Huayi Elec. Apparatus Group - High Voltage Switchgear and Vacuum Circuit Breakers

Huayi Elec. Apparatus Group Co., Ltd. (HEAG), China, is a manufacturer of HV and LV switchgear equipment, and produces the full range of products, including automatic distribution switches under 110kV, their terminal devices, HV components for switchgear, electronic watt-hour meters, high voltage AC switchgear, and outdoor and indoor vacuum circuit breakers.

The company was founded in 1986 and has more than 1,300 employees, of which 26% are engineers and technicians. HEAG has established close cooperation with TOSHIBA, ILJIN Co., Zhejiang University and some power bureaus. HEAG has set up its network marketing points in over 160 cities and districts all over the country. The products not only sell well in China, but are also exported to places such as Japan, South East Asia, West Africa, Northern Europe, South America, etc.

KYN28-12 HIGH VOLTAGE AC SWITCHGEAR

This switchgear is used with 3.6kV to 12kV, three-phase, 50/60Hz AC networks for receiving and distributing power and also for control, monitoring and protection. It conforms to IEC 298, I EC 694, GB 3906, etc. Main features:

• The draw-out part (handcart) has an operation position and a test position where the locating and indicating devices assure security and reliability
• Handcarts with the same specification can be interchanged but different ones cannot
• Single stranded cable with a maximum of nine available in the cable chamber
• The voltage relief channel in each high-voltage chamber assures personal security
• Enclosure is completely made of aluminium-zinc plated

KYN61-40.5 HIGH VOLTAGE MOVEABLE AC SWITCHGEAR

This switchgear is mainly used in 33kV to 36kV, three-phase, 50/60Hz systems in power generation plants, substations and industrial and mineral enterprises to receive and distribute power with control, protection and monitor functions. Main features:

• According to the function classification, the cabinet body comprises four units: relay and meter chamber, circuit-breaker chamber, cable chamber
• Main circuit schemes: cable incoming and outgoing wire, aerial incoming and outgoing wire, bus connection, isolation, voltage transformer and lightning arrester, etc.

VS1 INDOOR AC HIGH VOLTAGE VACUUM CIRCUIT BREAKER

The VS1 indoor high voltage vacuum circuit breaker is an holistic, completely sealed indoor switch equipment with a small volume and compact structure. It is suitable for 12kV, three-phase, 50Hz AC power systems and with frequent use to control and protect lines and electric equipments.

ZW20A-12 OUTDOOR AC HIGH VOLTAGE VACUUM CIRCUIT BREAKER

The ZW20A-12 outdoor AC high voltage vacuum circuit breaker is used to break and close load current, over-load current and short-circuit current in a 12kV, three-phase, 50Hz AC power system. It is suitable for substations, industrial and mining establishments, rural power networks and occasions with frequent operation to protect and control.

• Rated voltage: 12kV
• Rated frequency: 50Hz
• 1 min P.F. withstand voltage: between phases, 42kV (to earth), 49kV (gaps)
• Lightning impulse withstand voltage peak: 75kV (phase to phase, to earth), 85kV (gaps)
• Rated current: 630/1,000A
• Rated short-circuit breaking current: 12.5/16/20/25kA
• Rated short-circuit closing current peak: 31.5/40/50/63kA
• 4s rated short-time withstand current: 12.5/16/20/25kA
• Rated withstand current peak: 31.5/40/50/63kA

ZW37-40.5 OUTDOOR AC HIGH VOLTAGE VACUUM CIRCUIT BREAKER

The ZW37-40.5 outdoor AC high voltage vacuum circuit breaker is mainly used to break and close load current, over-load current and short-circuit current in outdoor, 40.5kV, three-phase, 50/60Hz AC power systems. It is also suitable for frequent operation.

• Rated voltage: 40.5kV
• 1min P.F. withstand voltage: between phases 95kV (to earth), 115kV (gaps)
• Lightning impulse withstand voltage peak: 185kV
• Rated current: 630/1,250/1,600/2,000A
• Rated short-circuit breaking current: 20/25/31.5kA
• Rated short-circuit closing current: 50/63/80kA
• Rated short-time withstand current: 20/25/31.5kA
• Rated withstand current peak: 50/63/80kA