1. Introduction
The NUZEZCJG EAPDX-40/63 is a versatile Din Rail mounted protective device designed to safeguard electrical circuits and connected equipment from various power anomalies. It integrates over voltage, under voltage, and over current protection functions, along with real-time voltage and current monitoring. This device is suitable for 220V, 50Hz/60Hz systems and is available in 40A and 63A variants.
This manual provides essential information for the safe installation, operation, and maintenance of your protective device. Please read it thoroughly before use.
2. Safety Information
WARNING: Electrical shock hazard. Installation and maintenance should only be performed by qualified personnel.
- Always disconnect power before installing or servicing the device.
- Ensure proper wiring according to local electrical codes and the provided diagrams.
- Do not operate the device if it appears damaged.
- This device is designed for indoor use in a dry environment.
- Verify that the device's rated voltage and current match your application requirements.
3. Product Overview
The EAPDX-40/63 protective device features a clear digital display for voltage and current, along with intuitive buttons for setting parameters. The device is designed for easy mounting on a standard Din Rail.
Figure 3.1: Front panel and function setting overview of the EAPDX-40/63 device. It shows the Voltage Display, Current Display, Power On/Off button, and UP/DOWN/SET buttons for parameter adjustment. The diagram also illustrates input (IN) and output (OUT) terminals.
Key Features:
- Under Voltage Protection: Adjustable from 140V to 200V.
- Over Voltage Protection: Adjustable from 240V to 300V.
- Over Current Protection: Adjustable from 1A to 40A (for 40A model) or 1A to 63A (for 63A model).
- Reconnect Time (Delay On Time): Adjustable from 1s to 300s.
- Voltage Meter: Real-time display of circuit voltage.
- Ammeter: Real-time display of circuit current.
- Relay Recovery Delay: Adjustable from 1s to 300s.
- Overcurrent Recovery Delay: Adjustable from 1s to 300s.
4. Specifications
Figure 4.1: Technical parameters and setting ranges.
| Parameter | Value/Range |
|---|---|
| Rated Voltage | 220V AC |
| Frequency | 50Hz/60Hz |
| Overvoltage Trip Value | 240V - 300V (Adjustable) |
| Undervoltage Trip Value | 140V - 200V (Adjustable) |
| Overcurrent Trip Value | 1A - 40A / 1A - 63A (Adjustable, depending on model) |
| Reset/Start Delay | 1s - 300s (Adjustable) |
| Relay Recovery Delay | 1s - 300s (Adjustable) |
| Overcurrent Recovery Delay | 1s - 300s (Adjustable) |
| Voltage/Current Error | ±5% |
| Installation | Din Rail Mount |
| Model Number | EAPDX-40/63 |
5. Setup and Installation
The EAPDX-40/63 device is designed for installation on a standard 35mm Din Rail within an electrical enclosure.
Installation Steps:
- Power Disconnection: Before starting, ensure that the main power supply to the circuit where the device will be installed is completely disconnected and locked out.
- Mounting: Clip the device onto a standard 35mm Din Rail. Ensure it is securely fastened.
- Wiring:
- Connect the incoming live (L) and neutral (N) wires to the "IN" terminals at the top of the device.
- Connect the outgoing live (L) and neutral (N) wires to the "OUT" terminals at the bottom of the device, leading to the protected load.
- Ensure all connections are tight and secure to prevent loose contacts and overheating.
- Initial Power-Up: After verifying all connections, restore power to the circuit. The device's display should illuminate, showing the current voltage and current readings.
Figure 5.1: Example of EAPDX-40/63 devices installed on a Din Rail, illustrating the input (IN) and output (OUT) terminals.
6. Operating Instructions and Function Settings
The device displays real-time voltage and current. To access and modify protection parameters, use the SET, UP (▲), and DOWN (▼) buttons.
Entering Setting Mode:
- Press and hold the SET button for more than 3 seconds to enter the setting state. The display will show "P-1" (Overvoltage Setting).
Adjusting Parameters:
- Once in setting mode, use the UP (▲) and DOWN (▼) buttons to navigate through the different parameter settings (P-1 to P-6).
- Press the SET button briefly to select a parameter for adjustment. The current value will flash.
- Use the UP (▲) and DOWN (▼) buttons to change the value.
- Press SET again to confirm the new value and move to the next parameter, or wait a few seconds for the device to automatically save and exit setting mode.
Parameter List:
- P-1: Overvoltage Setting (240V-300V) - Set the upper voltage limit. If the voltage exceeds this, the device will trip. "OFF" disables this protection.
- P-2: Undervoltage Setting (140V-200V) - Set the lower voltage limit. If the voltage drops below this, the device will trip. "OFF" disables this protection.
- P-3: Overcurrent Setting (1A-40A/63A) - Set the maximum current limit. If the current exceeds this, the device will trip. "OFF" disables this protection.
- P-4: Reset/Start Delay (1s-300s) - Time delay before the device reconnects after a voltage fault (over/under voltage).
- P-5: Relay Recovery Delay (1s-300s) - Time delay for the relay to recover after a trip.
- P-6: Overcurrent Recovery Delay (1s-300s) - Time delay before the device reconnects after an overcurrent fault.
To exit the setting mode without saving changes, simply do not press any button for several seconds, and the device will revert to normal operation.
7. Maintenance
The EAPDX-40/63 protective device requires minimal maintenance. Regular inspection can help ensure its continued reliable operation.
- Periodic Inspection: Visually inspect the device and its wiring connections periodically for any signs of damage, loose connections, or discoloration.
- Cleaning: If necessary, gently clean the exterior of the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure power is disconnected before cleaning.
- Function Test: Periodically test the protection functions by simulating fault conditions (if safely possible and recommended by a qualified electrician) to ensure the device trips as expected.
8. Troubleshooting
If you encounter issues with your EAPDX-40/63 protective device, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | No power supply; incorrect wiring; device fault. | Check main power supply. Verify wiring connections. If power is present and wiring is correct, the device may be faulty. |
| Device trips frequently. | Actual over/under voltage or over current condition; sensitive settings. | Check the connected load and power supply for actual faults. Review and adjust the over/under voltage and over current settings (P-1, P-2, P-3) to appropriate levels for your application. |
| Device does not trip during fault. | Protection settings are "OFF" or set too high/low; device fault. | Verify that protection settings (P-1, P-2, P-3) are enabled and set to appropriate values. If settings are correct, the device may be faulty. |
| Display shows incorrect readings. | Wiring issue; device fault. | Check wiring connections for proper contact. Note that there is a ±5% error margin. If readings are significantly off, the device may be faulty. |
| Cannot enter setting mode. | SET button not held long enough; button malfunction. | Ensure the SET button is pressed and held for at least 3 seconds. If the issue persists, the button may be faulty. |
If the problem persists after attempting these solutions, please contact customer support.
9. Warranty and Support
Specific warranty details for the NUZEZCJG EAPDX-40/63 protective device are typically provided at the point of purchase or within the product packaging. Please refer to your purchase documentation for warranty terms and conditions.
For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact your retailer or the manufacturer directly. Contact information can usually be found on the product packaging or the seller's website.