RET-425 | ZEG-ENERGETYKA

Produkty

RET-425
Voltage, time-delayed relay

Voltage relay with time-delay function is intendend to be used in protection systems. It allows to control the RMS value of sinewave of voltage with a frequency of 50 Hz. Digital technology provides high accuracy, stability and dependability.

Manuals, diagrams, technical details

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Product description

Protection set

27	undervoltage, time-delayed (RET-425P)
59	overvoltage, time-delayed (RET-425N)

Main features

one-phase measuring circuit
two types: undervoltage (-P) and overvoltage (-N)
measuring and continous diplaying of energising value
record of value of voltage during last disturbance
LED display and set of buttons in order to operation of the relay
optical indicating (with LED diodes) of pick-ups and trips and presence of auxilliary voltage
Relay output for pick-up signalling purpose (K1) and trip (K2, K3), watchdog or lack of aux. voltage purpose (K4) or blocked mode signalling (K5)
self-test of proper operation of relay
relay enclosure gives possibility to mount on 35 mm rail, surface mount or flush mount

RET-425 relay controls the RMS value of input voltage and compares it with setting value. The operation mode depands on type of relay. In overvoltage type (RET-425N), when RMS value of measured voltage exceeds the setting value, pick-up signal is generated and after set time-delay, trip contact closes. The undervoltage type (RET-435P) generates pick-up and trip when measured value drops below setting value.

DANE TECHNICZNE

Rated voltage U_n	100V or 220/230V AC/DC
Rated frequency f_n	50Hz
Rated auxilliary voltage U_p	24V DC, 48V – 60V DC, 110V – 230V DC/AC
Burden of analog inputs	≤0,5VA/input
Burden of auxilliary voltage supply	≤3W
Setting range of threshold voltage	(10÷200)V for U_n=100V (15÷300)V for U_n=220/230V
Accuracy of voltage input	1,5%
Relay pick-up time	≤60ms
Setting range of timer	(0÷99,9)s
Continously voltage withstand of voltage inputs	1,2 Urmax
10 sec voltage withstand of voltage inputs	1,4 Urmax
Relay outputs data
Max. breaking capacity by U=250V, DC
– resistive load	0,3A
– inductive load by L/R=40ms	0,12A
Max. breaking capacity by U=250V, 50Hz
– inductive load of cosϕ=0,4	3A
Continuous contact carry	5A
Ambient temperature	(268÷313)K/(-5÷40)°C
Relative humidity	≤ 80%
Ingress Protection degree	IP40
Weight	0,3kg
Dimensions (height x width x depth)	75 x 45x 120 mm
Electromagnetic compatibility according to	PN-EN 50263
Insulation according to	PN-EN 60255-5

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