JN22-40.5/31.5 3 Pole Indoor High voltage earthing switch for switchgear
|
No.
|
ITEM
|
Unit
|
Date
|
|
|
1
|
Rated voltage
|
KV
|
35
|
|
|
2
|
Maximum voltage
|
KV
|
40.5
|
|
|
3
|
Rated short time withstand current
|
KA
|
31.5
|
|
|
4
|
Rated short circuit withsand time
|
S
|
4
|
|
|
5
|
Rated short circuit making current
|
KA
|
80
|
|
|
6
|
Rated peak withstand current
|
KA
|
80
|
|
|
7
|
Rated insulation lever
|
1main power frequency withstand voltage
|
KV
|
95
|
|
Lighting impulse withstand voltage
|
185
|
|||
|
8
|
Central distance between poles
|
MM
|
300;350;400
|
|
Specification
JN22-40.5/31.5 indoor AC high voltage earthing switch is an advanced level product with high-tech parameters performance. After comprehensive evaluation, it conforms to GB1985 AC HV disconnect switch and earthing switch, applies to power system of 40.5kV and AC 50Hz. It owns short-circuit making capacity to protect other electric equipment not being damaged. It can be used with KYN61-40.5 and other types high voltage switchgear, also play a protective role in the high voltage electrical equipment overhaul.
working condition :
Ambient temperrature: -10 ℃ -+40℃；
Altitude:<=1000m;
Relative humidity: Daily average <=95%, Monthly average<=90%
Earthquake intensity:<=8 degree;
Dirtiness degree: II
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