Repeater Compositions / ISDB-T Digital TV Broadcasting Relay Systems

Product code: 6563CD

Outline

This equipment is arrester board of AC200V of the relay station transmission equipment. This is prevented being destroyed by the thunder.

Structure

JIS rack mounting type
External size: 480(W) x 99(H) x 450(D)mm (Excluding protrusions)
Mass: 11kg or less

Specification

Input	Arrester	GL-L2F by OTOWA Electric Co., Ltd GL-L2G by OTOWA Electric Co., Ltd
	Rating voltage	220V
	Maximum permissible voltage	260V
	Discharge Tolerated dose (8/20μs)	20kA 2times
Use conditions		Continuous use
Environmental requirements	Temperature	-10°C to +45°C (Range for in-spec)
		-20°C to +60°C (Range for spec restorable)
	Humidity	45% to 90%RH (Without dew.)

Function

This equipment mounts the arrester of AC200V by two methods. The arrester is mounted between live-playground, live-neutral, and neutral-grandeur at one power supply method. The arrester uses the ZnO element with an excellent non-straight-line-resistance characteristic in which the zinc oxide etc. is assumed to be a principal ingredient. Moreover, it is a plug-in structure, and it is possible to exchange it from the front side easily. The watching check is possible from the transparent window for the check with built-in the separation device.

Operation explanation

This equipment is composed of the terminal stand for the input and the terminal stand for the output. It is connected from the terminal stand for the input with each arrester, and it is connected with the terminal stand for the output. The power supply of the relay broadcasting system is protected from a thunder surge, a switching surge, and a multiple thunder. Because the arrester between grandeur is built-in the series gap, only when serge invades, it is impressed to the element. Moreover, when the element of the arrester between methods is deteriorated, the device that automatically separates the element from the circuit is built into.