Test Instrument Reference

Megger DELTA4000

Updated 2026-10-27

Megger DELTA4000, power factor test set
Image: Megger, from its product page (www.megger.com)

Specifications

Figures as the manufacturer states them on its product page or datasheet; each row links its data record.

Capacitance range
0 to 100 μF, 0.01 pF maximum resolution
Dimensions
control unit 290 x 290 x 460 mm (11 x 11 x 18 in.); high voltage unit 290 x 290 x 460 mm (11 x 11 x 18 in.)
Input power
90 V to 264 V, 45 Hz to 66 Hz, 16 A max
Operating temperature
-20 to +55 °C (-4 to +131 °F)
Output current
300 mA for 4 minutes; 200 mA for 30 minutes; 100 mA continuous
Output voltage
12 kV
Power factor accuracy
±(0.5% of reading + 0.02%)
Series models
DELTA4110 (DELTA4100 control unit and DELTA4010B HV unit, used with an external computer); DELTA4310A (DELTA4300A control unit with onboard computer and DELTA4010B HV unit)
Test frequency range
45 Hz to 70 Hz at 12 kV; 15 Hz to 400 Hz at 4 kV; 1 Hz to 505 Hz at 250 V; 0.0001 Hz maximum resolution
Weight
DELTA4100 control unit 14 kg (31 lbs); DELTA4300A control unit 17 kg (35 lbs); DELTA4010 high voltage unit 23 kg (48 lbs); HV cable 8 kg (18 lbs); other cables 10 kg (23 lbs)

Data records

  • The manufacturer's page for the DELTA4000 was read on the date given in the value. Value: 2026-10-27. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.checked
  • Megger lists the DELTA4000 series as automatic insulation power factor and tan delta test sets for assessing the condition of electrical insulation. Value: power factor test set. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.class
  • The datasheet states the DELTA4000 measures the excitation current of transformer windings and performs automatic tip-up tests. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.function.excitation-current-tip-up
  • In addition to power frequency testing, the DELTA4000 performs power factor and tan delta measurements at a low test frequency, which the manufacturer states enhances the assessment made at power frequency. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.function.low-frequency-measurement
  • The DELTA4000 measures voltage, current, power loss, capacitance and inductance and reports power factor and tan delta. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.function.measured-quantities
  • The datasheet states that with optional accessories the DELTA4000 also tests insulating oil, measures transformer turns ratio at high voltage and measures capacitive voltage transformer ratio and phase. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.function.optional-accessories
  • The DELTA4000 measures insulation power factor and dissipation factor (tan delta) on transformers, bushings, circuit breakers, cables, lightning arresters and rotating machines. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.function.power-factor-tan-delta
  • The datasheet states the DELTA4000 derives an individual temperature correction from the insulation under test instead of applying a generic correction table. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.function.temperature-correction
  • The DELTA4000 is a product of Megger. Value: Megger. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.manufacturer
  • The manufacturer gives the model designation as DELTA4000. Value: DELTA4000. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.model
  • Megger maintains a product page for the DELTA4000 on its own website, which is the page cited for this entry. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.product-page
  • The datasheet states the capacitance measuring range and maximum resolution of the DELTA4000. Value: 0 to 100 μF, 0.01 pF maximum resolution. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.capacitance-range
  • The datasheet states the dimensions of the control unit and of the high voltage unit of the DELTA4000, handles not included. Value: control unit 290 x 290 x 460 mm (11 x 11 x 18 in.); high voltage unit 290 x 290 x 460 mm (11 x 11 x 18 in.). Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.dimensions
  • The datasheet states the mains input range and the maximum input current for the DELTA4000. Value: 90 V to 264 V, 45 Hz to 66 Hz, 16 A max. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.input-power
  • The datasheet states the operating temperature range of the DELTA4000. Value: -20 to +55 °C (-4 to +131 °F). Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.operating-temperature
  • The datasheet states the output current of the DELTA4000 for three durations. Value: 300 mA for 4 minutes; 200 mA for 30 minutes; 100 mA continuous. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.output-current
  • The datasheet states the continuously adjustable output voltage range of the DELTA4000. Value: 12 kV. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.output-voltage
  • The datasheet states the accuracy of the power factor and dissipation factor measurements of the DELTA4000. Value: ±(0.5% of reading + 0.02%). Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.power-factor-accuracy
  • The datasheet lists the configurations in which the DELTA4000 is supplied. Value: DELTA4110 (DELTA4100 control unit and DELTA4010B HV unit, used with an external computer); DELTA4310A (DELTA4300A control unit with onboard computer and DELTA4010B HV unit). Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.series-models
  • The datasheet states the test frequency ranges of the DELTA4000 at three output voltage levels and the maximum frequency resolution. Value: 45 Hz to 70 Hz at 12 kV; 15 Hz to 400 Hz at 4 kV; 1 Hz to 505 Hz at 250 V; 0.0001 Hz maximum resolution. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.test-frequency-range
  • The datasheet states the weight of each unit of the DELTA4000. Value: DELTA4100 control unit 14 kg (31 lbs); DELTA4300A control unit 17 kg (35 lbs); DELTA4010 high voltage unit 23 kg (48 lbs); HV cable 8 kg (18 lbs); other cables 10 kg (23 lbs). Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.spec.weight
  • The datasheet names EN 61326-1:2013 as the electromagnetic compatibility standard the DELTA4000 is designed to. Value: EN 61326-1:2013. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.standard.en-61326-1
  • The datasheet names IEC 61010-1:2001, printed there as IEC/EN 61010-1:2001, as the safety standard the DELTA4000 is designed to. Value: IEC/EN 61010-1:2001. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.standard.iec-61010-1
  • The datasheet names IEC 68-2-31 for the drop, topple and freefall testing of the DELTA4000 and gives no edition. Value: IEC 68-2-31. Source: Megger datasheet, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.standard.iec-68-2-31
  • The catalog name of the model is written Megger DELTA4000. Value: Megger DELTA4000. Source: Megger product page, web page edition. Verified 2026-10-27. Record prod.megger-delta4000.title

