21 Mva Mva 33/ Kv Furnace Transformer | RFQ Sourcing Details
Electronics Industry · Quote on request
This is a product procurement detail page: check specs, images, category context and related sourcing paths before sending an RFQ.
Product specs
Buyer's Digest
Use this page as a product-first sourcing checkpoint before sending an RFQ. Category: Electronics Industry. Confirm application fit, capacity, materials, destination, lead time and compliance requirements before comparing suppliers.
Original product description
21mva electric arc furnace with serial reactor The tansformer rating is 21 MVA'33000/ Volt, 3 phase, 50 Hz suitab. Ie for furnace duty appli. Cation. lt is povided with coolers for OFWF (Oil forced water forced) Cooling.
The salient featues of the Transformer are as foIIows: The tansformer Rating No-1oad voitage HV V Tap cha=gjng equipment Frequency Type of coo=ng Connections Coo. Ier capacity OIow ate Wate fiow rate Curent Transfome Customer STEEL, HAMA, 21 MVAfo LV480 to 372 vo. Its 21 MVAto lO.84 MVAfoLV372 to 192 volts 33000 vo.
Its 480 to 372 V (Constant MVA) Taps at constant MVA: 480'462,444,426, 408,390,372 372 to 192 V (Constant curent) Taps at constant current‥ 372354,336,318,300, 282,264)246,228,210,192 Taps ae povided on HV side to vary LV as mentio=ed above by means of on-Ioad tap change Suitable fo local manua,ocaI e.
Iectical and emote e. Iecticai opeation. Type-M350Y72.51B, 10.19.3W Make - Eason MR 50. Hz OFWF 2X lOO% HV- De. Ita LV- Open De. Ita 350 KW(1 Running + 1 standby) 1190 PM C○○Ie.
WTI CT: ,18,2.0 7.5VA, CIassO.5 On HVside 1.1 TECHNICAL DESCRIPTION (Solution 1: MR VMIII 6 50 /72D OLTC,with booster transformer ) 1.1.1 GENERAL TECHNICAL DATA Highest voltage 36k V 50. Hz Operating voltage 33 kV±5% 50. Hz Voltage for aux. drivers 38 0V 50. Hz Control voltage 2 2 0V 50. Hz Interlock voltage 2 2 0V 50.
Hz PLC signals 24V DC Ambient temperature max./min. 45 / - 10 Deg. C Altitude 1 5 00 m Humidity 80 % 1.1.2 TRANSFORMER DATA Operating voltage 33kV± 5 % Frequency 50.
Hz ±1% Operation Continuously Rated capacity 25 MVA + 20% Overload Rated primary current 437.4 A (+ 20% Overload) Insulation level Winding: Um: AC: BIL: MV LV 52 kV 1 , 1 kV 95 kV 6 kV 250 kV - Protection level IP54 Vector group D / d0 Secondary connection Open Delta System short circuit capacity 1 5 00 MVA Secondary current 35 .
042 KA (+ 20% Overload) Secondary voltage range V ( 480 V at tap position 1 ) (See APPENDIX: Data for reference ) Constant power V Constant current V Regulation method Constant flux , Tapping with booster transformer Short-circuit impedance voltage 7.1 % (at LV max.
Voltage 480V ) 8.69 % (at LV 412 V) Short circuit duration 3 sec Type of tap changer On-load , Oil Immersed Type Manufacturer HM China ( Shanghai Huaming ) Model M III- 60 0 /72 B -1 0193 W Number of taps 17 Winding Materials Copper Cooling Type OFWF a. Number of
21 | Applications and Buyer Notes
21 is organized as a sourcing-ready Electronics Industry reference. The page combines visible product or company data with structured procurement cues so buyers can compare application fit, specifications, quantity, quality requirements and lead-time questions
Applications
- Initial shortlist building for related product or supplier options.
- Specification and application fit review before bulk purchasing.
- Category, keyword and detail-page comparison before sending an RFQ.
Key specifications
- Category
- Electronics IndustryBased on visible page data; confirm exact value in the RFQ.
- Unit
- setBased on visible page data; confirm exact value in the RFQ.
- Type
- OFWF a. Number ofBased on visible page data; confirm exact value in the RFQ.
- voltage
- 7.1 % (at LV maxBased on visible page data; confirm exact value in the RFQ.
Buyer tips
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- Add certification, material or inspection standards when they affect acceptance.
- For time-sensitive projects, include target arrival date and destination.
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FAQ
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Confirm application, specification, quantity, destination and lead-time requirements before comparing offers.
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Source mix: ugc
Key specifications
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