Best Price on Adjustable Water Pressure Switch - TJN4-12 Indoor high voltage grounding switch – TENPRO

Outline

TJN4-12 (G) type indoor high voltage grounding switch is used for 12KV indoor AC metal armored move open type metal closed switchgear and other high voltage switchgear major component, and can also be used separately. As a grounding protection in AC 50Hz power system under 12KV and below, it has the ability of closing short circuit current. It has the advantages of reasonable structure, small volume, flexible operation and easy installation and adjustment.
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Environmental condition

● Altitude 1000 ~ 3000m;

● Ambient air temperature: upper limit 40 ℃, lower limit -25 ℃;

● The intensity of the ground need not exceed 8 degrees;

● Places free of fire, explosion hazards, severe dust, chemical corrosion and violent vibration.

Main technical parameters

Item

Unit

Data

Rated current

kA

12

Rated short-time withstand current

kA

20

Rated short time withstand time

s

4

Rated peak withstand current

kA

50

Rated short-circuit closing current

kA

50

Center distance between poles

mm

210; 230; 250

Rated insulating level

1min power frequency withstand voltage

kV

42

Lightning impulse voltage

kV

75

Model Specifications

Model Specifications

A

B

C

TJN4-12G/20-210

752

210

628

TJN4-12G/20-230

792

230

668

TJN4-12G/20-250

832

250

708


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