H.V. Alternating Current Automatic Circuit Reclosers

1. Summarize CHZ–¡-12 Type H.V. Alternating Current Automatic Circuit Recloser is used in three-phase distribution system which is 50Hz AC and 10-12kV voltage. This product can open, break and superpose automatically in the expected opening, breaking and superposing order and work with breaking equipment at H. V. switch instrument , controlling and protecting itself, which can return to the right position or close automatically, so it can get power automatically without other controlling system. And this system can break and insulate fault quickly, in this way, it can reduce the scope of off-power to the least, so it™s the ideal instrument to rebuild the city and country power line. According to customer™s different needs, it can be fixed with insulating switch. 2. Main Technique Parameter Number Project Unit Value 1 Rated Voltage kV 12 2 Rated Insulation level Power Frequency Withstand Voltage(1min) Dry 42 Wet 34 Lightning Impulse Withstand Voltage(Peak Value) 75 3 Rated Normal Current A 630 400 200 4 Rated Short-Circuit Breaking Current kA 20 16 12.5 5 Rated Operating Order O-0.3s-CO-180s-CO 6 Rated Short Circuit Breaking Current Breaking Times Time 30 7 Rated Short-Circuit Making Current(Peak Value) kA 50 8 Rated Peak Withstand Current 9 Rated Short-Time Withstand Current 20 16 25 10 Rated Duration of Short Circuit s 4 11 Contact Opening Time at Rated Voltage ms 15-50 12 Contact Closing Time 25-50 13 Mechanical Endurance Time 10000 14 Rated Operating Voltage and Rated Assistant Circuit Voltage V ‰220 ‰110 ‰24 15 Energy Storing Time at Rated Voltage s ˆ10 16 CT Ratio A （ ）/5 Capacitance VA 15 17 PT Voltage Output V ‰220 ‰110 ‰24 Capacitance VV 600 18 Over Current Regulation A 2-10 19 Delay Time ms 40-850 20 Contact Closing Current A 18 21 Telecontrol Distance m 30

Engineering Branch with the registered capital of RMB1.5635 billion, a total asset of RMB 10.825 billion and the net assets RMB 6.097 billion. In addition, we hold Shanghai Waigaoqiao Power Generation Co., Ltd., Shanghai Chemical Industry Zone Cogeneration Co., Ltd. and invests in Shanghai Wujing No.2 Power Generation Co., Ltd., Shanghai Waigaoqiao No.2 Power Generation Co., Ltd., Shanghai Power Fuel Co., Ltd., Shanghai Electric Power Materials Co., Ltd. and Shanghai Electric Power Designing Co., Ltd. while managing commissioned Shanghai Wujing Power Generation Co., Ltd. We are the largest power producer in Shanghai with the total installed capacity of 3409.2MW (managing commissioned included) in which the capacity in terms of percentage of equity is 2809.2MW and wholly owned capacity 1609.2MW respectively. The annual generation of 2003 was 17.86 billion kW/h. We have a rich experienced management for operating large-scale electric power company with a staff of 4691..