MILLIVOLT TRIP RELAY
		SELECTION GUIDE M200-MVU mVunder trip M200-MVO mV over trip M200-MVC mV combined trip TYPICAL APPLICATIONS The mV trip relays will accept DC millivolt signals from shunts, sensors and transducers. A common application is to protect equipment from over current in a DC charging system. For example using a 400A to 75mV shunt. The 75mV signal is fed to the M200-MVO if the customer wishes to ensure the current does not exceed 300 amps then the MVO trip would be set at 75 % (56.25mv). If the current goes above 300 Amps the relay would energise. As is common with all the M200 relays, on over units the relay energises when the input signal exceeds the trip point and on under units the relay de-energises when the input signal goes below the trip point. A red LED indicates the state of the relay, whilst a green LED indicates the condition of the power supply. OPTIONS 1.Adjustable time delay max 30 seconds 2.AC auxiliary in the range 577 to 480 volt 3.Calibration at temperature other than 23º C
			TECHNICAL SPECIFICATION INPUT Rated value mV dc l0-999.9mV dc Input Impedance 50k Ohm Source impedance 100 ohms max Overload 10 x Input continuous SETPOINT Range Over Adjustable 40% to 120% Range Under Adjustable 0% to 80% Repeatability Better than 0.5% of full span Time delay Adjustable 200 ms to 10 seconds Differential Fixed 5% AUXILIARY AC Voltage 115/230/400V ± 25% / 45-65 Hz / <2VA DC Voltage 24V (± 20% galvanically isolated) < 3 W WEIGHT & CASE SIZE Single units Approx. 0.4kg 55mm case Combined units Approx. 0.6kg 100mm case ORDERING INFORMATION Product Code Input Aux Freq Options M200-MVU 75mV 230V 50Hz Cal 40ºC