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What are the intended applications for the GEYA GRI8-IW1 monitoring current relay?
The GEYA GRI8-IW1 is used for the overcurrent and undercurrent protection of electrical equipment.
What are the main function features of the GEYA GRI8-IW1?
The main features of the GEYA GRI8-IW1 are:
– True RMS measurement with high measurement accuracy.
– Overcurrent and undercurrent selection monitoring or simultaneous monitoring.
– The output contact is normally open or normally closed and can be set.
– Two sets of contact outputs, which can act separately and independently.
– 36mm wide, 35mm clamp rail installation.
What do the model numbers GRI8-IW1 and GRI8-IW2 signify for the GEYA GRI8-IW1 series?
The model and connotation are as follows:
– **GRI8:** GR18 Series
– **IW:** Current isolation monitoring type
– **1:** Monitoring current range of AC/DC 2mA-500mA 50/60Hz
– **2:** Monitoring current range of AC/DC 0.15A-15A 50/60Hz
What do the indicators and settings on the panel of the GEYA GRI8-IW1 represent?
The panel diagram for the GEYA GRI8-IW1 includes the following indicators and settings:
– **Over/under indication (Func):** Indicates the selected function.
– **Power up indication (Un/Rst):** A green LED that indicates the device is powered on.
– **Relay 1 indication (R1):** Indicates the status of Relay 1.
– **Relay 2 indication (R2):** Indicates the status of Relay 2.
– **Work mode setting (F):** A knob to select the work mode.
– **Over threshold setting (I>):** A knob to set the overcurrent threshold.
– **Power up delay setting (Ti):** A knob to set the power-up delay time.
– **Time delay setting (Tt):** A knob to set the tripping time delay.
– **Hysteresis setting (H):** A knob to set the hysteresis value.
– **Under threshold setting (I<):** A knob to set the undercurrent threshold.
What are the switch settings for the GEYA GRI8-IW1?
The switch settings on the GEYA GRI8-IW1 control its operational modes. The functions are determined by the position of the five switches (SW1 to SW5).
| Switch | Position | Function |
|---|---|---|
| SW1 | ON | Over or under |
| OFF | Over and under | |
| SW2 | ON | Only over (Valid when SW1=ON) |
| OFF | Only under (Valid when SW1=ON) | |
| SW3 | ON | Locking after over/under protection |
| OFF | Auto-reset after over/under protection | |
| SW4 | ON | 11-14/21-14 Normal closed |
| OFF | 11-14/21-14 Normal open | |
| SW5 | ON | Relay 1 and relay 2 operate simultaneously (This mode is defaulted when SW1=ON) |
| OFF | Relay 1 and relay 2 operate separately (Valid when SW1=OFF, R1(11,12,14)-Over, R2(21,22,24)-Under) |
How does the error setting work in ‘over and under’ mode on the GEYA GRI8-IW1?
When the GEYA GRI8-IW1 is in ‘over and under’ mode, if the under threshold setting value (I<) is set to be greater than the over threshold setting value (I>), the indicator lights Un/Rst and F will flash simultaneously. In this error state, the relay contacts are reset.
When the under setting value is adjusted to be less than the over setting value, the indicator light and the relay will be restored to their normal operational state.
What are the technical specifications of the GEYA GRI8-IW1?
