Current and voltage monitoring relay TRM-30M - 1-phase, 30 A, with digital display

Product description

The TRM-30M is a single-phase digital relay designed to protect sensitive equipment against overcurrent, overvoltage and undervoltage .
The device allows precise adjustment of current limitation and delay , and displays the measured voltage and current values ​​on a two-line display. The device comes with a current transformer .

Main functions

• Overload protection: adjustable current 0.5 ... 30 A

• Overvoltage protection: activation at voltage > 250 V (fixed)

• Undervoltage protection: activation at voltage < 150 V (fixed).

• Voltage hysteresis: 5 V

• Voltage error delay: 2 s

• Voltage fault reset: 2 s

• Clear two-line LED display:

  • Top row - voltage and overcurrent

  • Bottom line - delay time and current

• LED status indication "OUT"

Operating principle

• When the power is turned on, the set overcurrent value and delay time appear on the display.

• The device monitors the voltage between phase and neutral and the current drawn from the network.

• If the set values ​​are exceeded, the relay goes into error state :

  • NO contact open, NC contact closed

  • The "OUT" LED goes out.

  • The corresponding display flashes.

Protective functions

• Overload (overcurrent): when the set current and time delay are exceeded .

• Overvoltage: when the voltage is above 250 V (automatic return when the voltage drops below 245 V).

• Undervoltage: at voltage below 150 V (automatic return after rising above 155 V)

Signal

• Upper display flashes: high or low voltage error

• Lower display flashes: high current error

• LED OUT: lights up during normal operation

Relay status

Use the address.

• Protection of single-phase sensitive equipment (motors, heaters, lighting).

• Current and voltage monitoring in industrial and domestic applications

• Precise limit and time delay settings for reliable operation