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The neutral point grounding device

total of x / x pictures

Product characteristics

1)The complete protection device has good integrity, making assembly on site quick and convenient.
2)Rod gap is an individual part with the martial of stainless steel, making gap distance easily adjusted.
3)Bracket adopts the support structure of hot galvanizing, stable and anticorrosion.
4)Hand-operating mechanism adopts CS17 serial thorough manpower mechanism, equipped with stainless steel box, with the advantages of convenient and labor-saving operation and strong abilities of waterproof, dustproof and corrosion prevention. It can be equipped with new DSW4 electromagnetic lock for user installing coding lock.
5)It adopts latest design current transformer, making assembly easy and performance more reliable.
6)Electric mechanism is CJTK type, which adopts stainless steel box and has artistic appearance, the good ability of dustproof, waterproof and anti-corrosion and simultaneous multiple interlock functions. The secondary components all adopt high quality products from famous or joint venture enterprise in domestic.

Technical parameters of product
Product type DNGC-110 DNGC-220
Voltage level of transformer 126/325 252
Withstand voltage of transformer neutral point 8/20 S lighting impulse withstand voltage kV(Peak)/kV 250 400
1min power frequency withstand voltage (rms) /kV 95/140 200
disconnector Type GW13-72.5 GW13-126
GW8-72.5 GW8-126
Rated current A 630
Main current resistance μΩ 400 450
Insulating distance after disconnector opening/mm ≥650 ≥1000
Operating mechanism CS17A hand-operating mechanism or CJTKB electric mechanism
ZnO arrestor Type YH1.5W-72/186 YH1.5W-144/320
Rated voltage/kV 72 144
Continuous running voltage/kV 58 116
8/20?S Lighting impulse current residual voltage not more than /k 186 320
DC 1mA reference voltage (not more than) /kV 105 205
2ms Square discharge current capacity/A 400
Post insulator Type ZSW-72.5 ZSW-126
Discharging gap Gap type Rod gap, sphere electrode
Type BJX-110 BJX-220
Stainless steel/copper
power frequency dry discharging voltage±10﹪ 83 164
gap electrode distance/mm 90-135adjustable 250-320adjustable
Current transformer type LMZW-10
Ratio 100/5、200/5、300/5、400/5、
500/5、600/5
Secondary protection class 5P/10、10P/10、10P/20
burden 10VA、20VA、30VA
Support frame φ194X6 steel pipe Hot galvanizing
3000mm adjustable

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