Megger CB100 MGR-CB100 Low-Voltage Capacitance and Insulation Power Factor Test Set
Lightweight and portable
100 Hertz test frequency
28 volt test voltage
Test mode selector switch
Direct reading of capacitance and dissipation factor
Perform tests in UST and GST configuration
Model CB-100 is used for testing a wide variety of electrical insulation
including that found in power transformers, circuit breakers and most other
substation apparatus. Using test cells or jigs, it can also test insulating
liquids and solids.
Capacitance and dissipation factor measurements are used to give an indication
of the condition of insulation. Periodic readings on high-voltage electrical
equipment are used for trending; to help detect problems in equipment before
insulation breakdown occurs.
Model CB-100 overcomes 60 Hertz interference by shifting the frequency of the
bridge output to 100 Hertz. When the null detector is tuned to 100 Hertz,
unwanted signals are effectively filtered out and only the desired test
current is measured.
12 multipliers are used to allow measurements from less than 20 pF to 1.2 F.
Accuracy: +/-0.25% of range +/-4 pF
Dissipation Factor (Power Factor)
Range Accuracy Resolution
0-1% +/-0.03 0.001%
1-10% +/-0.3 0.01%
10-20% +/-0.5 0.01%
20-30% +/-1.0 0.01%
The instrument measures the following combinations:
UST Ch-l (ungrounded specimen test, HI to LO)
GST Ch-g (grounded specimen test, HI to ground, LO guard)
GST Cl-g (grounded specimen test, LO to ground, HI guard)
GST Ch-g + Ch-l (grounded specimen test, HI to ground, plus HI to LO)
GST Cl-l + Cl-h (grounded specimen test, LO to ground, plus LO to HI)
Ordering sku MGR 810130 For 120 volt, 60 Hz operation.
North America version cannot be wired for European Power.
European Power version sku is MGR 810132-1