JUCRO

JN22B-40.5/31.5 Indoor high voltage AC grounding switch earthing switch from JUCRO Electric

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Update Time 2020-04-29
JN22B-40.5/31.5 Indoor high voltage  three-phase AC grounding switch earthing switch  from JUCRO Electric

GENERAL

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.

WORKING CONDITION

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

MAIN TECHNICAL PARAMETERS
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
 DIMENSIONS
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

Below 3000 meters 210
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
OVERALL AND INSTALLATION DIMENSIONS