Woonyoung WYR-OC Series Digital 3-Phase Overcurrent Relay (OCR 50/51)

Digital three-phase overcurrent relay (ANSI 50/51) for 2-CT or 3-CT connection with IEC and KEPCO time curves.

Key features

Two- or three-element overcurrent protection (2CT or 3CT)
IEC 60255 and KEPCO inverse-time curves plus definite time
Fault memory of operating current and operating time
RS-485 Modbus communication
Free-voltage auxiliary supply AC/DC 110-240 V

Specifications

Standard	IEC 60255, KEMC 1120, KEPCO
Aux. power	AC/DC 110-240 V free voltage (DC 110/220 V, 5 W), 50/60 Hz
Trip contact	1a, AC 250 V / 10 A
Thermal withstand	10 A continuous; 100 A for 10 s; 200 A for 1 s
Insulation resistance	> 100 MOhm at DC 500 V (IEC 60255-5)
Dielectric withstand	AC 2 kV for 1 min (IEC 60255-5)
Impulse withstand	5 kV, 1.2/50 us (IEC 60255-5)
Shock resistance	Approx. 30 G, 3 times in each of 3 directions
Vibration resistance	30 Hz, 0.4 mm double amplitude, 600 s in X, Y and Z
Operating temperature	-10 to +55 C
Storage temperature	-20 to +70 C
Degree of protection	IP52

WYR-OC2DC		Elements: OCR (50/51) x 2 \| Connection: 3P3W, 2 CT
WYR-OC3DC		Elements: OCR (50/51) x 3 \| Connection: 3P3W, 3 CT

Digital Protection RelaysWoonyoung

2 product codes available in this family

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Woonyoung WYR-OC Series Digital 3-Phase Overcurrent Relay (OCR 50/51)

Brand Woonyoung·Digital Protection Relays

Available part numbers (2)

WYR-OC2DC, WYR-OC3DC

How to order

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