Sources

  • Megger datasheet, DELTA4000 12 kV Insulation Diagnostic System data sheet (Delta4000_ds_en_V020), web page edition, Megger. Held as: Public page. Publisher page
  • Megger product page, DELTA4000 12 kV Tan Delta & Power Factor Diagnostic System, web page edition, Megger. Held as: Public page. Publisher page
Changelog (50 entries)
DateRevisionChange
2026-10-27created (prod.megger-delta4000.checked)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.checked)
2026-10-27created (prod.megger-delta4000.class)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.class)
2026-10-27created (prod.megger-delta4000.function.excitation-current-tip-up)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.function.excitation-current-tip-up)
2026-10-27created (prod.megger-delta4000.function.low-frequency-measurement)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.function.low-frequency-measurement)
2026-10-27created (prod.megger-delta4000.function.measured-quantities)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.function.measured-quantities)
2026-10-27created (prod.megger-delta4000.function.optional-accessories)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.function.optional-accessories)
2026-10-27created (prod.megger-delta4000.function.power-factor-tan-delta)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.function.power-factor-tan-delta)
2026-10-27created (prod.megger-delta4000.function.temperature-correction)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.function.temperature-correction)
2026-10-27created (prod.megger-delta4000.manufacturer)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.manufacturer)
2026-10-27created (prod.megger-delta4000.model)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.model)
2026-10-27created (prod.megger-delta4000.product-page)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.product-page)
2026-10-27created (prod.megger-delta4000.spec.capacitance-range)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.capacitance-range)
2026-10-27created (prod.megger-delta4000.spec.dimensions)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.dimensions)
2026-10-27created (prod.megger-delta4000.spec.input-power)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.input-power)
2026-10-27created (prod.megger-delta4000.spec.operating-temperature)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.operating-temperature)
2026-10-27created (prod.megger-delta4000.spec.output-current)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.output-current)
2026-10-27created (prod.megger-delta4000.spec.output-voltage)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.output-voltage)
2026-10-27created (prod.megger-delta4000.spec.power-factor-accuracy)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.power-factor-accuracy)
2026-10-27created (prod.megger-delta4000.spec.series-models)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.series-models)
2026-10-27created (prod.megger-delta4000.spec.test-frequency-range)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.test-frequency-range)
2026-10-27created (prod.megger-delta4000.spec.weight)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.spec.weight)
2026-10-27created (prod.megger-delta4000.standard.en-61326-1)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.standard.en-61326-1)
2026-10-27created (prod.megger-delta4000.standard.iec-61010-1)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.standard.iec-61010-1)
2026-10-27created (prod.megger-delta4000.standard.iec-68-2-31)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.standard.iec-68-2-31)
2026-10-27created (prod.megger-delta4000.title)
2026-10-27review_status unreviewed -> software_reviewed (prod.megger-delta4000.title)

Cite this page

Cite the governing standard for the fact itself; cite this page as the finding aid.

"Megger DELTA4000." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/products/megger-delta4000/.