1. Introduction
This manual provides detailed instructions for the safe and effective operation of the KUSAM-MECO KM-582 Digital RCD (ELCB) Tester. Please read this manual thoroughly before using the device to ensure proper functionality and to prevent potential hazards.
Figure 1: KUSAM-MECO KM-582 Digital RCD (ELCB) Tester. This image shows the front panel of the KM-582 tester, displaying its LCD screen, control buttons, and rotary switch.
2. Safety Information
Important Safety Precautions:
- Always adhere to local and national safety regulations.
- This device is rated CAT III 600V. Do not exceed these limits.
- Ensure the device is in good working condition before each use. Do not use if damaged.
- Never attempt to test live circuits without proper training and safety equipment.
- Fuse protection is integrated. If a fuse blows, replace it with the specified type and rating.
- Over-range indication will alert you if measurements exceed the device's capabilities.
- Disconnect the test leads from the circuit before changing functions or ranges.
3. Key Features
Figure 2: KM-582 Features Overview. This diagram highlights key features such as the LCD backlight, fuse protection, auto power-off function, and buzzer indication for disconnect.
- Clear LCD Display: 1000-count LCD with backlight for visibility in various lighting conditions.
- Enhanced Safety: CAT III 600V compliance, fuse protection, and over-range indication.
- Auto Functions: Auto power-off to conserve battery and auto ramp for simplified testing.
- Audible Alerts: Buzzer indications for disconnects, misoperation, and power-off.
- Data Hold: Freeze measurements for easy recording and review.
4. Package Contents and Setup
4.1. Unpacking and Inspection
Carefully unpack the device and inspect for any signs of damage. If any damage is found, contact your supplier immediately.
4.2. Included Components
Figure 3: Included Accessories. This image displays the accessories that come with the KM-582 tester, including the carrying case, outer cover, test leads, and power connection leads.
- KUSAM-MECO KM-582 Digital RCD (ELCB) Tester
- Test Leads (Red, Green, Blue)
- Power Connection Leads
- Carrying Case
- Outer Cover
- Belt
- Instruction Manual (this document)
4.3. Battery Installation
The KM-582 is battery powered. Refer to the battery compartment on the rear of the device for installation. Ensure correct polarity. Replace batteries when the low battery indicator appears on the LCD.
4.4. Connecting Test Leads
Connect the test leads securely into the corresponding input terminals on the tester. Ensure a firm connection to prevent inaccurate readings or hazards.
Figure 4: Test Lead Connection Example. This image illustrates how to correctly connect the red, green, and blue test leads into the designated ports on the KM-582 tester.
5. Operating Instructions
5.1. Powering On/Off
Turn the rotary switch to any desired function (e.g., X1, X1/2) to power on the device. Turn it to "OFF" to power off. The device also features an auto power-off function to save battery life after a period of inactivity.
5.2. RCD (ELCB) Testing
- Select Test Current (IΔn): Press the IΔn button to cycle through available RCD trip currents (e.g., 10mA, 20mA, 30mA, 100mA, 300mA, 500mA).
- Select Multiplier: Use the rotary switch to select the desired current multiplier:
- X1/2: Tests at half the rated trip current. The RCD should not trip.
- X1: Tests at the rated trip current. The RCD should trip within the specified time.
- X5: Tests at five times the rated trip current (for specific RCD types). The RCD should trip faster.
- AUTO RAMP: Gradually increases the test current until the RCD trips, determining the actual trip current.
- Select Phase Angle: Press the PHASE/UL button to select the desired phase angle (0° or 180°).
- Select Connection Type: Press the L-N/L-PE button to select between Line-Neutral or Line-Earth connection for testing.
- Initiate Test: Connect the test leads to the circuit. Press the large TEST button to begin the RCD test. The LCD will display the trip time in milliseconds (ms).
- Interpret Results: Compare the displayed trip time with the RCD's specifications. A buzzer will sound for disconnects or misoperation.
5.3. Voltage and Frequency Measurement
To measure voltage and frequency:
- Turn the rotary switch to VOLTS.
- Connect the test leads to the circuit points where voltage is to be measured.
- The LCD will display the voltage. Press the VOLT/FREQ button to toggle between voltage and frequency display.
5.4. Backlight Operation
- Backlight: Press the L-N/L-PE button (which has a lightbulb icon) to activate the LCD backlight for improved visibility in low-light conditions. Press again to turn off.
6. Maintenance
6.1. Cleaning
Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure the device is dry before storage or next use.
6.2. Battery Replacement
When the low battery indicator appears, replace the batteries promptly. Open the battery compartment on the rear of the device, remove old batteries, and insert new ones, observing correct polarity. Dispose of old batteries responsibly.
6.3. Fuse Replacement
If the internal fuse blows, it must be replaced by a qualified technician with a fuse of the exact specified type and rating to maintain safety compliance.
6.4. Storage
Store the device in its carrying case in a cool, dry place, away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed batteries. | Check battery polarity; replace batteries. |
| Inaccurate readings. | Poor test lead connection; damaged leads; incorrect function selected. | Ensure leads are securely connected; inspect leads for damage; verify correct function and range. |
| RCD does not trip during test. | RCD fault; incorrect test current/multiplier; circuit issue. | Verify RCD functionality with another method; recheck test settings; consult a qualified electrician. |
| "OL" or Over-range indication. | Measured value exceeds device's range. | Ensure the measurement is within the specified range of the KM-582. |
8. Technical Specifications
Figure 5: Technical Specifications. This table provides detailed technical specifications for the KM-582, including range settings, trip times, accuracy, voltage range, and compliance standards.
| Parameter | Details |
|---|---|
| Display | 1000-count LCD with Backlight |
| Safety Rating | CAT III 600V |
| Operating Voltage (Freq.) | 195V-253V |
| Voltage Range | 30-600V |
| Frequency Range | 45Hz-65Hz |
| Voltage Resolution | 1V |
| Voltage Accuracy | ±(3%+3) |
| Phase Angle Selection | 0° and 180° |
| Compliance Standard | IEC 61010-1, IEC 61010-2-030, IEC 61010-2-033, IEC 61557-1:2007; IEC 61557-6:2007, EN61326-1, EN61326-2-2 |
| Power Source | Battery Powered |
| Auto Power-Off | Yes |
| Data Hold | Yes |
RCD Trip Current and Time Specifications:
| Range Setting | Rated Operating Current | Trip Time | Accuracy |
|---|---|---|---|
| X 1/2 | 10mA/20mA/30mA/100mA/300mA/500mA | 2000ms | -10%~0% |
| X 1 | 10mA/20mA/30mA/100mA/300mA/500mA | 1000ms | 0%~10% |
| X 5 | 10mA/20mA/30mA | 40ms | 0%~10% |
| Auto ramp | 10mA/20mA/30mA/100mA/300mA/500mA | 300ms | -10%~10% |
| Trip time accuracy | ±(2%+2) | ||
9. Warranty and Support
9.1. Warranty Information
The KUSAM-MECO KM-582 Digital RCD (ELCB) Tester comes with a 1 Year Warranty from the date of purchase. This warranty covers manufacturing defects and faulty workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper maintenance.
9.2. Customer Support
For technical assistance, warranty claims, or service inquiries, please contact KUSAM-MECO customer support. Refer to the official KUSAM-MECO website or your purchase documentation for the most current contact information.
Manufacturer: Kusam Electrical Industries Limited, India.
