GEYA GRLE8-01 (01) PDF Document

Applications:

The GEYA GRLE8-01 is used for monitoring and measuring residual current in single-phase or three-phase power systems.

Function Features:

A type true RMS measurement.

ZCT detection.

User selectable trip time delay and leakage current levels.

Test and Reset via front panel or remote connection.

1xSPDT relay output.

DIN rail mounting.

The model and connotation are broken down as follows:

GRLE8: Series Designator

01: Design Number

A265: Rated control supply voltage, which is AC85V-265V

The front panel of the GEYA GRLE8-01 includes the following:

Un (green): Supply indication light.

25% 50% 75% T (yellow): Leakage current level indication lights.

Control Output(Trip) Indication(red): Indicates a trip condition.

Leakage current setting value (IΔn) dial: A rotary switch to set the leakage current trip level in Amperes (A).

Trip time delay (Δt) dial: A rotary switch to set the trip time delay in seconds (s).

T/R button: A button used for testing and resetting the relay.

The LED lights on the front panel indicate the following statuses:

LED ① (25%): For leakage current level ≥25% of the set value, this LED is continuously ON.

LED ② (50%): For leakage current level ≥50% of the set value, this LED is continuously ON.

LED ③ (75%): For leakage current level ≥75% of the set value, this LED is continuously ON.

LED ④ (T): This is the Control Output (Trip) Indication. It turns on when the relay trips.

At ZCT (Zero-Current Transformer) error condition, LEDs ①, ②, ③, and ④ are continuously blinking.

Testing and resetting can be performed in two ways:

1. By pressing the T/R button on the front of the unit.

2. For remote testing and resetting, by short-circuiting the T/R and C terminals.

The reset mode is selected based on the connection of the Y1-C terminals.

Manual Reset Mode:

To operate in manual reset mode, disconnect the Y1-C terminals. When the leakage current (IΔ) exceeds the set trip level, the relay trips after the set time delay (Δt). The trip output (terminals 11-14) remains active until the T/R button is pressed or the T/R-C terminals are shorted.

Auto Reset Mode:

To operate in auto reset mode, short circuit the Y1 and C terminals. When the leakage current (IΔ) exceeds the set trip level, the relay trips after the set time delay (Δt). The trip output (terminals 11-14) will automatically deactivate once the leakage current drops below the reset level.

Important Notes:

1. If the leakage current exceeds 5 times the set value, the relay trips instantaneously, irrespective of the set trip time delay.

2. When the leakage current setting (IΔn) is set to 30mA, the trip time delay (Δt) is forced to be 0 (instantaneous trip).

To wire the GEYA GRLE8-01 with an MCCB (Q2) that has a UV trip coil (MN):

1. Connect the power supply (N, L1, L2, L3) through a main breaker (Q1).

2. Pass the phase conductors (L1, L2, L3) and the neutral conductor (N) through the Zero-Current Transformer (ZCT).

3. Connect the ZCT to the S1 and S2 terminals of the GRLE8-01 relay.

4. Provide the control supply voltage (Un) to terminals A1 and A2 of the relay.

5. Wire the trip circuit: Connect one side of the power supply to the common trip terminal (11) of the relay. Connect the normally closed terminal (12) of the relay to the UV trip coil (MN) of the MCCB (Q2). Connect the other side of the UV trip coil to the other side of the power supply. This way, when the relay trips, it opens the circuit to the UV coil, causing the MCCB to trip.

6. Connect the load after the MCCB (Q2).

7. For remote reset/test, connect terminals Y1, T/R, and C as required for the selected reset mode.

To wire the GEYA GRLE8-01 with an MCCB (Q2) that has a shunt trip coil (MX):

1. Connect the power supply (N, L1, L2, L3) through a main breaker (Q1).

2. Pass the phase conductors (L1, L2, L3) and the neutral conductor (N) through the Zero-Current Transformer (ZCT).

3. Connect the ZCT to the S1 and S2 terminals of the GRLE8-01 relay.

4. Provide the control supply voltage (Un) to terminals A1 and A2 of the relay.

5. Wire the trip circuit: Connect one side of the power supply to the common trip terminal (11) of the relay. Connect the normally open terminal (14) of the relay to the shunt trip coil (MX) of the MCCB (Q2). Connect the other side of the shunt trip coil to the other side of the power supply. This way, when the relay trips, it closes the circuit to the shunt coil, causing the MCCB to trip.

6. Connect the load after the MCCB (Q2).

7. For remote reset/test, connect terminals Y1, T/R, and C as required for the selected reset mode.

Please observe the following notes for wiring and operation:

1. To operate in manual reset mode, disconnect terminals Y1-C. To operate in auto reset mode, short circuit terminals Y1 and C.

2. The cable connecting the ZCT (Zero-Current Transformer) and the product should be a shielded cable or a twisted pair cable with a length of ≥ 1m.

3. The cable for remote control of the “Test/Reset” function (terminals T/R and C) should be ≤ 10m.

The dimensions of the GEYA GRLE8-01 relay are:

Height: 90 mm

Width: 36 mm

Depth: 70 mm (including front panel controls)

The mounting hole diameter is 4.2 mm.

The Zero-Current Transformers (ZCTs) must be purchased separately. The available types and their dimensions are as follows:

Note: Please refer to the ZCT datasheet for detailed technical parameters.

The product must be installed by qualified electricians. All and any electrical connections of the time relay shall comply with the appropriate safety standards.