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

Three-phase current relay for load current control / limiting in the range 90-200 A, manufactured by TENSE (Turkey)

TRM-200 digital overcurrent relays are designed to protect loads from damage caused by high currents, while providing operational monitoring.

- 90-200 A (adjustable overcurrent value)
- 50% fixed current asymmetry
- Adjustable error delay time
- Adjustable operating mode (automatic, semi-automatic, manual)
- When you purchase a TENSE brand current relay, you get a ready-to-use device - current transformers are included in the kit.

Device usage and operating principle

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

When the device is turned on:
- the relay turns on, 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.
- when the set time has elapsed, the relay turns off, the contact switches to terminal 1 and the OUT indicator goes out.

Description

The TRM-200 series electronic current relay is designed for automatic disconnection of devices if the maximum permissible current is exceeded.
It has programmable switching range, delay time, and auto-reset time settings.
There are 3 return-to-operation modes - MANUAL, SEMI-AUTOMATIC, AUTOMATIC.

Reset modes:

- Manual mode: After an overcurrent fault, the device must be reset by pressing the Reset button. In this mode, the corresponding LED indicator lights up.
- Semi-automatic mode: After an overcurrent fault, the system automatically resets three times, then waits for a manual reset for the next 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, hold the SELECT button pressed for 10 seconds. When the mode is changed, the corresponding LED indicator lights up.

Asymmetry 50% (fixed)

If the difference between the largest and smallest phase current exceeds 50%, the device enters asymmetry error mode within 2 seconds.
(This prevents system damage if a phase fault occurs during motor operation.)

During an asymmetry error:
- When both phases causing the error are displayed, the display group flashes and the ERR indicator lights up.
- To exit asymmetry error 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 (resistive load)
- Wire diameter: 2.5 mm²
- Weight: max. 250 g
- Installation: 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 a 400/5 current transformer, which is included with TRM-400.

Basic