Doble M4100 Power Factor/Tan-Delta Instrument

Rent Doble M4100 Power Factor/Tan-Delta Instrument
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Specifications Brochure

The Doble M4100 unit is the foundation of the M4000 Power Factor/Tan-Delta Instrument. The M4100 Instrument evaluates the integrity of high-voltage substation apparatus by measuring the power factor/tangent delta and a number of other values. It also measures capacitance, to evaluate physical changes to the apparatus. The M4100 was engineered from the ground up to overcome the common problems that plague other test instruments. The result is nothing less than an entirely new approach to testing.

Doble M4100 Features:

  • Totally eliminates substation signal interference with Doble’s patented Line Frequency Modulation technology
  • Generates its own clean test signal for the most reliable and repeatable results
  • The highest power to better replicate in service condition
  • Self-calibrating in the field, so it’s always accurate
  • Advanced digital technology takes accuracy to new levels
  • Automated setup eliminates errors
  • Doble Test Assistant ® (DTA) expert diagnostics software makes testing easy, fast and very smart
  • All records are presented in a format that is easy to read, save and print.
  • DTA Web provides an on-line database of test results, complete with powerful analysis tools.

Doble M4100 Specifications:

Power Specifications:
Output Voltage: 0 to 12 kV ac
Output Current: 100 mA continuous at 10 kV 200 mA > 30 minutes at 10 kV
300 mA > 4 minutes at 10 kV

Operating time period based on 50°C operating temperature. Longer durations at high currents will be realized at lower operating temperatures

Output Power: 3 kVA

Sinusoidal output signal internal generated independent of input supply, No loss in performance when used with portable generator

AC INput 95-264 V AC 47 to 63 Hz
16 A max at 110 V,
16 A max at 110 V,
Test Frequency:
Range: 45 to 70 Hz independent of input signal
Resolution: 0.1 Hz
Accuracy: ±1% of reading
Test Voltage:
Range: 25 V to 12 kV
Resolution: 1 V
Accuracy: ±1% of reading, ±1 V
Test Current:
Range: 0 to 5.0 A
Resolution: 0.1 μA
Accuracy: ±1% of reading, ±1 μA
Range: 0 to 100 μF
Resolution: 0.01 pF
Accuracy: ± 0.5% of reading, ± 1 rF
Range: 6 H to 10 MH
Resolution: 0.01 H
Accuracy: ± 0.5% of reading
Range: 0 to 2 kW, actual
Resolution: 0.5 mW
Accuracy: ± 2% of reading at 10 kV,
± 0.03% of VA, ±0.5 mW
Dissipation Factor Range:
%PF 0 to ±100.00%
PF 0 to ±1.0000
% Tan δ 0 to ±999.99%
Tan δ 0 to ±9.9999
mW/Var 0 to ±9999.9
Resolution: 0.01% / 0.0001
Accuracy: ± 0.5% of reading, typical
&plismn;0.04% PF/Tan δ
± 0.0004 PF/Tan δ
Temperature Measurement
Range: -20 °C to +50 °C
Resolution: 0.1 °C
Accuracy: ±4 °C
Instrument Dimensions 10-1/4 in. H x 20 in. W x
25-1/4 in. D 26 cm H x
50.8 cm W x 64.1 cm D
Weight 95 lbs/45.5 kg
High Voltage Cable: 60 ft./18 mt (other lengths available as options)