1. Introduction
Thank you for choosing the RuoShui 60B+ or 60D+ Insulation Resistance Tester. This professional digital insulation tester is designed to provide stable performance and reliable results for insulation resistance inspection. It is an essential tool for professionals working with electrical systems, cables, electromechanical equipment, telecommunications equipment, and various electrical facilities. This manual will guide you through the safe operation, setup, and maintenance of your device.
2. Safety Information
Please read and understand all safety warnings and operating instructions before using this instrument. Failure to follow these instructions may result in electric shock, fire, or serious injury.
General Safety Warnings:
- Always ensure the instrument is in good working condition before use.
- Do not use the instrument if it appears damaged or if the insulation on the test leads is compromised.
- Always wear appropriate personal protective equipment (PPE), including insulated gloves and safety glasses, when working with high voltage.
- Avoid contact with live circuits.
- Ensure the circuit under test is de-energized and properly discharged before connecting or disconnecting test leads, unless performing live voltage measurements as instructed.
- Do not operate the instrument in wet environments or in the presence of explosive gases or dust.
- Keep hands and fingers away from the test terminals during measurement.
- The instrument is designed for indoor and outdoor use (not waterproof) and up to 2000 meters above sea level.
3. Product Overview
The RuoShui Insulation Resistance Tester is a compact and robust device featuring a clear digital display and intuitive controls.
Components and Controls:
- Rope hanging hole: For attaching a hand strap or neck strap.
- Measuring knob: Used to initiate and lock measurements.
- Ground terminal (EARTH): Connects to the ground reference.
- Protection terminal (GUARD): Used for guarding measurements to eliminate surface leakage currents.
- Voltage measurement terminal (V): For voltage measurements.
- Voltage output terminal (LINE): Connects to the high-voltage side of the circuit under test.
- Display screen: HD large screen for clear digital symbol display.
- Voltage range: 2500V: Selects 2500V test voltage.
- Power adapter interface: DC 12V power adapter jack for external power.
- Voltage range: 1000V: Selects 1000V test voltage.
- Voltage range: 500V: Selects 500V test voltage.
- Function selection keys (V≡, 500V, 1000V, 2500V): To select desired test voltage or voltage measurement mode.
- Data hold/backlight (B/L HOLD): Button to hold the displayed data or activate/deactivate backlight.
- Power button: Turns the device ON/OFF.
Packaging Accessories:
- Insulation resistance tester (main unit)
- Packing box
- Product Manual
- Hand rope
- Test lead (red and black)
- Alligator clip (red and black)
- Connecting wires
4. Specifications
The RuoShui 60B+ and 60D+ models offer slightly different specifications, particularly in their insulation resistance ranges and voltage capabilities.
Model 60D+ Specifications:
| Parameter | Range / Value |
|---|---|
| Insulation Resistance (500V) | 0.6MΩ ~ 4.99GΩ |
| Insulation Resistance (1000V) | 1.0MΩ ~ 9.99GΩ |
| Insulation Resistance (2500V) | 3.0MΩ ~ 49.9GΩ |
| AC Voltage | 750V ±(1.0%+6) |
| Short Circuit Current | <4mA |
| LCD Display | Digital: max 1999 characters display |
| Working Temperature & Humidity | 0~40°C, relative humidity ≤85% (no condensation) |
| Storage Temperature & Humidity | -20°C~60°C, relative humidity below 90% (no condensation) |
| Use Environmental Conditions | Indoor and outdoor use (not waterproof), 0~2000 meters above sea level |
| Overrange Indication | √ |
| Battery Type | Alkaline batteries 1.5V (LR6) x 8 |
| Low Battery | Show low battery sign |
| Automatic Shut-down | About 15 minutes |
| Size (L x W x D) | 178 x 110 x 59 mm |
| Weight | About 600g |
Model 60B+ Specifications:
| Parameter | Range / Value |
|---|---|
| Insulation Resistance (250V) | 0.4MΩ ~ 999MΩ |
| Insulation Resistance (500V) | 0.6MΩ ~ 1999MΩ |
| Insulation Resistance (1000V) | 0.8MΩ ~ 4999MΩ |
| DC Voltage | ±(20~1500)V |
| AC Voltage | AC 20V ~ 1000V |
| LCD Display | Digital: max 5000 characters display |
| Working Temperature & Humidity | 0~40°C, relative humidity ≤85% (no condensation) |
| Storage Temperature & Humidity | -20°C~60°C, relative humidity below 90% (no condensation) |
| Use Environmental Conditions | Indoor and outdoor use (not waterproof), 0~2000 meters above sea level |
| Overrange Indication | √ |
| Battery Type | Alkaline batteries 1.5V (LR6) x 8 |
| Low Battery | Show low battery sign |
| Automatic Shut-down | About 15 minutes |
| Size (L x W x D) | 178 x 110 x 59 mm |
| Weight | About 600g |
5. Setup
5.1. Battery Installation
The device requires 8 x 1.5V (LR6) Alkaline batteries. Open the battery compartment cover on the back of the instrument, insert the batteries according to the polarity markings, and close the cover securely.
