The HK690 Proving Unit is a portable and reliable device designed to verify the functionality of voltage testers and measuring instruments.
It provides a stable 690V AC (50Hz) output, allowing users to safely confirm whether their test equipment is operating correctly before and after use.
Engineered for field electricians and maintenance professionals, the unit supports both high and low impedance instruments, ensuring accurate validation in real working conditions.
Features
- 690V AC constant output ensures reliable instrument verification
- Compatible with both high impedance and low impedance testers
- Designed for proving 2-pole voltage testers and multimeters
- Bright LED indicators provide clear visual confirmation
- Battery-powered design for full portability
- Lightweight and rugged enclosure for field use
- Safe operation with stable output performance
Technical Specifications
| Parameter | Specification |
|---|---|
| Output Voltage | 690V AC |
| Frequency | 50Hz |
| Output Type | Constant Voltage |
| Compatibility | High & Low Impedance Instruments |
| Application | Voltage Tester & Multimeter Proving |
| Indicator | High-visibility LED |
| Power Supply | 6 × AA Alkaline Batteries |
| Enclosure | Rugged, Portable Design |
| Safety | Safe & Reliable Operation |
Applications
Electrical Testing & Maintenance
Used to verify voltage testers before and after measurements, ensuring safety and accuracy in electrical work.
Field Service & Troubleshooting
Ideal for electricians working in on-site environments where quick validation of test tools is required.
Industrial & Commercial Systems
Suitable for maintenance of control panels, distribution systems, and electrical installations.
Compliance & Safety Procedures
Supports safe working practices by confirming instrument functionality before live testing.