220KV Transformer Neutral Gap Grounding Protection Complete Set
Product Description and Application:
110kV, 220kV, 330kV is the main voltage level of the power supply system, the neutral point of the general use of direct grounding, due to relay protection settings and to prevent communication interference and other requirements, and in order to limit the single-phase short-circuit current, some of which use Neutral ungrounded way. In this mode of operation, due to lightning, single-phase ground short-circuit fault will cause a neutral point over-voltage, and transformers are mostly graded insulation, so over-voltage insulation of the neutral point caused a great threat, to be set to protect Device to prevent accidents.
Product Features:
1. Meet the standards, professional manufacturing;
2. The design of new, the overall installation, with a small size, easy installation and commissioning, high reliability characteristics;
3. Effective protection, stable characteristics, improve the protection of security and protection;
4. Group with flexible, easy to use;
5. Strong technical force, courteous service.
Technical Parameters for reference:
| 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 totally closed 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 impulseresidual voltage |
144kV |
186kV |
320kV |
| Counter/Monitor |
JS8 type surge arrester counter/JCQ3 type surge arrestermonitor |
Product Tags:
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Outdoor Harmonic Filter Resistor , Insulation Neutral Grounding Transformer Images
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