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LF (ALF)
2. Speci?cations
Characteristics
Contact
Rating
Item
Contact material
Arrangement
Contact resistance (Initial)
Nominal switching capacity (resistive load)
Max. switching power (resistive load)
Max. switching voltage
Max. switching current
Nominal operating power
Min. switching capacity (reference value)* 1
Insulation resistance (Initial)
Speci?cations
AgSnO 2 type
1 Form A
Max. 100 m ? (By voltage drop 6 V DC 1A)
20A 250V AC
6,250VA
250V AC
25A
900mW
100mA, 5V DC
Min. 1,000M ? (at 500V DC) Measurement at same location as “Breakdown voltage” section.
Breakdown voltage
(Initial)
Between open contacts
Between contact and coil
1,000 Vrms for 1 min. (Detection current: 10 mA)
5,000 Vrms for 1 min. (Detection current: 10 mA)
Electrical
characteristics
Temperature rise (coil)
Surge breakdown voltage* 2
(Between contact and coil) (Initial)
Operate time (at nominal voltage) (at 20 ° C 68 ° F )
Release time (at nominal voltage) (at 20 ° C 68 ° F )
Max. 45 ° C 113 ° F (By resistive method, nominal coil voltage applied to the coil;
contact carrying current: 20A, at 60 ° C 140 ° F )
10,000 V
Max. 20 ms (excluding contact bounce time.)
Max. 15 ms (excluding contact bounce time) (With diode)
Mechanical
characteristics
Shock resistance
Vibration resistance
Functional
Destructive
Functional
Destructive
100 m/s 2 (Half-wave pulse of sine wave: 11 ms; detection time: 10 μ s.)
1,000 m/s 2 (Half-wave pulse of sine wave: 6 ms.)
10 to 55 Hz at double amplitude of 1.5 mm (Detection time: 10 μ s.)
10 to 55 Hz at double amplitude of 1.5 mm
Expected life
Conditions
Mechanical (at 180 times/min.)
Electrical (at 20 times/min.)
Conditions for operation, transport and storage* 3
Min. 2 × 10 6
Min. 10 5 (resistive load)
Ambient temperature: –40 ° C to +60 ° C –40 ° F to +140 ° F ,
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Unit weight
Max. operating speed
20 times/min. (at nominal switching capacity)
Approx. 23 g .81 oz
* Speci?cations will vary with foreign standards certi?cation ratings.
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 × 50 μ s according to JEC-212-1981
*3. 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.
3. Switching capacity
Resistive load
20 A, 250 V AC (cos φ = 1)
25 A, 250 V AC (cos φ = 1)
Min. 10 5
(at 20 times/min.)
Min. 10 4
(at 20 times/min.)
Electrical Life
Compressor load
Inverter load
Inrush 70 A (cos φ = 0.7), Steady 20 A (cos φ = 0.9)
250 V AC
Inrush 200 A, Steady 20 A
100 V AC
Inrush 100 A, Steady 10 A
200 V AC
Min. 10 5
(at 20 times/min.)
Min. 3 × 10 4
(at 10 times/min.)
Min. 3 × 10 4
(at 10 times/min.)
REFERENCE DATA
1. Coil temperature rise
Sample: ALF1T12, 6 pcs.
Point measured: coil inside
Contact current: 20A
Ambient temperature: 25 ° C 77 ° F , 60 ° C 140 ° F
2-(1). 200V AC electrical life test
(200V AC, inverter load)
Sample: ALF1T12, 6 pcs.
Load: Inrush 102A (wave peak value),
Steady 14.4A (wave peak value)
70
158
60
140
25 ° C 77 ° F
60 ° C 140 ° F
Inverter dummy 200V AC
Switching frequency: ON 1s, OFF 5s
Circuit:
12
10
Contact welding: 0 times
Miscontact: 0 times
50
122
40
104
LF relay contact
8
Pick-up voltage
Max.
x
Min.
6
30
86
20
68
10
50
200V AC
1.9 ?
Switch
2,000 μ F
4
2
Drop-out voltage
Max.
x
Min.
0
32
80
100
120
0
0
3
6
Coil applied voltage, %V
No. of operations, × 10 4
Panasonic Corporation
Automation Controls Business Unit
industrial.panasonic.com/ac/e/
ASCTB195E 201202-T
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