ABB 3BHE024855R0101 UFC921A101

Brand/ Manufacturer:
ABB
Dimensions:
33.3cm*16cm*2.8cm
Weight:
0.34kg
Country of Origin: :
Sweden
Description:
Circuit Board

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Mfr. Part Number:	3BHE024855R0101 UFC921A101

Manufacturer:	ABB

Description:	3BHE024855R0101 UFC921A101 New ABB ACS2000 Converter Circuit Board IN STOCK READY TO SHIP

Full Description:	3BHE024855R0101 \| ABB INT-2 Board Varnished UFC921A101

Sales manager: Tiffany Guan plcsale@mooreplc.com + 86 18030235313 dddemi33 2851195473

UFC921A101 is the most widely used UNITROL 5000 excitation system. Switzerland ABB product, model: UNITROL 5000, self shunt static excitation system The static excitation system of generator controls the excitation current through silicon controlled rectifier bridge to achieve the purpose of regulating the voltage and reactive power of synchronous generator.

UFC921A101 is mainly divided into four parts:
1. Excitation transformer;
2. Excitation regulator (AVR);
3. Silicon controlled rectifier;
4. Excitation and de excitation unit.

Excitation transformer
The excitation transformers are three single-phase epoxy cast dry-type transformers produced by Guangdong Shunte Electric Co., Ltd; The total capacity is 3X3300KVA; The transformation ratio is 27kV/1060V. Natural air cooling (with cooling fan) is adopted. When the temperature of excitation transformer reaches 100 ℃, the cooling fan starts automatically; When the temperature drops to 80 ℃, the fan will stop automatically. When the temperature of excitation transformer reaches 130 ℃, an overtemperature alarm will be given. Three sets of bushing CT are provided for each phase on the high-voltage side, two for protection and one for measurement. Each phase at the low-voltage side is also provided with three sets of CT, two for protection and one for measurement.

Automatic voltage regulator AVR
The main function of automatic voltage regulator (AVR) is to accurately control and adjust the generator terminal voltage and reactive power. It can quickly respond to the excitation voltage with a response time of several milliseconds. AVR selects dual channel system with manual emergency standby channel, which is the highest configuration of excitation system of UNITROL 5000 system at present.

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