TJN15-12 Indoor high voltage grounding switch
Outline
The performance of TJN15-12 type indoor high voltage grounding switch conforms to the requirements of GB1985-89 AC High Voltage Isolating Switch and Grounding Switch and IEC129. It is suitable for the power system of 12KV and below AC 50Hz, and can be used with various types of high voltage switchgear for earthing protection.
Advanced design, reliable technical performance;
Simple structure, convenient installation and debugging;
Fast separation and combining ability.
Environmental condition
Altitude not exceeding 1000m;
Ambient air temperature: upper limit 40 ℃, lower limit -10 ℃
Allow storage and transportation at 30 ℃;
The seismic intensity does not exceed 8 degrees;
No flammable, explosive, severe dust, chemical corrosion and violent vibration site.
Main technical parameters
|
Item |
Unit |
Data |
||
|
Rated voltage |
KV |
12 |
||
|
Rated short-time withstand current |
KV |
31.5 |
||
|
Rated short time withstand time |
s |
4 |
||
|
Rated short-circuit closing current |
kA |
80 |
||
|
Rated peak withstand current |
kA |
80 |
||
|
Interpolar center distance |
mm |
150；210；275 |
||
|
Rated insulation level |
1min power frequency withstand voltage |
kV |
To the ground, phase//phase |
42/48 75/85 |
|
Lightning impulsive withstand voltage |
||||
Outline overall and installing dimensions
| Type specification | L | E | C |
| TJN15-12/31.5-210 | 655 | 210 | 516 |
| TJN15-12/31.5-230 | 710 | 230 | 556 |
| TJN15-12/31.5-250 | 760 | 250 | 596 |
| TJN15-12/31.5-275 | 810 | 275 | 646 |
