A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 33A, at 85°C 185°F)
Operate time (at 20°C 68°F)Max. 20 ms (at nominal coil voltage excluding contact bounce time.)
Release time (at 20°C 68°F)Max. 10 ms (at nominal coil voltage excluding contact bounce time, without diode)
Mechanical
characteristics
Shock
resistance
Functional Min. 100 m/s2 (Half-wave pulse of sine wave: 11 ms; detection time: 10µs.)
Destructive Min. 1,000 m/s2 (Half-wave pulse of sine wave: 6 ms.)
Vibration
resistance
Functional 10 to 55 Hz at double amplitude of 1.5 mm (Detection time: 10µs.)
Destructive 10 to 55 Hz at double amplitude of 1.5 mm
Expected life
Mechanical Contact Gap 1.5 mm .059 inch type: Min. 106 (at 180 times/min.)
Contact Gap 1.8 mm .071 inch type: Min. 5×105 (at 180 times/min.)
Electrical
Resistive load 22A 250V AC, Min. 3×104
(at 20 times/min.) ——
Inductive load
Destructive: 22A 250V AC
(cos
φ
= 0.8),
Min. 3×104 (on:off = 0.1s:10s)
Over load: 35A 250V AC
(cos
φ
= 0.8),
Min. 50 (on:off = 0.1s:10s)
Destructive: 31A 250V AC
(cos
φ
= 0.8),
Min. 3×104 (on:off = 0.1s:10s)
Over load: 47A 250V AC
(cos
φ
= 0.8),
Min. 50 (on:off = 0.1s:10s)
Destructive: 33A 250V AC
(cos
φ
= 0.8),
Min. 3×104 (on:off = 0.1s:10s)
Over load: 50A 250V AC
(cos
φ
= 0.8),
Min. 50 (on:off = 0.1s:10s)
Conditions Conditions for operation, transport
and storage*5
Ambient temperature: –40°C to +60°C –40°F to +140°F (When nominal coil voltage applied)
–40°C to +85°C –40°F to +185°F (Coil holding voltage is when 45 to 80%V
of nominal coil voltage is applied.)
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Air pressure: 86 to 106 kPa
Unit weight Approx. 23 g .81 oz
Panasonic Corporation 2014©
Panasonic Corporation Automation Controls Business Division
industrial.panasonic.com/ac/e/
LF-G (ALFG)
–3– ASCTB196E 201402-T
REFERENCE DATA
1. Standard type (Contact Gap 1.5 mm .059 inch type) (Contact Gap 1.8 mm .071 inch type)
1. Coil temperature rise
Sample: ALFG1PF09, ALFG1PF091, 6 pcs.
Point measured: coil inside
Ambient temperature: 20°C 68°F, 60°C 140°F
Contact carrying current: 22A
2. Ambient temperature characteristics and coil
applied voltage
Coil applied voltage, %V
20°C
60°C140°F22A
60°C140°F0A
68°F22A
20°C68°F0A
1401201008060
100
80
60
40
20
Te mperature rise, °C
Coil applied voltage, %V
180
140
100
60
0
Ambient temperature, °C
Contact carrying
current: 22A
Pick-up voltage
Coil & contact
no carrying current
*Inside the coil temperature
155°C311°F(UL Class F)
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
set as 155°C311°F)
0
32 10
50 20
68 30
86 40
104 50
122 60
140 70
158 80
176 90
194
°F
3. Electrical life test
(22A 250V AC Resistive load)
Sample: ALFG1PF09, ALFG1PF091, 6 pcs.
Operation frequency: ON:OFF = 1.5s:1.5s
Ambient temperature: 85°C 185°F
Circuit:
Change of pick-up and drop-out voltage Change of contact resistance
Contact welding detection
and Mis-contacting
detection circuit
250V AC
9V DC
Pick-up and drop-out voltage, V
30
10
9
8
7
6
5
4
3
2
1
0
Max.
Min.
x
Max.
Min.
x
No. of operations, ×104
Pick-up voltage
Drop-out voltage
Contact resistance, mΩ
No. of operations, ×104
30
100
90
80
70
60
50
40
30
20
10
0
Max.
Min.
x
4. Electrical life test
(22A 250V AC cos
φ
= 0.8 Inductive load)
Sample: ALFG1PF09, ALFG1PF091, 6 pcs.
Operation frequency: ON:OFF = 0.1s:10s
Ambient temperature: 85°C 185°F
Circuit:
Change of pick-up and drop-out voltage Change of contact resistance
Contact welding detection
and Mis-contacting
detection circuit
250V AC
9V DC
Pick-up and drop-out voltage, V
30
10
9
8
7
6
5
4
3
2
1
0
Max.
Min.
x
Max.
Min.
x
No. of operations, ×104
Pick-up voltage
Drop-out voltage
Contact resistance, mΩ
No. of operations, ×104
30
100
90
80
70
60
50
40
30
20
10
0
Max.
Min.
x
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Panasonic Corporation Automation Controls Business Division
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LF-G (ALFG)
–4– ASCTB196E 201402-T
2. High capacity type (Contact Gap 1.5 mm .059 inch type)
3. High capacity type (Contact Gap 1.8 mm .071 inch type)
1. Coil temperature rise
Sample: ALFG2PF09, 6 pcs.
Point measured: coil inside
Ambient temperature: 20°C 68°F, 60°C 140°F
Contact carrying current: 31A
2. Ambient temperature characteristics and coil
applied voltage
Coil applied voltage, %V
20°C
60°C140°F31A
60°C140°F0A
68°F31A
20°C68°F0A
1401201008060
100
80
60
40
20
Temperature rise, °C
Coil applied voltage, %V
9001020304050607080
19432 50 68 86 104 122 140 158 176
180
140
100
60
0
Contact carrying
current: 31A
Pick-up voltage
Coil & contact
no carrying current
*Inside the coil temperature
155°C311°F(UL Class F)
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
set as 155°C311°F)
°F
Ambient temperature, °C
3. Electrical life test
(31A 250V AC cos
φ
= 0.8 Inductive load)
Sample: ALFG2PF09, 6 pcs.
