Power Transformer Kema Test 120mva 230kv 500kv; Power Transformer; Power Supply

Product Specifications

Prod Model:	SFZ 120000/230/35KV
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Phase:	Three
Coil:	Core-type Transformer
Cooling Method:	Oil-immersed Type Transformer
Winding Type:	Two-winding Transformer
Application:	Audio

Product Description

Power Transformer
230-242kV on-load-tap-changing power transformer is made of high-quality silicon-steel sheets, and laminated by steps. It is advantageous in low loss, low noise, low voltage partial discharge and high anti short-circuit capacity. The dynamical and thermal stability of this transformer, of which the coils are winded by high-quality oxygen-free copper wire as well as used pre-compressing brackets processes and interior and exterior structure. The transformer tank used wave form shell, has very nice appearance, the core is with D shape yoke and 45 angle seaming. The core and oil box are well fixed and well protected on moving.
Three-phase dual winding oil immersed power transformer with OLTC
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

	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

  14 th. Insulation Level: A                                                                                                                                                                                                                                                                                                                                    15 th. Field strength between transformer winding turns is no more than 2kV/mm                        16 th. 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                                                                                                                                            17 TH. 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                                                                                                                                                                                                                                                                18 th. Overloading capability                                                                                                                                                                                                                                                                                                                                                                Short-time overloading capability of transformer and overload running time are as fol          low:  

Over current	30	45	60	75	100
Allowable running time min	120	80	45	20	10