JN22B-40.5/31.5 Indoor high voltage AC grounding switch earthing switch from JUCRO Electric
- Model
- JN22B-40.5/31.5
Review
Description
JN22B-40.5/31.5 indoor high voltage grounding switch (hereinafter
referred to as grounding switch) is a new product developed by the company. Its
performance meets the requirements of national standard GB1985-2004 "AC
high-voltage isolating switch and grounding switch" and IEC62271-102:2002.
It is applicable to three-phase rated voltage 40.5kV, AC 50Hz power system, and
KYN61-40.5 high voltage switch. Cabinets and other high-voltage switchgears are
used together as a grounding protection for high-voltage electrical equipment
maintenance.
The JN22B-40.5/31.5
indoor high voltage grounding switch is improved on the basis of the above
grounding switch. The structure is simple and compact, the performance is
consistent, and it is easy to operate at a small angle. As with the JN15-12
series, JN15-12 connections and transmissions are available.
1. The
altitude does not exceed 1000m:
2. Ambient air temperature: +40°C ~ -20°C;
3. The earthquake intensity does not exceed 8 degrees;
4. Installed in a place where there is no fire, explosion hazard, severe dust, chemical corrosion and severe vibration.
CODING RULES
Item |
Unit |
Data |
|
Rated voltage | KV | 40.5 | |
Rated short-time withstand current | KA | 31.5 | |
Rated withstand current(peak value) | KA | 80 | |
Rated short-circuit making current |
KA |
80 |
|
Rated insulation level |
Power
frequency withstand voltage(1 min) |
KV |
95 |
Lightning
impulse voltage | KV | 185 |
Model
|
Phase to phase distance A | F |
principal axis L
|
The height of the sensor for plateau type H
|
JN22B-40.5/31.5-280
|
280 | 290 |
1010
|
Below 1000 meters 145 Below 2000 meters 170 Below 3000 meters
185 |
JN22B-40.5/31.5-300 | 300 | 340 | 1100 | |
JN22B-40.5/31.5-350 | 350 | 340 | 1200 | |
JN22B-40.5/31.5-360
|
360 | 320 |
1200
|
|
JN22B-40.5/31.5-400
|
400 | 340 |
1300
|