35kV Neutral Grounding Protection Device for Transformer



Product introduction:

This kind of transformer neutral protection device adopts modular construction.

It has been running well in high altitude area over decades year.


Characteristic:
1/ Entirety assembly and transportation;
2/ Easy to install and more stable;
3/ Anti-corrosion and anti-aging.

Standard Technical Data:
Below info. only for your reference, all data shall be specified and determined by technical specification and customer demand.

Item Description Offered
1 Type TJZB-35
2 TR rated voltage kV 35
3 Power frequency voltage kV 95
4 Lightning impulse voltage withstand kV 185
5 Metal-oxide
surge arrester Type Y(H)1.5W-30/98
Rated voltage kV 30
Residual voltage at lightning impulse kV ≯98
Residual voltage at switching impulse kV ≯88
Reference voltage at D.C. 1mA kV ≮61
Leakage current at 0.75U1mA μA ≯50
6 Disconnect
switch Rated voltage kV 40.5
Rated current A 630
Operation mechanism Motor/ Manual
Rated short-time current withstand kA 31.5
Rated peak current withstand kV 80
7 Current
transformer Rated voltage kV 10
Rated insulation level 42/75
Rated dynamic current kA 110
8 Discharge
gap Gap type Ball/ Rod
Power frequecny discharge voltage kV 55±10%
Impulse discharge voltage kV ≯150
Gap distance mm 30~35 adjustable
9 Monitor Type JCQ-CⅠ
Current measurement range mA 0~5
Operation current range A 50~20000


Reference:
1/ Shendian resistor is widely used in China EHV (Extra hight voltage) projects of State Grid, Southern Power Grid.
2/ Supplied resistor to ABB/Siemens/Schneider more than 20 years, as well as other capacitor/switchgear manufacturers.
3/ Shendian resistor has been exported to more than 30 counties all over the world.
35kV Lightning Resistor Neutral Grounding Protection Device 0