Megger 210170, Hand-Crank Analog Major Megger Insulation Tester
These Major Megger Extended Range Insulation
Resistance Testers are the ideal instruments when high
ranges are needed for measuring insulation resistance.
Both provide excellent test voltage regulation and an
external guard terminal to eliminate surface leakage
current from the measurement. The instruments are all
electronic; they generate a regulated dc high voltage and
use low-zero-drift, high-accuracy circuits, with high current
sensitivity. Designed for portability, each is enclosed in a
molded, impact-resistance, flame-retardant case.
Both instruments are protected for connection to power
distribution systems up to 300 V Line-Ground and 500 V
Line-Line for Installation Category III. This relates to
transient overvoltage likely to be found in fixed installation
wiring.
This unit provides high-resistance readings up to 20,000
MΩ. It features an analog meter movement calibrated
directly in megohms, ohms and ac volts. Test voltages of
100, 250, 500 and 1000 volts dc are selected by a rotary
switch. Insulation resistance measurements up to 20 GΩ
can be made on all voltage ranges.
The unit is also equipped with a 0- to 5000-ohm continuity
range and a 0- to 600-volt ac or presence of dc voltage
measuring range. Power is supplied by an ac generator,
driven by a hand crank, through a gear train.
Features:
- Guard terminal to eliminate surface leakage current from the measurement
- High-resistance readings up to 20,000 MΩ (analog model)
- Digital autoranging with readings up to 1999 MΩ (digital model)
- Multiple test voltages
