△m:由于电流互感器变比未完全匹配产生的误差,一般取0.1 在工程实用整定计算中可选取Idzmin=(0.3~0.6)Ie/n。 2)比率制动系数K按最大外部短路电流下差动保护不误动的条件,计算最大制动系数K=KkKfzqKtxKe 式中:Ktx:电流互感器的同型系数,Ktx=0.5 Kk:可靠系数,取2~3 Ke:电流互感器的比误差,取0.1 Kfzq:...
Care houseElectric powerBatteryInverterPhotovoltaic generationThe electric power is a very important energy source for assistive equipment in care houses, such as a home elevator, electrically powered bed, air-conditioner and mechanical respirator, which are operated by electricity. An electric power back...
12000 BTU Portable Air Conditioner With R410A Refrigerant For 45 sqm Room Size $160.00 - $180.00 Min. order: 200 units Air Dryer Whole House Small Portable Dehumidify Portable Home Dehumidifier $57.00 - $63.00 Min. order: 100 units
PURPOSE: An electric heater for an air conditioner of a vehicle is provided to increase heating capacity and heat conductivity by preventing infiltration of impurities, and to improve heat transfer efficiency by brazing the radiating fin into the heating unit supporting plate embedding the heating unit...
9. Just plug the saver into the wall socket closest to the meter,one signal phase household require one Power Saver. 10. Suiltable for air conditioner,heating device, washing machine,TV,Refriderator,lamp and other home appliances. 11. Applicable for family, bar, ...
Power type electric air conditioner series联系我们 留言 提交 产品详情 ●Compact overall structure, small size, light weight and easy installation can effectively enlarge the space inside the vehicle ●Simple and safe protection shape, single channel design make unit repair and maintenance easy and ...
常规变电站的二次回路有两种:直流回路和交流回路。直流回路的功能:控制、保护逻辑、信号。交流回路的功能:保护、测量、计量。 到了智能变电站时代,一次设备与保护、测控之间的电缆被光缆取代,电缆中传输的直流信号(正电压/负电压/地电压)和交流信号(CT、PT二次电流、电压)被网络中传输的报文取代,过去用于实现保护逻...
on/off Grid 3000W 3kw 5kw 5000W Home Solar Photovoltaic Power PV Panel Energy System for House Electricity Power with Inverter LiFePO4 Lithium Battery US$500.00-1,999.00 1 Piece (MOQ) 5kwh/5kVA/10kw/20kw/100kw/550W Solar Tied PV Photovoltaic Energy Storage Hybrid Ho...
Supplier Homepage Products bus air conditioner roof-mount Electric Mini Bus Air Conditioner Battery Power with Compressor Exhaust Hose Hot Searches Auto System Air Brake Auto Air Car Air Compressor Bus Air Conditioner Car Air Conditioner System Bus Air Conditioning...
通用电气公司(简称GE)的历史可追溯到托马斯·爱迪生,他于1878年创立了爱迪生电灯公司。1892年,由老摩根出资把爱迪生通用电气公司、汤姆逊-豪斯登国际电气公司等三家公司合并组成。 在两次世界大战中,这家公司大发战争财,获得了迅速发展。第一次世界大战后,该公司在新兴的电工技术部门--无线电方面居于统治地位,1919年成...