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

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

Digital overcurrent relays TRM-200 are designed to protect loads from damage caused by high currents, while allowing monitoring of 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 - current transformers included.

Device use and operating principle

1. Connect the device according to the electrical diagram.
2. Once the wiring is complete, connect the device to the mains. After switching on, the set values will be displayed on the screen for 5 seconds.
3. Use the "A>" knob to set the overcurrent value. The set value is displayed on the left screen.
4. Use the "t" knob to set the delay time. The set value is also displayed on the left screen.

When the device is switched on:
- The relay switches 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 switches 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 shutdown of equipment when the maximum permissible current is exceeded.
It has a programmable switching range, the ability to set a delay time and a return time.
There are 3 modes for returning to operating status - MANUAL, SEMI-AUTOMATIC, AUTOMATIC.

Return modes:

- Manual mode: After an overcurrent fault, the device must be reset by pressing the Reset button. In this mode, the corresponding LED is illuminated.
- Semi-automatic mode: The system automatically resets three times after an overcurrent fault, then waits for a manual reset for the next fault. In this mode, the corresponding LED is illuminated.
- Automatic mode: The system automatically resets after each overcurrent fault. In this mode, the corresponding LED is illuminated.

Note: To change the mode, hold down the SELECT button for 10 seconds. When the mode is changed, the corresponding LED will light up.

Asymmetry 50% (fixed)

If the difference between the largest and smallest phase current exceeds 50%, the device enters asymmetry fault mode within 2 seconds.
(This prevents system damage in case of phase failure during motor operation).

When an asymmetry fault occurs:
- The indicator group of the two phases that caused the fault flashes and the ERR indicator lights up.
- To return from asymmetry fault mode, the device must be manually reset.

Technical parameters:

- Operating voltage: 150-260 V AC
- Operating frequency: 50/60 Hz
- Power: < 6 VA
- Operating temperature: -20 °C to +55 °C
- Indicator: 3x3 digits, 5 LED
- 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
- Installation: DIN rail
- Operating altitude: < 2000 m

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

The TRM-400 model can be used with the 400/5 current transformer included with the TRM-400 model.

Basic

Protection class IP

30

Lifespan

10 years

Technical specifications

Number of phases

3

Rated operating voltage

220V

Rated current

5A

Rated power

3W

Minimum operating temperature

-20 degrees

Maximum operating temperature

55 degrees.

Overall dimensions

Length

85 mm

Height

75 mm

Width

44 mm

User features

Delay time

1 s - 200 s

Installation

DIN+screws

Range

90-200 A