5.2. External Power Supply
The tester can also be powered by an external DC 12V power adapter. Connect the adapter to the DC 12V power adapter jack (9 in Figure 2) on the side of the instrument. This is useful for extended use without relying on batteries.
5.3. Connecting Test Leads
Connect the red and black test leads to the appropriate terminals on the tester. For insulation resistance measurements, typically the red lead connects to the LINE terminal (6) and the black lead to the EARTH terminal (3). The GUARD terminal (4) can be used for more precise measurements to eliminate surface leakage currents.
6. Operating Instructions
6.1. Power On/Off
Press the Power button (14 in Figure 2) to turn the instrument ON or OFF.
6.2. Selecting Test Voltage
Use the function selection keys (12 in Figure 2) to choose the desired test voltage (500V, 1000V, or 2500V for 60D+; 250V, 500V, or 1000V for 60B+). You can also select AC/DC voltage measurement mode using the V≡ key.
6.3. Performing an Insulation Resistance Test (One-Key Measurement)
This professional digital insulation tester features a simple one-key operation for stable and reliable measurements.
- Connect the test leads to the circuit or component you wish to test. Ensure proper connection to the LINE and EARTH terminals.
- Select the appropriate test voltage using the function selection keys.
- Press and hold the Measuring knob (2 in Figure 2) and turn it clockwise to lock it for continuous measurement. The red indicator light will illuminate, indicating the measurement is in progress.
- The insulation resistance value will be displayed on the screen. When the displayed value is stable, the measurement is complete.
- If the display shows "OL", it represents resistance over the range, indicating good insulation.
6.4. Automatic Discharge
The instrument features an automatic discharge function. After testing the insulation resistance of capacitive loads, the charged energy is automatically released, enhancing safety.
6.5. Data Hold and Backlight
Press the B/L HOLD button (13 in Figure 2) to freeze the current reading on the display. Press it again to release the hold. A long press of the B/L HOLD button will activate or deactivate the backlight for the HD large screen, making it easy to read in low-light conditions.
6.6. Video Demonstration: How to Use
Watch this video for a practical demonstration of how to measure insulation strength using the RuoShui Insulation Resistance Tester.
Video 1: Measuring Insulation Strength of a Motor
7. Maintenance
7.1. Cleaning
Wipe the instrument with a dry, soft cloth. Do not use abrasive cleaners or solvents. Ensure no moisture enters the device.
7.2. Battery Replacement
When the low battery indicator appears on the display, replace all 8 x 1.5V (LR6) Alkaline batteries promptly to ensure accurate measurements and proper operation.
7.3. Storage
When not in use for an extended period, remove the batteries to prevent leakage. Store the instrument in a cool, dry place, away from direct sunlight and extreme temperatures. The recommended storage temperature is -20°C to 60°C with relative humidity below 90% (no condensation).
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Instrument does not power on | Dead or incorrectly installed batteries; No external power. | Check battery polarity and charge/replace batteries. Ensure external power adapter is correctly connected and functional. |
| "OL" displayed during measurement | Resistance is over the measurement range. | This indicates good insulation. No action needed unless expecting a lower resistance. |
| Inaccurate readings | Poor test lead connection; Environmental interference; Low battery. | Ensure test leads are securely connected. Avoid strong electromagnetic fields. Replace batteries if low. |
| Low battery indicator | Batteries are running low. | Replace all 8 x 1.5V (LR6) Alkaline batteries. |
9. User Tips
- For consistent results, always ensure the test leads are clean and free from damage.
- When testing motors or large capacitive loads, allow sufficient time for the automatic discharge function to complete before disconnecting leads.
- Utilize the backlight feature in dimly lit environments for better readability of the large screen.
- The hand rope can be useful for carrying the device securely during fieldwork.
10. Warranty and Support
RuoShui provides quality assurance for its products. For any product-related inquiries, technical support, or warranty claims, please contact the seller or RuoShui customer service. Keep your purchase receipt as proof of purchase.