The technical parameters for the GEYA GRI8-IW1 are as follows:
| Parameter | Value |
|---|---|
| Function | Monitoring current |
| Supply terminals | A1, A2 |
| Rated supply voltage | AC/DC 24-240V 50/60Hz |
| Monitoring current input terminal | E1, E2, E3, M |
| Monitoring current range (GRI8-IW1) | AC/DC 2mA-500mA 50/60Hz |
| Monitoring current range (GRI8-IW2) | AC/DC 0.15A-15A 50/60Hz |
| Rated insulation voltage | 500V |
| Hysteresis | Only over or under: 5%-50% adjustable; Over and under: fixed 5% |
| Supply indication | Green LED |
| Measurement error | <5% |
| Time delay | 0.3s-30s |
| Power up delay/Reset time | 1s-20s |
| knob setting accuracy | 10% |
| Output | 2xSPDT |
| Current rating | 5A/AC1 |
| Switching voltage | 250VAC/24VDC |
| Min. breaking capacity DC | 500mW |
| Output indication | Yellow LED |
| Mechanical life | 5×10^6 |
| Electrical life (AC1) | 5×10^4 |
| Operating temperature | -20°C to +55°C (-4°F to 131°F) |
| Storage temperature | -35°C to +75°C (-22°F to 158°F) |
| Mounting/DIN rail | Din rail EN/IEC 60715 |
| Protection degree | IP40 for front panel/IP20 terminals |
| Operating position | any |
| Overvoltage category | III |
| Pollution degree | 2 |
| Max. cable size (mm²) | solid wire max. 1×2.5 or 2×1.5 / with sleeve max. 1×2.5 (AWG 12) |
| Dimensions | 90mm x 36mm x 70mm |
| Weight | 100g |
| Standards | EN/IEC60947-5-1 |
Input Terminal Specifications:
| Model | Input terminal | Input monitoring current range | Input resistance | Overload capacity |
|---|---|---|---|---|
| GRI8-IW1 | E1-M | AC/DC 2mA-20mA 50/60Hz | 5Ω | Continuous input at 120% of maximum input. 1s at 150% |
| E2-M | AC/DC 10mA-100mA 50/60Hz | 1Ω | ||
| E3-M | AC/DC 50mA-500mA 50/60Hz | 0.2Ω | ||
| GRI8-IW2 | E1-M | AC/DC 0.15A-1.5A 50/60Hz | 0.05Ω | |
| E2-M | AC/DC 0.5A-5A 50/60Hz | 0.015Ω | ||
| E3-M | AC/DC 1.5A-15A 50/60Hz | 0.005Ω |
How do I interpret the function diagrams for the GEYA GRI8-IW1?
The function diagrams illustrate the behavior of the relay over time based on the monitored current and switch settings. Key elements in the diagrams are:
– **Un:** Represents the supply voltage being applied to the relay.
– **Over threshold:** The set current level above which an overcurrent fault is detected.
– **Under threshold:** The set current level below which an undercurrent fault is detected.
– **Hysteresis:** A range below the over threshold or above the under threshold that the current must pass through before the relay resets, preventing rapid switching.
– **Ti (Power up delay):** The delay time after the relay is powered on (Un) before it starts monitoring the current.
– **Tt (Tripping delay):** The time delay after the current crosses a threshold before the relay contacts change state.
– **LED indicators:** Lines representing the state of LEDs like Un/Rst, F (Over/Under Alarm), and R1/R2 (Relay status).
– **Relay contacts (e.g., 11-14/21-24):** Lines showing when the relay contacts are open or closed.
By following the monitored current line (the wave-like line labeled Un) and observing how the LED and relay contact lines change after the specified delays (Ti and Tt), you can understand the relay’s operation for each combination of switch settings.
How should the GEYA GRI8-IW1 be wired?
Follow the wiring diagram for proper installation:
1. **Power Supply (Un):** Connect the AC/DC 24V-240V power supply to terminals A1 and A2.
2. **Current Monitoring:** Connect the current circuit to be monitored through one of the input terminal pairs. Use E1-M, E2-M, or E3-M depending on the expected current range.
3. **Load Connection:** Connect the load or control circuit to the output relay contacts.
– **Relay 1:** Terminals 11 (common), 12 (normally closed), and 14 (normally open).
– **Relay 2:** Terminals 21 (common), 22 (normally closed), and 24 (normally open).
What is the safety caution for installing the GEYA GRI8-IW1?
The products must be installed by qualified electricians. All and any electrical connections of the product shall comply with the appropriate safety standards.
How should I dispose of the GEYA GRI8-IW1?
For disposal of electrical waste, all electrical waste should be disposed of in compliance with current WEEE regulations.
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