IEC Prefabricated Compact Mobile Transformer Substation
110 - 132 KV Power Transformer Vehicle - borne Mobile Prefabricated Substation
General:
Series 110KV Three-phase Two-winding Off-circuit Tap-Changing Power Transformer has all the functions that an ordinary substation has and the service condition is presently good. After the launch of the products, they have Won
good praises from customers for their convenient and high-efficient
superior properties.
Technical parameters:
1. Technical parameters of switch equipment on LV side
| No. | Item | Unit | Parameter |
| 1 | System voltage | kV | 11.5 |
| 2 | Rated voltage | kV | 12 |
| 3 | Rated frequency | Hz | 50 |
| 4 | Rated current | A | 2000,1600,1250, |
| 5 | Rated 1min power frequency withstand voltage | kV | 42/48 |
| 6 | Rated lightning impulse withstand voltage | kV | 75/85 |
| 7 | Rated short time withstand current | kA | 40,31.5,25 |
| 8 | Rated short time withstand time | s | 4 |
| 9 | Rated peak withstand current | kA | 100,80,63 |
| 10 | Rated short circuit breaking current | kA | 40,31.5,25 |
| 11 | Rated short circuit making current | kA | 100,80,63 |
| 12 | Rated operation sequence | O 0.3s CO 180s CO | |
| 13 | Mechanical endurance | Times | ≥10000 |
- Sound level of the substation:≤65 dB
- Protection grade of enclosure of switch chamber:IP23(when the door for natural ventilation is open); IP43(when the door for natural ventilation is closed).
2. Technical parameters of HV side switch equipment
2.1 Rated technical parameters of disconnector (Table 1)
Table 1
| No. | Item | Unit | Parameter |
| 1 | System voltage | kV | 132 |
| 2 | Rated voltage | kV | 145 |
| 3 | Rated frequency | Hz | 50 |
| 4 | Rated current | A | 2000 ,1600 |
| 5 | Rated 1min power frequency withstand voltage | kV | 275 |
| 6 | Rated lightning impulse withstand voltage | kV | 650 |
| 7 | Rated short time withstand current | KA | 25,31.5,40 |
| 8 | Rated short time withstand time | s | 3 |
| 9 | Rated peak withstand current | kA | 63,80,100 |
2.2 Rated technical parameter of circuit breaker (Table 2)
Table 2
| No. | Item | Unit | Parameter | ||
| 1 | System voltage | kV | 132 | ||
| 2 | Rated voltage | kV | 145 | ||
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Rated current | A | 2000 | ||
| 5 | Rated 1min power frequency withstand voltage | kV | 275 | ||
| 6 | Rated lightning impulse withstand voltage | kV | 650 | ||
| 7 | Rated short time withstand current / time | KA/s | 40/4 | ||
| 8 | Rated peak withstand current | kA | 100 | ||
| 9 | Rated short circuit breaking current | kA | 40 | ||
| 10 | Rated short circuit making current | kA | 100 | ||
| 11 | DC component | % | 40 | ||
| 12 | Rated operation sequence | O 0.3s CO 180s CO | |||
| 13 | Opening time | ms | 35±5 | ||
| 14 | Closing time | ms | 105±15 | ||
| 15 | Breaking time | ms | ≤60 | ||
| 16 | Non-simultaneity between poles | Closing | ms | ≤5 | |
| Opening | ms | ≤3 | |||
| 17 | Fracture no. of each pole | 1 | |||
| 18 | Mechanical endurance | Times | ≥6000 | ||
| 19 | Full capacity continuous breaking times | Times | ≥20 | ||
| 20 |
SF6 gas pressure (20℃) |
Rated value | MPa | 0.60 | |
| Alarm value | MPa | 0.55 | |||
| Locking value | MPa | 0.50 | |||
| 21 |
SF6 gas moisture content(μl/l) |
Acceptance value | PPm | ≤150 | |
| Operation allowable value | PPm | ≤300 | |||
| 22 | SF6 yearly gas leakage rate | % | ≤0.5 | ||
| 23 | Total weight of each circuit breaker | kg | 2000 | ||
2.3 Parameters of current transformer (Table 3, table 4)
Table 3
| Rated primary current | 150,300,500,750,1000,1500,2000 |
| Rated secondary current | 5A |
|
Rated output capacity and accuracy level
|
See table 4 |
Table 4
| Current ratio | Rated output capacity VA | Measure accuracy level | Protection accuracy level |
|
150/5 300/5 500/5 750/5 1000/5 1500/5 2000/5 |
20 20 30 30,40 40,50 50 50 |
0.5 0.5 0.5 0.5 0.5 0.5 0.5 |
5P20 5P20 5P20 5P20 5P20 5P20 5P20 |
Note: (1) Straight-through type bushing current transformer is attached in the circuit breaker.
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