Crompton 252-PBT4-000650 | DC millivolt relay -Rờ le bảo vệ điện áp DC High trip 40 to 120% Input 47-72 MVDC, Aux 24 VDC option, T/Delay 0-2-1 sec

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Rờ le bảo vệ điện áp DC Crompton 252-PBT4-000650 | DC millivolt relay

(High trip 40 to 120% Input 47-72 MVDC, Aux 24 VDC option, T/Delay 0-2-1 sec)

Crompton Instruments

Model No. 252-PBT4

Monitored
INPUT
            48-72 MILLIVOLTS DC
MILLIVOLT TRIP HIGH TRIP 40 TO 120%

A.N.S.I. Device No. 74

Relay On Trip
                       De- Energize
Contract Rating 5A 240V 50/60Hz & 24V DC

TIME DELAY 0.2 TO 1.0 SECONDS
AUXILIATY 230V 50/60HZ AC 9= L, 10= N

252-PBT4-000560

2002024614     6757A/001     G05



Specification – DC Millivolts/Thermocouple 

DC input	10mV, 50mV, 60mV, 75mV, 100mV, 150mV
Input impedance	50KΩ
Source impedance	100Ω maximum
Thermocouple	Types J, K, R, S, T 10 to 50mV
Thermocouple TBP	Thermocouple break protection upscale drive as standard
Thermocouple CJC	Cold junction compensation available on request
Thermocouple overload	10 x rating continuously
Nominal frequency	50/60Hz
Voltage burden	3VA maximum
Voltage overload	1.2 x rating continuously 1.5 x rating for 10 seconds
Set point repeatability	>0.5% of full span
Differential (hysteresis)	Pre-set at 1% Values 1 to 15% available on request
Trip level adjustment	Low trip: 0 to 80% High trip: 40 to 120%
Time delay adjustable	0 to 10 seconds
AC auxiliary supply voltage	100V, 110V, 120V, 220V, 240V, 480V, +/- 20%
DC auxiliary supply voltage	12V, 24V, 48V, 110V or 125V, +/- 20% Including ripple
Auxiliary voltage burden	4VA (max)
Output relay	2-pole change over
Relay contact rating	AC: 240V 5A non inductive DC: 24V 5A resistive
Relay mechanical life	0.2 million operations at rated loads
Relay reset	Automatic
Operating temperature	0oC to +60oC (0oC to +40oC for UL models)
Storage temperature	-20oC to + 70oC
Temperature co-efficient	0.05% per oC
Interference immunity	Electrical stress surge withstand and non-function to ANSI/IEEE C37 90a
Enclosure style	HIN-rail with wall mounting facility
Material	Flame retardant polycarbonate/ABS
Enclosure integrity	IP50
Dimensions	55mm x 70mm x 112mm (WxHxD)
Weight	0.4Kg approx.