The Martindale MARVI13800 is an updated version of VI13700/2 with the fuse replaced by a high wattage resistor in the probe that will limit the current in the event of damage to the cable. This protection is superior to the protection offered by the fuse as the current that can flow under fault conditions is considerably less. The vast majority of competitor products have no protection built into the probe.
Apart from the fuse/resistor in the probe everything else about the specification of VI13700/2 and VI13800 is identical, including the contrasting inner cable sheath to quickly identify cable damage. However, in order to distinguish VI13700/2 from VI13800, the new model has the probe changed to all black instead of yellow. The probe is clearly marked "impedance protected" rather than showing a fuse rating. It is sealed and has no user replaceable parts.
The indicator also meets the latest version of standard BS EN61243-3:2010.
- Nominal voltage range: 50-600V AC / DC
- Nominal voltage threshold indications: 50, 100, 200, 400V DC/AC rms
- Nominal voltage threshold tolerance: < 85% of marked threshold indication
- Polarity indication: from approx 12V DC/AC rms
- AC/DC voltage detection: automatic
- Range detection: automatic
- Response time: < 0.1s
- Frequency range: DC, 1-400Hz
- Test current: < 3.5mA at 600V DC/AC rms
- Duty ratio: 30s ON (operated) / 240s OFF (recovery)
