Appendix
Continuous current Circuit breaker type
A 38-3AH3-31 38-3AH3-40 38-3AH3-1500
1,200 800 (364) 850 (387) 800 (364)
2,000 900 (409) 950 (432) 900 (409)
3,000 1,000 (455) 1,050 (478) 1,000 (455)
Table 10: Type 38-3AH3 vacuum circuit breaker weight in lbs (kg)
1, 2, 3
Footnotes:
1.
Weight estimates are for circuit breaker only.
Add 125 lbs (57 kg) for packaging.
2.
Weight and dimensions are approximate..
3.
Approximate circuit breaker dimensions in
inches (mm) (W x D x H):
Net 44" (1,117 mm) x 46" (1,168 mm) x 51"
(1,294 mm)
Packed for shipment separate from switchgear:
48" (1,218 mm) x 48" (1,218 mm) x 60"
(1,522 mm).
Spring charging time
≤ 10 s
Close time from energizing close coil at rated
control voltage to contact touch (last pole)
38 kV
≤ 70 ms
Opening time from energization trip coil
at rated control voltage to contact part
(last pole), not including arcing time
5-cycle interrupting time (83 ms)
38 kV
≤ 56 ms
3.5-cycle interrupting time (58 ms) 38 kV
≤ 43 ms
3-cycle interrupting time (50 ms)
38 kV
≤ 38 ms
Table 11: Circuit breaker operating times (type 3AH3 operator)
63
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