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THT-TNP transformer neutral grounding protection device
THT-TNP transformer neutral grounding protection device

1.110kV220kV 330kV 2.Two operating modes:neutral grounding and nor-grounding 3.Intelligent control units are equipped.

I. Product Use

Provide over-voltage protection for neutral of 110 kV 220KV 33KV graded insulated transformers.

II. Product Features

(1)  Modular design, easy to choose type for different use.

(2)  The mounting brackets adopt seamless steel pipes,better stability and beautiful appearance.

(3)  Intelligent control units are equipped,electrical data can be uploaded via serial communications ports.

(4)  Use limit design bases on severe weather every 50 years.

(5)  High-voltage test equipment and test procedure ensure 100% delivery qualification rate.

III. Specifications and Models

Notes:

1. To increase an intelligent control unit, the letter "z" can be added to the end of the original type; for example: If an intelligent control unit is to be added to THT-TNP-110/220/I, the model should be: THT-TNP-110/220/I-Z.

2. The supporting structure can be customized.

Installation: Schematic diagramTypical products parameterstable

Transformer system Nominal Voltage

110kV

220kV

Insulation level

Light impulse withstand voltage

250 kV

325 kV

400kV

Power frequency withstand voltage

95 kV

140kV

200kV

Rod Gap

Type

THT-TNP-110

THT-TNP-220

Descriptions

Electrode bar with hemispheric ends

The adjustable range

50-160mm

250-360mm

Current Transformer(Used for protecting rod gap )

Type

THT-LJ80

Model

Epoxy-resin filled totallyclosed type

Rated primary current

100A 150A 300A 400A 500A 600A

Rated secondary current

1A/5A

Accurate combination and ratings

10P5/10P5 15VA/15VA

Disconnector

Type

GW13-72.5

GW13-126

Rated voltage

72.5kV

126Kv

Rated current

630A/1250A

Operating mechanism

CS17 type manual operating mechanism,CJ6 type motor-driven operating mechanism

Surge Arrester

Type

Y1.5W-60/144

Y1.5W-72/186

Y1.5W-144/320

Nominal discharging current

1.5kA

Rated voltage

60kV

72kV

144kV

Continuous operating voltage

48kV

58kV

116kV

Lighting impulse residual voltage

144kV

186kV

320kV

Counter/Monitor

JS8 type surge arrester counter/JCQ3 type surge arrester monitor

Note: the above table is relating to the general parameters for your consideration, please let us know if you have any special requirements.

 

THT-TNP transformer neutral grounding protection device

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