Delab Scientific - Earth Protection Relay, Digital Microprocessors

- Micro-processor based

- Cos φ and power factor info

- LED indication for individual step

- Auto C/K detection

- Auto or manual operation

- Auto detection of C.T. polarity

- Secondary current info

- Voltage & Frequency info

- THD-I and THD-V info

- Harmonic spectrum info up to 11th order (for voltage and current)

- Programmable over voltage alarm

- Dedicated alarm output *

- Dedicated exhaust fan output *

- Programmable software lock

- Flush mount

* Available for models: NV-8s and NV-14s only.

      Technical data

        Power supply                 	240VAC

        Rated current	        	../5A

        Rated frequency             	47 ~ 63Hz

        Output relay             		5A / 250VAC

        No voltage release              	< 40 ms

        Weight                      	approx. 750g

        Operating temp.             	0°C ~ +55°C

        Standard                    	IEC:61000-4-2/4-4/4-5/255-5:1

      Setting Range

	C/K value			0.02 ~ 1.00

	Cos φ				0.85(ind) ~ 0.95(cap)

	Switching program		P-0 ~ P-6 or auto custom

	Switching interval		2 ~60 sec.

	Re-connection time		OFF or 1 ~ 250sec.

	Voltage(V)			OFF or 20 ~ 100%

	THD(%)current(I)		OFF or 20 ~ 100%

	THD(%)voltage(V)		OFF or 2.0 ~ 20.0%

Power Factor Controller NV-6s,NV-8s,NV-14s