RET-325/REt-350 | ZEG-ENERGETYKA

Produkty

RET-325/REt-350
Voltage relays

Voltage relays dedicated to supervise the RMS value of sinewaved voltage of frequency 50 Hz or DC voltage. Relays construction ensures their high accuracy, stability and reliabilty.

Manuals, diagrams, technical details

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Product description

Protection set of RET-325

27/59

Under-/overvoltage, time-delayed

Protection set of REt-350

27/59

Under-/overvoltage, instanteneous

Main features

two-inputs measuring circuit based on voltage divider – for sine voltage (UAC) or direct voltage (UDC)
Undervoltage or overvoltage operation mode (selectable)
Optical visualisation (LED diodes) of pick-up, operation of relay or auxilliary voltage presence
Relay outputs of pick-up signalling (K1) or operation signalling (K2) – RET-325
2 relay outputs of operation signalling (K1, K2) – RET-350
35 mm rail mounting

RET-325

The relay supervises the value of measured voltage. If operation mode is set to „overvoltage”, the relay picks-up when measured voltage exceeds the treshold value. After preset time delay, trip (operation) signal is activated. If operation mode is set to „undervoltage”, the relay picks-up when measured voltage drops below the treshold value. After preset time delay, trip (operation) signal is activated.

RET-350

The relay supervises the value of measured voltage. If operation mode is set to „overvoltage”, the relay picks-up and instantenously generates trip (operation) signal when measured voltage exceeds the treshold value. If operation mode is set to „undervoltage”, the relay picks-up and instantenously generates trip (operation) signal when measured voltage drops below the treshold value.

TECHNICAL DATA

Rated measuring voltage U_n	48V, 100V, 110V, 220/230V, 400V AC/DC
Rated frequency	50Hz
Auxilliary voltage	110V – 230V DC/AC (50Hz)
Setting range of voltage threshold values	(1 ÷ 99)V for Un=48V (2 ÷ 198)V for Un=100V (3 ÷ 297)V for Un=110V (4 ÷ 396)V for Un=220/230V (5 ÷ 495)V for Un=400V
Accuracy of voltage inputs	1,5%
Relay response time:	≤100ms
Setting range of timer (RET-325)	(0÷9,9)s
Burden in measuring inputs	≤0,5VA/input
Burden in supply module	≤4W
Continuous measured voltage	1,2Un
Thermal withstand of voltage measuring inputs (10s)	1,5Un
Relay outputs data:
Max. breaking capacity by 250V DC
– resistive load	0,3A
– inductive load of L/R ≤40ms	0,12A
Max. breaking capacity by 250V, 50Hz
– inductive load, cosϕ=0,4	3A
Continuous contact carry	5A
Ambient temperature	(268÷313)K/(-5÷40)°C
Relative humidity	≤80%
Ingress Protection degree	IP40
Weight
RET-325	0,35kg
RET-350	0,3kg
Dimensions (height x width x depth)	75 x 45 x 130 mm
Electromagnetic compatibility according to	PN-EN 50263
Insulation according to	PN-EN-60255-5

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