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product name: outdoor ac hv disconnector
item no.: spd105-12/1250-e-a, stands for 12kv outdoor dual-pole mounted ac hv disconnector with rated current of 1250a, epoxy resin insulator, with mounting backet and stainless steel bolt and hardware.
technical date (spd105-12/1250)
|
technical date |
unit |
value |
||
|
rated voltage un |
kv |
12 |
||
|
rated current un |
a |
1250 |
||
|
rated frequency |
hz |
60 |
||
|
short time withstand current/duration |
ka/s |
31.5/4 |
||
|
rated withstand current(peak) |
ka |
80 |
||
|
power frequency withstand voltage, 50/60 hz/min |
to earth and between phase |
dry |
kv |
54 |
|
across the isolating distance |
dry |
kv |
62 |
|
|
lighting impulse withstand voltage |
to earth and between phase |
kv |
96 |
|
|
across the isolating distance |
kv |
109 |
||
|
creepage distance |
silicon insulator |
mm |
516 |
|
|
epoxy insulator |
mm |
410 |
||
|
porcelain insulator |
mm |
400 |
||
|
creepage ratio |
silicon insulator |
mm/kv |
43 |
|
|
epoxy insulator |
mm/kv |
34 |
||
|
porcelain insulator |
mm/kv |
33 |
||
|
mechanical endurance (number of close-open operations) |
time |
3000 |
||
|
altitude |
m |
≤3000 |
||
|
ambient temperature |
℃ |
-40～ 70 |
||
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