emergency cut- off loop; antenna security loop (carrier loop) telecom.

[GL]

Last not least the transmitter must be connected to the external 400V mains supply, to the emergency cut- off loop (mains interruption) and to the antenna security loop (carrier loop) which interrupts RF transmission in case of an open circuit.
Mains as well as the emergency cut- off loop as well as the carrier loop must be connected to the transmitters low voltage distribution situated in the lower part of the Control Rack

emergency cut- off loop - аварийная/запасная цепь выключения электр.???
antenna security loop - цепь передачи сигналов антенны? так и будет?

Заранее спасибо