Operation frequency: ON:OFF = 0.1s:10s
Ambient temperature: 85°C 185°F
Circuit:
Change of pick-up and drop-out voltage Change of contact resistance
Contact welding detection
and Mis-contacting
detection circuit
250V AC
9V DC
Pick-up and drop-out voltage, V
30
10
9
8
7
6
5
4
3
2
1
0
Max.
Min.
x
Max.
Min.
x
No. of operations, ×104
Pick-up voltage
Drop-out voltage
Contact resistance, mΩ
No. of operations, ×104
30
100
90
80
70
60
50
40
30
20
10
0
Max.
Min.
x
1. Coil temperature rise
Sample: ALFG2PF091, 6 pcs.
Point measured: coil inside
Ambient temperature: 20°C 68°F, 60°C 140°F
Contact carrying current: 33A
2. Ambient temperature characteristics and coil
applied voltage
1401201008060
120
100
80
60
40
20
248
212
176
140
104
68
Coil applied voltage, %V
20°C
60°C140°F33A
60°C140°F0A
68°F33A
20°C68°F0A
Temperature rise, °C°F
0
32 10
50 20
68 30
86 40
104 50
122 60
140 70
158 80
176 90
194
180
140
100
60
Coil applied voltage, %V
Ambient temperature, °C°F
Contact carrying
current: 33A
Pick-up voltage
Coil & contact
no carrying current
*Inside the coil temperature
155°C311°F(UL Class F)
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
set as 155°C311°F)
3. Electrical life test
(33A 250V AC cos
φ
= 0.8 Inductive load)
Sample: ALFG2PF091, 6 pcs.
Operation frequency: ON:OFF = 0.1s:10s
Ambient temperature: 85°C 185°F
Circuit:
Change of pick-up and drop-out voltage Change of contact resistance
Contact welding detection
and Mis-contacting
detection circuit
250V AC
9V DC
Pick-up and drop-out voltage, V
No. of operations, ×104
30
10
9
8
7
6
5
4
3
2
1
0
Max.
Min.
x
Max.
Min.
x
Pick-up voltage
Drop-out voltage
No. of operations, ×104
Max.
Min.
x
Contact resistance, mΩ
30
100
90
80
70
60
50
40
30
20
10
0
Panasonic Corporation 2014©
Panasonic Corporation Automation Controls Business Division
industrial.panasonic.com/ac/e/
LF-G (ALFG)
–5– ASCTB196E 201402-T
DIMENSIONS (mm inch)
SAFETY STANDARDS
NOTES
Certification authority
Standard type High capacity type
Contact Gap 1.5 mm .059 inch type
Contact Gap 1.8 mm .071 inch type Contact Gap 1.5 mm .059 inch type Contact Gap 1.8 mm .071 inch type
UL/C-UL 22A 277V AC General Use (at 85°C 185°F) 31A 277V AC General Use (at 85°C 185°F) 33A 277V AC General Use (at 85°C 185°F)
VDE (VDE0435) 22A 250V AC cos
φ
= 0.8 (at 85°C 185°F) 31A 250V AC cos
φ
= 0.8 (at 85°C 185°F) 33A 250V AC General Use (at 85°C 185°F)
The CAD data of the products with a CAD Data mark can be downloaded from: http://industrial.panasonic.com/ac/e/
External dimensions
23.3
.917
4.0
.157
0.5
.020
15.7
.618
12.0
.472
22.0
.866
27.6
1.087
30.1
1.185
PC board pattern (Bottom view)
Tolerance: ±0.1 ±.004
Schematic (Bottom view)
10.0±0.1
.394±.004
27.6±0.1
1.087±.004
12.0±0.1
.472±.004
13.8±0.1
.543±.004
12.0±0.1
.472±.004
1.8 dia.
.071 dia.
1.8 dia.
.071 dia.
2.0 dia.
.079 dia.
2.0 dia.
.079 dia.
NO COM
CAD Data
Dimension:
Less than 1mm .039inch:
Min. 1mm .039inch less than 3mm .118 inch:
Min. 3mm .118 inch:
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
1. For cautions for use, please read
“GENERAL APPLICATION
GUIDELINES” on page B-1.
2. Usage, transport and storage
conditions
1) Temperature:
–40 to +60°C –40 to +140°F (When
nominal coil voltage applied)
–40 to +85°C –40 to +185°F (When coil
holding voltage is 45% to 80% of the
nominal coil voltage)
2) Humidity: 5 to 85% RH
(Avoid freezing and condensation.)
The humidity range varies with the
temperature. Use within the range
indicated in the graph below.
3) Atmospheric pressure: 86 to 106 kPa
Temperature and humidity range for
usage, transport, and storage
∗ –40 to +85°C –40 to +185°F (When 45% to
80%V of coil holding voltage)
85
5
060–40
Humidity, %RH
Tolerance range
+32 +140–40
Temperature, °C°F
(Avoid freezing
when used at
temperatures lower
than 0°C
(Avoid
condensation
when used at
temperatures
higher than
0°C32°F)
32°F)
85
5
Humidity, %RH
Tolerance range
(Avoid
condensation
when used at
temperatures
higher than
0°C32°F)
(Avoid freezing
when used at
temperatures
lower than
0°C32°F)
850–40 +185+32–40
Te mperature, °C°F
