Specifications - Martindale Electric VT25 Instruction Manual

ELECTRICAL
Voltage Detector
Maximum working voltage: 690V DC & AC rms
Nominal voltage threshold indications:
12, 24, 50, 120, 230, 690V AC/DC
Nominal voltage threshold tolerance:
Conforms to BS EN 61243-3:2014
Internal impedance at ELV a.c.: 260kΩ
Polarity indication: from 12V DC/AC rms
Range detection: Automatic
Response time: <1s to 100% of each nominal
Frequency range: DC, 16 to 400Hz
Test current (I
Duty ratio: 30s ON (operated) / 240s OFF (recovery)
Overvoltage protection: 690V DC or AC rms
Digital Voltmeter (VT28 only)
Voltage range: 10V to 690V (DC, 16 to 400Hz)
Resolution: 0.1V
Accuracy: ± (3% + 5 digits)
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%
Test current: 3µA
Overvoltage protection: 690V DC or AC rms
ENVIRONMENTAL
Temperature (Operating): -10°C to 55°C
(Storage): -20°C to 70°C, Non condensing
Humidity (Operating & Storage): ≤ 85% R.H
Altitude: up to 2000m
Pollution degree: 2
16
voltage
): <3.5mA
n
Specification
VT25/VT28
Voltage Tester