An air pressure regulatingrelay is arranged in a circuit in the cabinet to cut the circuit in time when air leak happens in the cabinet body to make the air pressure in the cabinet too low.
柜内的电路中还装有气体压力调节继电器，以便在柜体漏气造成其内气压过低时及时切断电路。
2
It is proposed in this paper that a relayregulating loop be added in the hoist current signal of large power shovel so that rational coordination between hoist and crowd capacities can be obtained.