BT-6688B Digital Insulation Resistance Tester,
1. Professional & Versatile Electrical Tester
This 6688B is a high-performance, hand-held digital insulation resistance tester. It offers multiple output test voltages from 100V to 5000V, with a maximum measurement range of up to 200GΩ. It's the ideal tool for testing transformers, motors, cables, switches, and various electrical appliances, making it essential for maintenance and safety verification.
2. Safety is Paramount: IEC Certified & Reliable
Designed for user safety, this meter complies with IEC-1010 standards for double insulation and Overvoltage Category II. Its shock-proof, dust-proof, and moisture-proof construction ensures safe operation, even in harsh outdoor environments. A complete protection circuit effectively prevents damage from induced voltages.
3. Multi-Function with User-Friendly Features
Beyond insulation testing, this unit can also measure AC voltages up to 750V. The large, backlit LCD screen (3 ½ digit) ensures clear readability in low light. For convenience, it includes a Data Hold (HOLD) function and a bright LED indicator that alerts you when high voltage is being output.
4. Robust Design with Simple Power Options
Powered by 6 standard AA batteries (included), this tester requires no hand cranking. It features a rugged case with a shockproof protective sleeve for durability on the job site. The intuitive rotary switch makes selecting functions and voltage ranges quick and straightforward.
5. Complete Ready-to-Use Kit
This listing includes everything you need to start working immediately: the 6688B Tester, a set of dedicated test leads, user manual, It's a complete, professional-grade diagnostic solution for electricians, technicians, and industrial maintenance crews.
Features & Functions
- Dual Testing Functions: Primarily measures insulation resistance; secondarily measures AC voltage.
- Multiple Test Voltages: Selectable output voltages: 100V, 250V, 500V, 1000V, 2500V, and 5000V.
- High-Resistance Measurement: Maximum insulation resistance measurement range of 200 GΩ.
- Large Display: 3½ digit (1999 count) large LCD with backlight for clear readability.
- Data Hold Function: "HOLD" button freezes the current reading on the display.
- Safety Indicators: LED "HV" indicator illuminates when high voltage is being output.
- Auto Features: Automatic zero calibration, automatic polarity display, and over-range indication.
- Robust Design: Shock-proof, dust-proof, and moisture-proof casing suitable for outdoor use.
- Simple Power: Operates on 6 x 1.5V AA batteries (not included); no hand cranking required.
Technical Specifications
| Model | 6688B |
| Max. Output Voltage | 5000 V |
| Insulation Resistance Range | 1 MΩ to 200 GΩ |
| Insulation Resistance Accuracy | 1MΩ-200MΩ: ±(3% rdg + 5 dgt) 200MΩ-10GΩ: ±(5% rdg + 5 dgt) 10GΩ-200GΩ: ±(10% rdg + 5 dgt) |
| AC Voltage Measurement | Range: 1 to 750 V Accuracy: ±(2% rdg + 5 dgt) Frequency: 40 - 400 Hz |
| Power Supply | 6 x 1.5V AA Batteries (R6), Not include. |
| Low Battery Warning | Yes (Display Indicator) |
| Operating Conditions | 0°C to 40°C (<80% RH) |
| Dimensions & Weight | 218 x 122 x 75 mm / ~900 g |
| Safety Compliance | IEC-1010 (Double Insulation, Pollution Degree 2, Overvoltage Category II) |
Package Includes
- Hand-held Digital Insulation Resistance Tester 6688B
- Set of Dedicated Test Wires
- User Manual
