Martindale VT28 Two Pole Voltage & Continuity Tester
The Martindale VT28 Two Pole Voltage & Continuity Tester gives electricians a dependable way to check voltage, continuity and phase rotation in one compact unit. It measures AC and DC voltages from 12V to 690V and combines bright LED indication with a clear LCD display. As a result, readings are easy to see in a wide range of working conditions.
Built for daily use, this tester features a tough dual-insulated cable with a wear indicator that helps highlight damage before safety is compromised. The IP64 housing protects against dust and water splashes, while the white LED torch improves visibility in dark areas. In addition, the tester uses an automatic power-off function to help preserve battery life.
Clear Testing Functions
The Martindale VT28 Two Pole Voltage & Continuity Tester includes an audible and visual continuity function for quick circuit checks. It also performs single pole phase testing between 100V and 690V AC RMS, making live conductor identification easier. Furthermore, the phase rotation function supports three-phase systems from 120V to 400V AC RMS.
A large LCD screen displays measured voltage values from 10V to 690V with a resolution of 0.1V. Bright LED indicators provide instant reference points at common voltage levels. Therefore, users can work faster when carrying out routine electrical checks and fault finding.
Designed for Professional Use
Safety remains a key part of the Martindale VT28 Two Pole Voltage & Continuity Tester. It complies with BS EN 61243-3:2014 requirements and includes removable GS38 probe caps for compliant testing. The unit also carries CAT III 1000V and CAT IV 600V ratings for demanding applications.
Two different set options are available, allowing users to select the package that best suits their testing requirements. With its compact dimensions, lightweight construction and broad measurement capability, the Martindale VT28 Two Pole Voltage & Continuity Tester is well suited to professional electrical installation and maintenance work.
Key Features
- Measures AC and DC voltage from 12V to 690V
- Large LCD display for clear digital readings
- Bright LED indication for rapid voltage checks
- Audible continuity testing with buzzer indication
- Single pole phase detection capability
- Phase rotation testing for three-phase systems
- White LED torch for low-light environments
- Automatic power-off function saves battery life
- Compact and lightweight handheld design
- Dual-insulated cable improves user safety
- Wear indicator helps identify cable damage
- Removable GS38 probe caps for compliant testing
- Suitable for electrical installation and maintenance work
- Available in two different set configurations
Technical Specifications
| Manufacturer | Martindale Electric |
| Manufacturer part code | VT28 |
| Voltage measurement range | 10V to 690V AC/DC |
| Operating frequency range | DC and 16Hz to 400Hz |
| LED voltage thresholds | 12V, 24V, 50V, 120V, 230V, 400V and 690V |
| Digital display resolution | 0.1V |
| Measurement accuracy | ±(3% + 5 digits) |
| Single pole phase test range | 100V to 690V AC RMS |
| Single pole phase frequency | 50Hz to 60Hz |
| Phase rotation range | 120V to 400V AC RMS |
| Phase rotation frequency | 50Hz to 60Hz |
| Continuity measurement range | 0Ω to 500kΩ |
| Internal impedance at ELV AC | 260kΩ |
| Response time | Less than 1 second to 100% of nominal voltage |
| Test current | Less than 3.5mA |
| Duty cycle | 30 seconds on and 240 seconds off recovery |
| Overvoltage protection | 690V DC or AC RMS |
| Cable type | Dual insulated with wear indication |
| Cable length | 1.2m |
| Torch light | Integrated white LED |
| Ingress protection | IP64 dust and splash resistant |
| Safety standard | BS EN 61243-3:2014 |
| Safety category | CAT III 1000V and CAT IV 600V |
| GS38 compliance | Yes |
| Battery supply | 2 x 1.5V AAA batteries |
| Dimensions | 205 x 67 x 27mm |
| Weight | 130g including batteries |
| Auto power off | Yes |
| Warranty | Not specified |
Comparison Table
| Function | VT25 | VT28 |
|---|---|---|
| LED voltage indication | 12-690V AC/DC | 12-690V AC/DC |
| LCD voltage indication | – | 10V-690V DC, 16Hz-400Hz |
| Continuity with LED and buzzer | ✓ | ✓ |
| Phase rotation | ✓ | ✓ |
| Single pole test | ✓ | ✓ |
| LED torch | ✓ | ✓ |
| Safety rating | CAT III 1000V CAT IV 600V |
CAT III 1000V CAT IV 600V |
| GS38 compliant | ✓ | ✓ |
Document Downloads
What’s Included
- Martindale VT28 Two Pole Voltage & Continuity Tester
- 2 x AAA batteries
- Instruction manual
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