Omron G3PE - Page 11

Three-phase G3PE
11
Models with Externally Attached Heat Sinks
Heat Resistance Rth (Junction/SSR Back Surface)
Heat Resistance of Heat Sinks
Note: If a commercially available heat sink is used, use one that has
a heat resistance equal to or lower than a standard OMRON
Heat Sink.
Inrush Current Resistance: Non-repetitive
Keep the inrush current to below the inrush current resistance value (i.e., below the broken line) if it occurs repetitively.
G3PE-215B-3(N)(H)
G3PE-215B-2(N)(H)
G3PE-225B-3(N)(H), G3PE-525B-3(N)(H)
G3PE-225B-2(N)(H), G3PE-525B-2(N)(H)
G3PE-515B-3(N)(H),
G3PE-515B-2(N)(H),
G3PE-235B-3(N)(H), G3PE-535B-3(N)(H)
G3PE-235B-2(N)(H), G3PE-535B-2(N)(H)
G3PE-245B-3(N)(H), G3PE-545B-3(N)(H)
G3PE-245B-2(N)(H), G3PE-545B-2(N)(H)
250
200
150
100
50
0
10 30 50
100 300 500 1,000 3,000 5,000
Inrush current (A. Peak)
Energized time (ms)
250
200
150
100
50
0
10 30 50
100 300 500 1,000 3,000 5,000
Inrush current (A. Peak)
Energized time (ms)
500
400
300
200
100
0
10 30 50
100 300 500 1,000 3,000 5,000
Inrush current (A. Peak)
Energized time (ms)
Heat Sink Area vs. Load Current (40°C and 80°C)
G3PE-225B-3H G3PE-525B-3H
Note: The heat sink area is the combined
area of all surfaces of the heat sink
that radiate heat.
For the G3PE-525B-3H, when a
current of 18 A flows through the SSR
at 40°C, the graph shows that a heat
sink area of about 2,500 cm
2
would
be required. Therefore, if the heat
sink is square, one side of an
aluminum plate in the heat sink must
be 36 cm or longer (√2,500
(cm
2
)/2 =
36 cm (rounded to a whole number)).
Load current (A)
0 10 20 30 40
Heat sink area (cm
2
)
30,000
50,000
10,000
5,000
3,000
1,000
500
300
100
Ambient temperature
+ 80°C
Ambient temperature
+ 40°C
Aluminum plate t = 3.0
0 10 20 30 40
30,000
50,000
10,000
5,000
3,000
1,000
500
300
100
Load current (A)
Heat sink area (cm
2
)
Ambient temperature
+ 80°C
Ambient temperature
+ 40°C
Aluminum plate t = 3.0
Model Rth (°C/W)
G3PE-215B-3H 1.05
G3PE-225B-3H 0.57
G3PE-235B-3H 0.57
G3PE-245B-3H 0.57
Model Rth (°C/W)
Y92B-P50 1.67
Y92B-P100 1.01
Y92B-P150 0.63
Y92B-P200 0.43
Y92B-P250 0.36