General (Residual Voltage Tester); Function (Residual Voltage Tester) - LEM MachineTest 204 Manuel D'utilisation

TECHNICAL SPECIFICATION
Insulation Resistance
Display range ......................................................... 0.00 to 19.99 MΩ
Measurement range ............................................... 0.20 to 19.99 MΩ
Accuracy ................................................................ ±(5% + 5D)
Nominal test voltage .............................................. 500 V DC, terminal "-~" grounded
Test current generator capability ........................... >1 mA DC
Short circuit test current ......................................... <5 mA DC
HV Dielectric test (Withstanding Voltage)
Nominal test voltage .............................................. 1000 V AC, floating output
Actual test voltage.................................................. 1000 up to 1250 V AC (230 V ±10%,
Accuracy of displayed test voltage......................... actual voltage –0 up to +30V
Supply transformer power ...................................... >500 VA
Tripping current...................................................... 10 mA, 50 mA, 100 mA or 200 mA
Accuracy of tripping current ................................... ±20% of preset nominal value
Trip out time after reaching set tripping current ..... <30 ms

5.3 General (Residual Voltage tester)

Input resistance...................................................... 20 MΩ
Power supply.......................................................... 9V battery
Dimensions (w × d × h) .......................................... 85 × 35 × 160 mm
Weight.................................................................... 0.3 kg
Protection classification ......................................... II (double insulation)
Over-voltage category............................................ II 300 V
Pollution degree ..................................................... 2
Degree of protection .............................................. IP 40
Casing.................................................................... plastic, black
Working temperature range ................................... -10 to 40°C
Operating temperature range................................. 0 to 40°C (accuracy refers to this
Reference temperature range ................................ 23 ±2 °C
Storage temperature range .................................... -30 to +60°C
Max. humidity ......................................................... 85 % RH (0 to 40 °C)
Reference humidity range ...................................... 40 to 60 % RH

5.4 Function (Residual Voltage Tester)

Residual Voltage
Max input voltage ................................................... 440 V AC or 620 V DC
Start trigger (automatic) ......................................... ∆U/∆t > 20 V/s
Waiting time after automatic trigger ....................... 1s or 5s
Safe level of Residual Voltage ............................... 60 V DC
Display ................................................................... green/red LED
Measurement principle........................................... two-wire
open circuit)
range)
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