120000kVA Three Phase Oil Power Transformer 230kv 161kv 33kv Distribution Transformers on Load Tap Changer
Basic Info.
Model NO.
SFZ 120000/230/35KV
Cooling Method
Oil-immersed Type Transformer
Winding Type
Two-winding Transformer
Certification
ISO9001-2000
Usage
Power Transformer
Frequency Characteristics
Power Frequency
Shape of Core
Ring
Brand
Ville
Test Certification
Kema Transformer Test
Transport Package
Wooden Cases
Specification
IEC Standard
Origin
Ningbo
HS Code
8504231200
Production Capacity
1/6monthes
Technical parameters:
Type: SFZ-120000/230
Rated voltage: 230/34 kV
Rated capacity: 100000/120000kVA
Rated voltage ratio: 230± 8× 1.25%/34kV
Rated current: 301/2038A
Phase number: Three
Rated frequency: 50 Hz
Connection: Ynyn0(d11)
Voltage regulating method: Neutral point on-load Regulating
Short circuit impedance: 9.5%(10MVA)
Cooling mode: ONAN/ONAF
![120000kVA Three Phase Oil Power Transformer 230kv 161kv 33kv Distribution Transformers on Load Tap Changer]()
![120000kVA Three Phase Oil Power Transformer 230kv 161kv 33kv Distribution Transformers on Load Tap Changer]()
Insulation Level: A
Field strength between transformer winding turns is no more than 2kV/mm
Transformer loss (under 75) no-load current and efficiency
No-load Loss: 92 kW According to IEC standard
Load Loss: 356 kW According to IEC standard
No-load current: 0.3 % According to IEC standard
Radio interference and corona
Under the Maximum phrase voltage, corona is not visible from outgoing terminal in the night of clear day at outdoor. Radio interference
voltage is no more than 2500Uv
Overloading capability
Short-time overloading capability of transformer and overload running time are as follow:
Type: SFZ-120000/230
Rated voltage: 230/34 kV
Rated capacity: 100000/120000kVA
Rated voltage ratio: 230± 8× 1.25%/34kV
Rated current: 301/2038A
Phase number: Three
Rated frequency: 50 Hz
Connection: Ynyn0(d11)
Voltage regulating method: Neutral point on-load Regulating
Short circuit impedance: 9.5%(10MVA)
Cooling mode: ONAN/ONAF
| Description: | Lightning impulse withstand voltage(kV peak value) | 1minMain frequency withstand voltage (kV RMS) |
|
| Full wave | Chopped wave | ||
| High voltage side | 1050 | 1175 | 460 |
| Neutral point of high voltage | (1050) | ( 460 ) | |
| Low voltage side | 170 | 185 | 70 |
| Neutral point of low voltage | 170 | 70 | |
Field strength between transformer winding turns is no more than 2kV/mm
Transformer loss (under 75) no-load current and efficiency
No-load Loss: 92 kW According to IEC standard
Load Loss: 356 kW According to IEC standard
No-load current: 0.3 % According to IEC standard
Radio interference and corona
Under the Maximum phrase voltage, corona is not visible from outgoing terminal in the night of clear day at outdoor. Radio interference
voltage is no more than 2500Uv
Overloading capability
Short-time overloading capability of transformer and overload running time are as follow:
| Over current | 30 | 45 | 60 | 75 | 100 |
| Allowable running time min | 120 | 80 | 45 | 20 | 10 |
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