UserManual & Data sheet

SNV-EKL4Earth fault and short circuit indicator

Type: surface mounted

Optional:  

1. SNV-EKL4, normal type without RS485 and outside AC220V input.

2) SNV-EKL4, communication type, with RS485 ,Modbus protocol,and with AC220V power input.

 

Description

 SNV-EKL4 short circuit and earth fault indicator, it Widely used in various ring cabinets, high-voltage switch gear and cable branch box in power system, can accurately and reliably detect the fault section and fault type of power grid. the use of cable type short circuit and grounding fault indicator is an efficient way to check cable fault, and is an effective way to improve the operation level of distribution network and the efficiency of fault handling. the design uses electromagnetic induction, photoelectric conversion, signal optical fiber transmission and single chip microcomputer control technology to make fault alarm with high accuracy and strong anti-interference ability.

Equipped with fault remote transmission port, suitable for distribution network automation;  Battery low power alarm indication; Low-power design, high-capacity lithium battery power supply, long battery life (more than 8 years); external structure using card or lock design, the whole machine is easy to load and unload.

 

Function character:

1) Intelligent detection of short-circuit and ground fault and through the corresponding LED on the panel to indicate fault.

2)Monitor panel designed with button, it isConvenient for reset or test.

3)the pulse width time of fault current can be set to prevent incorrect fault indication caused by surge current.

4)It can reset and detect the remote fault indication device remotely.

5)It can provide switch volume for external devices through remote contact.

6)It canChoose the reset time after fault happen (when purchase, it need to tell factory to set,default 8hours).

7)Remote fault indicating can be made by external lamp.

8)It canChoose the short circuit alarm current (when purchase, it need to tell factory to set).

9)Earth fault alarm current set in factory

10)Low battery display and alarm through press the " Test/reset"  key by 3seconds.

Technology parameter

Voltage grade			3-40.5KV		Battery life			≥8 year
Frequency			50HZ/60HZ		Low voltage alarm of battery			≤2.7V
SHort circuit alarm current			150A~1200A		SHort circuit sensor fiber length			3Meter, or customized
Earthfault alarm current			20A~100A		Earth fault sensor cable length			3Meter,or customized
Alarm current accuracy			±10%		Load fluctuation and escape pulse time setting		SHort circuit	40ms,60ms,80ms,160ms (settable)
Rated frequency withstand voltage			2KV/1min				EArth fault
Relay contact capacity			≤95W		Work environment		Temperature	-40℃~+60℃
Reset time		Settable	4H/8H/24/36H				Humidity	≤95%RH
Working power	ER17505 Battery		3.6V/3500mAh		Use for cable diameter	ShOrt circuit CT(Fiber, Type S)	A	20mm~40mm, Normally
							B	300mm~70mm customized
Working current	Standby state		≤10μA			Earth fault sensor(Cable, type E)	A	60mm~100mm Normally
	WOrking state		≤1mA
Indicator protection level	Monitor panel		IP 40				B	80mm~130mm Customized
	SEnsor CT		IP 65