Analysis and Improvement of Under-voltage Protection of Flameproof Switch in Mining High-voltage Electric-network
Zou You-ming · Colliery Mechanical & Electrical Technology · 2008
The paper discusses the problems occurred in the under-voltage protection in mining high-voltage electric-network,analyses the choices between time-delay and instantaneous under-voltage protection as well as the determination of delayed time.Three feasible technical schemes of time-delay under-voltage protection are introduced.