Scheme 1: photovoltaic power generation combined transformer (United States variable structure)
Scheme 2: PV pre-installed substation (China transformer structure) Rated capacity (KVA)
Scheme 3: High-voltage/low-voltage pre-installed substation (Eutransformer structure) model is the same as scheme 2
● The altitude is generally not more than 1000m
● The ambient temperature range is -25°C~+45°C
● Outdoor wind speed shall not exceed 35m/s
● Anti-shock: horizontal acceleration 0.3m/s; Vertical acceleration is not more than 0.15m/s²
● Fouling rating: dish
● Installation location: outdoor
● System voltage: 35KV, 36.75KV, 38.5KV
● High voltage side high working voltage: 40.5KV
● Rated voltage of low voltage side: 0.27KV, 0.315KV, 0.4KV
● Rated frequency: 50Hz
● High voltage switch power frequency withstand voltage: 95KV
● Power frequency withstand voltage of transformer: 85KV
● Peak impact voltage: 200KV
● Transformer low voltage side power frequency withstand voltage: 5KV
● Phase number: three phase
● Protection class: IP68 for fuel tank, IP54 for high and low pressure chamber, IP3X for high pressure chamber door after opening
Conventional transformer technical parameters
| Rated capacity (kVA) | High voltage combination and tap range | Coupling group Label | No load loss kW(9) |
Load loss kW(9) |
Short circuit impedance % |
||
| High voltage(kV) |
Tap range(%) | Low voltage(kV) |
|||||
| 1000 | 35 | ±2×2.5 | 0.315 0.27 0.3 0.4 |
Yd11,d11 | As requested by client |
As requested by client |
6.5 |
| 1100 | 36.75 | ||||||
| 1250 | 38.5 | ||||||
Technical parameters of high pressure oil immersed load switch
| Description | Parameters |
| Model number | BYFI-40.5(manual operation) |
| Voltage rating(KV) | 40.5 |
| Power frequency withstand voltage(KV) | 95 |
| Lightning Impulse voltage(KV) | 200 |
| Rated current(A) | 630 |
| Rated short-time withstand current and time(KV)/2s | 20 |
| Breaking current ability(A) | 630 |
| Mechanical life | 2000(cycles) |
Technical parameters of high pressure oil immersed fuse
| Description | Parameters |
| Model number | XRNT-40.5 |
| Fuse current rating(A) | 40 |
| Melt current rating(A) | 16(500KVA,630KVA) 31.5(1000KVA,1100KVA,1250KVA) |
| Fuse short circuit breaking current(KA) | 31.5 |
| After the fuse has blown,the fuse can be easily replaced on site | |
Technical parameters of high voltage arrester
| Description | Parameters |
| Model number | YH5WZ-51/134 |
| Type | Silicone rubber jacket gapless metal zinc oxide arrester |
| Rated voltage | 51 |
| Continuous running voltage | 40.8 |
| Rated current(A) | ≤73 |
| Dc 1mA reference voltage | |
| Nominal discharge current(KV)(peak) | ≥5 |
| Nominal discharge current residual voltage(KV)(peak) | ≤134 |
| 2ms square Wave Current Tolerance value(A)(peak) | 600~800 |
Technical parameters of low voltage frame circuit breaker
| Description | Parameters |
| Rated voltage(V) | 400 |
| Rated current(A) | 1250、1600、2000、2500、3200 |
| Short-time withstand current and time(kA/1s) | 50 |
Lighting overhaul transformer parameters
| Model number | Rated capacity | High pressure combination | Join group label | Phase | number | Frequency | |
| High voltage(kV) | Low pressure (KV) | ||||||
| SG10-□/0.315/0.4 | As per customer's request | 0.315 (0.3、0.27、0.4) |
0.4KV | Dyn11 | Three | phase | 50Hz |
High voltage vacuum isolated load switch, fuse combination electrical equipmenttechnical parameters
| Description | Parameters |
| Model number | FZRN21C-40.5D(manual and electric operation |
| Voltage rating(KV) | 40.5 |
| Power frequency withstand voltage(KV) | 95 |
| Lightning Impulse voltage(KV) | 185 |
| Rated current(A) | Fuse as rated |
| Rated short-time open circuit breaker(KA) | 20/31.5 |
| Mechanical life | 1000(times) |
Technical parameters of high pressure air type fuse
| Description | Parameters |
| Model number | XRNT-40.5 |
| Fuse current rating(A) | 40 |
| Melt current rating(A) | 16(500KVA,630KVA) 31.5(1000KVA,1100KVA,1250KVA) |
| Fuse short circuit breaking current(KA) | 31.5 |
| After the fuse has blown,the fuse can be easily replaced on site | |
