1.applicable to 110kV, 220kV or 330kV 2.Provide over-voltage protection for transformer point 3.modular design
1.Structure ( modular design )
(1)Disconnecting Switch
(2)Zinc-oxide Surge Arrestor
(3)Rod Gap
(4)Current Transformer
(5)Mounting Brackets
2.Installation: The complete device is supported on the cement posts or steel supports which is usually provided by the tender. W e can also supply the steel supports as an accessory.
3.Site condition:
(1)Ambient temperature: -50°C-70°C
(2)Altitude: less than 4500m.
(3)Frequency :50Hz or 60Hz
(4)Installation: Indoor or outdoor
4.
parameters tableTransformer system Nominal Voltage | 110kV | ||
Insulation level | Light impulse withstand voltage | 250 kV | 325 kV |
Power frequency withstand voltage | 95 kV | 140 kV | |
Rod Gap | Type | THT-TNP-110 | |
Descriptions | Electrode bar with hemispheric ends | ||
The adjustable range | 50-160mm | ||
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 | ||
Disconnecting Switch | Type | GW13-72.5 | |
Rated voltage | 72.5kV | ||
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 |
Nominal discharging current | 1.5kA | ||
Rated voltage | 60kV | 72kV | |
Continuous operating voltage | 48kV | 58kV | |
Lighting impulse residual voltage | 144kV | 186kV | |
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.
grounding and lightning protection
