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Martindale VT28 Voltage Tester
  • Martindale VT28 Voltage Tester
  • Martindale VT28 Voltage Tester
  • Martindale VT28 Voltage Tester
  • Martindale VT28 Voltage Tester

Martindale VT28 Voltage Tester

Martindale approved distributor and service centre.

Includes: 2 x 1.5V AAA batteries, Martindale VT28 instructions.

£58.80 Save 30%
Tax excluded
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The Martindale VT28 shares the same useful functions as the VT25 but has the additional benefit of an LCD display. All voltage, continuity and phase rotation indications have the same bright LED indication but the VT28 also displays the measured voltage reading on the 25mm x 15mm LCD display.

The large digit LCD display of the VT28 gives actual voltage readings in addition to the LED voltage ranges. The AC/DC voltage detection, continuity and phase rotation functions all have bright LED indication. Auto power-off ensures a long battery lifetime.

The voltage indicator conforms to the latest safety standards and includes removable probe caps for GS38 compliance. Additional safety features include a double insulated 1.2m cable with a black outer and contrasting inner core to give a visual warning of damage.


12 - 690V AC/DC.
LED & LCD Voltage Display.
Single pole phase test 90 - 690V.
Phase rotation test 100 - 690V.
Continuity - optical and acoustic indication.
Auto power off.
White LED torch light.

Martindale VT28 Specifications
Voltage Indicator
Maximum Working Voltage 690 V DC & AC rms.
Nominal Voltage Threshold Indications 12, 24, 50, 120,
230, 400, 690 V AC/DC.
Nominal Voltage Threshold Tolerance Conforms to BS
Polarity Indication from 12 V DC/AC rms.
Range Detection Automatic.
Response Time <1s at 1005 of each nominal voltage.
Frequency Range DC, 16 to 400 Hz.
Test Current <3.5 mA at 690 V.
Duty Ratio 30s ON (operated) / 240s OFF (recovery).
Single Pole Phase Test
Voltage Range 100 to 690 V AC RMS.
Frequency Range 50 to 60 Hz.
Phase Rotation Test
Voltage Range 120 to 400 V AC RMS (Phase to Earth).
Frequency Range 50 to 60 Hz.
Resistance Range 0 to 500 kΩ + 50%.
Overvoltage Protection 690 V DC or AC rms.
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.
Power 2 x 1.5 V, AAA alkaline batteries (IEC LR03,
NEDA 24 A).
Battery Consumption 80 mA approx.
Dimensions 205(L) x 67(W) x 27(D) mm.
Weight 130g approx.
Conformity BS EN61243-3:2010 CAT IV 300V, CAT
III 600V.
Class II, Double Insulation.
Pollution Degree 2.
IP Rating IP64.
Conformity BS EN61326-1.
Martindale VT28 warranty Two-years.


Martindale VT25 + VT28 Datasheet

PDF Specifications of the Martindale VT28 Voltage Indicator.

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