1. Applied in line and feed outlet of 110kV and below 2. Realize protection, measuring low-voltage line and controlling breaker

GTL-84X Digital Line Protection Devices

GTL-842 digital line protection device, mainly used in 110kV and below the line and feed outlet, is implemented protection, measurement of low-voltage circuit and  controlling breaker.

Functional Configuration

According to different functions, GTL-84X series line protection and monitoring device can be divided into the following categories:

GTL-841 is integrated protection and monitoring device for the three-stage current protection.GTL-842 is integrated protection and monitoring device for the three-stage current power directional protection. GTL-843 is the device for the short line distance protection, and provided with all the features of GTL-842.GTL-844 is the device for fiber pilot wire protection, and provided with all the features of GTL-842.

 The detailed functional configuration as follows:

Classification	Options	GTL-842
	Three-current protection (which can take direction and anti-time)	√
	Speed over-current protection	√
	A three-phase reclosing	√
	Frequency load shedding protection	√
	Zero sequence current protection	√
	Overload protection	√
	Low voltage protection	√
	TV Break Detection	√
Operating circuit	Independent power supply with anti-lockout feature dancing circuit operation	√
	Control loop abnormal alarm function	√
Control Function	Yao volume collection of 16 letters, accident telesignalling	√
	Remote control circuit breaker division and	√
	IA, IC, P, Q, Uab, Ubc, Uca, f and other telemetry	√
	Switch statistics and closing times	√
	SOE alarm events	√
	Fault recorder function	√
On time	GPS on, the network time	√
Communication	Ethernet Network Interface	√

More Information: http://www.gtdl-tech.com