Martindale VT28 Voltage Indicator
An upgraded version of Martindale's VT25 voltage indicator, this device includes all of the functions of that device but also includes an integrated LCD display which shows full test values as well as LED indication.
This device is used to give indication of voltage levels (both AC and DC) up to 690V, can be used to test continuity with audible and visual indicators and can also be used to give indications of three phase rotation.
A built-in LED torch on the end of the VT28 also ensures that it can be used in darkened conditions.
Martindale VT28 Voltage Indicator Key Features
- LCD screen shows full test values
- LED indicators
- AC and DC voltage measurements up to 690V
- Continuity test with audible and visual indication
- Three phase rotation indication
- Built-in LED torch
Full List of Products Included
- Martindale VT28 Voltage Indicator
- Batteries
- Instructions
Accessories related to this product:
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Martindale Lock-off KitSKUMARLOKKIT1 -
Part CodeMARVT28
Martindale VT28 Technical Specifications
| Voltage Indicator | |
| Maximum Working Voltage | 690V DC & AC rms |
| Nominal Voltage Threshold Indications | 12, 24, 50, 120, 230, 400, 690V AC/DC |
| Nominal Voltage Threshold Tolerance | Conforms to BS EN61243-3:2010 |
| Polarity Indication | from 12V DC/AC rms |
| Range Detection | Automatic |
| Response Time | <1s at 1005 of each nominal voltage |
| Frequency Range | DC, 16 to 400Hz |
| Test Current | <3.5mA at 690V |
| Duty Ratio | 30s ON (operated) / 240s OFF (recovery) |
| Single Pole Phase Test | |
| Voltage Range | 100 to 690V AC RMS |
| Frequency Range | 50 to 60Hz |
| Phase Rotation Test | |
| Voltage Range | 120 to 400V AC RMS (Phase to Earth) |
| Frequency Range | 50 to 60Hz |
| Continuity | |
| Resistance Range | 0 to 500kΩ + 50% |
| Overvoltage Protection | 690V DC or AC rms |
| Environmental | |
| Operating Temperature | -10°C to 55°C |
| Storage Temperature | -20°C to 70°C, non condensing |
| Humidity | Max 85% R.H. |
| Altitude | Up to 2000m |
| General | |
| Power | 2 x 1.5V, AAA alkaline batteries (IEC LR03, NEDA 24A) |
| Battery Consumption | 80mA approx. |
| Dimensions | 205(L) x 67(W) x 27(D) mm |
| Weight | 130g approx |
| Safety | |
| Conformity | BS EN61243-3:2010 CAT IV 300V, CAT III 600V |
| Class | II, Double Insulation |
| Pollution Degree | 2 |
| IP Rating | IP64 |
| EMC | |
| Conformity | BS EN61326-1 |
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