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220kV Lightning Neutral Grounding Resistor For Transformer

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Shendian Electric Co. Ltd

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Brand Name :	Xi'an Shendian
Model Number :	TJZB-35
Certification :	IEC 60099-4/ GB 11032
Price :	To be determined by type and quantity.
Payment Terms :	T/T; L/C.
Supply Ability :	1000 pc/year.
Delivery Time :	Ex-work 30 days~60 days depends on quantity.

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220kV 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	Offered	Offered	Offered
1	Type			TJZB-35	TJZB-110	TJZB-220	TJZB-330
2	TR rated voltage		kV	35	110	220	330
3	Power frequency voltage		kV	95	95	200	230
4	Lightning impulse voltage withstand		kV	185	250	400	550
5	Metal-oxide surge arrester	Type		Y(H)1.5W-30/98	Y(H)1.5W-72/186	Y(H)1.5W-144/320	Y(H)1.5W-210/440
		Rated voltage	kV	30	72	144	210
		Residual voltage at lightning impulse	kV	≯98	≯186	≯320	≯440
		Residual voltage at switching impulse	kV	≯88	≯174	≯299	≯411
		Reference voltage at D.C. 1mA	kV	≮61	≮103	≮205	≮288
		Leakage current at 0.75U1mA	μA	≯50	≯50	≯50	≯50
6	Disconnect switch	Rated voltage	kV	40.5	72.5	126	252
		Rated current	A	630	630	630	630
		Operation mechanism		Motor/ Manual	Motor/ Manual	Motor/ Manual	Motor/ Manual
		Rated short-time current withstand	kA	31.5	31.5	31.5	31.5
		Rated peak current withstand	kV	80	80	80	80
7	Current transformer	Rated voltage	kV	10	10	10	10
		Rated insulation level		42/75	42/75	42/75	42/75
		Rated dynamic current	kA	110	110	110	110
8	Discharge gap	Gap type		Ball/ Rod	Ball/ Rod	Ball/ Rod	Ball/ Rod
		Power frequecny discharge voltage	kV	55±10%	83±10%	166±10%	190±10%
		Impulse discharge voltage	kV	≯150	≯215	≯350	≯480
		Gap distance	mm	30~35 adjustable	60~100 adjustable	130~200 adjustable	170~250 adjustable
9	Monitor	Type		JCQ-CⅠ	JCQ-CⅠ	JCQ-CⅡ	JCQ-CⅢ
		Current measurement range	mA	0~5	0~5	0~10	0~15
		Operation current range	A	50~20000	50~20000	50~20000	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.

Product Tags:

220kV Lightning Resistor

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