Digital overvoltage relay with 3×3 digit LED display TRM-200

Three-phase current relay, for controlling / limiting 90-200 A load current, manufacturer TENSE (Turkey)

Digital overcurrent relays TRM-200 are designed to protect loads from damage caused by high current and also allow monitoring of their operation.

- 90-200 A (adjustable overcurrent value)
- 50% fixed current asymmetry
- adjustable fault delay time
- adjustable operating mode (automatic, semi-automatic, manual)
- When purchasing a TENSE brand current relay, you receive a ready-to-use device - the set includes current transformers.

Device usage and operating principle

1. Connect the device according to the wiring diagram.
2. After wiring, switch on the power. After switching on, the display shows the set values for 5 seconds.
3. Use the "A>" controller to set the overcurrent value. The set value is shown on the left display.
4. Use the "t" controller to set the delay time. The set value is also shown on the left display.

When the device is switched on:
- The relay is activated, the output contact switches to terminal 3 and the OUT indicator lights up.
- If the current exceeds the set overcurrent value (A>), the device starts counting the delay time and the ERR indicator lights up.
- After the set time has elapsed, the relay switches off, the contact switches to terminal 1 and the OUT indicator goes out.

Description

The TRM-200 series electronic current relay is designed to automatically disconnect devices when the maximum permissible current is exceeded.
It has programmable switching range, delay time and reset time settings.
There are 3 return-to-operation modes - manual, semi-automatic, automatic.

Recovery modes:

- Manual mode: In the event of an overcurrent fault, the device must be reset to its initial mode by pressing the Reset button. In this mode, the corresponding LED lights up.
- Semi-automatic mode: After an overcurrent fault, the system automatically resets three times, then waits for the device to be manually reset in the event of another fault. In this mode, the corresponding LED lights up.
- Automatic mode: the system automatically resets after each overcurrent fault. In this mode, the corresponding LED lights up.

Note: To change the mode, press and hold the SELECT button for 10 seconds. When the mode is changed, the corresponding LED indicator lights up.

Asymmetry 50% (fixed)

If the difference between the maximum and minimum phase currents exceeds 50%, the device enters asymmetry fault mode within 2 seconds.
(This protects the system from damage if a phase fails while the motor is running).

During an asymmetry fault:
- The display group of the two phases causing the fault flashes and the ERR indicator lights up.
- To exit asymmetry fault mode, the device must be reset manually.

Technical parameters:

- Operating voltage: 150-260 V AC.
- Operating frequency: 50/60 Hz
- Power consumption: < 6 VA
- Operating temperature: from -20 °C to +55 °C
- Display: 3x3 digits, 5 LEDs
- Overcurrent setting (A>): 90-200 A
- Delay time: 1 s - 200 s
- Connection type: terminal
- Contacts: 5 A / 250 V AC (active load)
- Wire diameter: 2.5 mm²
- Weight: max 250 g
- Mounting: on DIN rail
- Operating altitude: < 2000 m

Note : TRM-50, TRM-100, TRM-200 and TRM-300 can only be used with the included current transformers.

TRM-400 can be used with the 400/5 current transformer supplied with TRM-400.

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