Description
DIN rail mounting protection relays for use in single and three phase systems. Available in 55mm x 112mm or 100 x 112mm DIN rail cases
Selection Guide
| M200-MVU | mV under trip |
| M200-MVO | mV over trip |
| M200-MVC | mV combined under & over 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 400 Amp / 75mV. The 75mV signal is fed to the M200-MVO, if the customer wishes to ensure that the current does not exceed 300 amps, then the MVO trip would be set at 75% (56.25mV). If the current went above 300Amps the relay would energise. As is common with all M200 relays, on over units the relay energises when the input signal exceeds the trip point. 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.
Technical Specifications
| INPUT | |
| Rated value mV DC | 10-999.9mV DC |
| Input Impedance | 50kOhm |
| 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 200mS to 10 seconds |
| Differential | Fixed 5% |
| AUXILIARY | |
| AC Voltage | 115/230/400V ±25% / 45-65Hz/<2VA |
| DC Voltage | 24 volt (±20% / galvanically isolated)<3 watt |
| WEIGHT&CASE SIZE | |
| Single Units | Approx 0.4kg. |
| Combined Units | Approx 0.6kg. 100mm case |
Ordering Information
| Product Code | Input | Aux | Freq | Options |
| M200-MVU | 75mV | 230V | 50Hz | Cal 40ºC |
Options
| 1 | Adjustable time delay: max 30 seconds |
| 2 | AC auxiliary in range 57.7 to 480 volt |
| 3 | Calibration at temperature other than 23ºC |
Connection Diagrams
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