Test Instrument Reference

Doble ATRT-03 S2

Updated 2026-10-27

Doble ATRT-03 S2, transformer turns ratio tester
Image: Doble, from its product page (www.doble.com)

Specifications

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

Dimensions
18 in W x 7 in H x 15 in D (45.7 cm x 17.8 cm x 38.1 cm)
Display
back-lit LCD, 128 x 64 pixels
Excitation current range
0 to 1 A, accuracy ±0.1 mA, ±2% of reading (±1 mA)
Input power
100 to 240 Vac, 50/60 Hz
Operating temperature
-10 C to +50 C (+15 F to +122 F)
Phase angle
0 to 360 degrees, accuracy ±0.2 degree (±1 digit)
Test voltages
8 Vac at 1.0 A, 40 Vac at 0.2 A, 100 Vac at 0.1 A
Turns ratio accuracy
8 Vac: 0.8 to 1,000 (±0.08%), 1,001 to 4,000 (±0.1%), 4,001 to 15,000 (±0.25%); 40 Vac and 100 Vac: 0.8 to 1,000 (±0.05%), 1,001 to 4,000 (±0.1%), 4,001 to 15,000 (±0.2%)
Turns ratio range
0.8 to 15,000:1
Weight
9 kg

Data records

  • The manufacturer's page for the ATRT-03 S2 was read on the date given in the value. Value: 2026-10-27. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.checked
  • The manufacturer lists the ATRT-03 S2 as an automatic, microprocessor-based, three-phase transformer turns-ratio tester. Value: transformer turns ratio tester. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.class
  • The ATRT-03 S2 provides load tap changer control, name-plate ratio calculation and a computed ratio error. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.function.ltc-control
  • The ATRT-03 S2 displays the turns ratio, the excitation current and the phase angle for each test. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.function.readings-displayed
  • The ATRT-03 S2 stores test records and test plans internally, transfers them by USB flash drive and prints results on an optional built-in thermal printer. Source: Doble datasheet, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.function.records-and-plans
  • The ATRT-03 S2 automatically detects and tests transformer winding configurations defined under ANSI, IEC and Australian standards. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.function.transformer-type-detection
  • The ATRT-03 S2 applies an excitation test voltage to the primary windings, senses the induced secondary voltage and calculates the turns ratio. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.function.turns-ratio
  • The ATRT-03 S2 is a product of Doble. Value: Doble. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.manufacturer
  • The manufacturer gives the model designation as ATRT-03 S2. Value: ATRT-03 S2. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.model
  • Doble maintains a product page for the ATRT-03 S2 on its own website, which is the page cited for this entry. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.product-page
  • The manufacturer states the dimensions of the ATRT-03 S2 as width by height by depth. Value: 18 in W x 7 in H x 15 in D (45.7 cm x 17.8 cm x 38.1 cm). Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.dimensions
  • The manufacturer states the display type and pixel count of the ATRT-03 S2. Value: back-lit LCD, 128 x 64 pixels. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.display
  • The manufacturer states an excitation current reading range and accuracy for the ATRT-03 S2. Value: 0 to 1 A, accuracy ±0.1 mA, ±2% of reading (±1 mA). Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.excitation-current-range
  • The manufacturer states an input power supply for the ATRT-03 S2. Value: 100 to 240 Vac, 50/60 Hz. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.input-power
  • The manufacturer states an operating temperature range for the ATRT-03 S2. Value: -10 C to +50 C (+15 F to +122 F). Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.operating-temperature
  • The manufacturer states a phase angle measurement range and accuracy for the ATRT-03 S2. Value: 0 to 360 degrees, accuracy ±0.2 degree (±1 digit). Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.phase-angle
  • The manufacturer states three selectable test voltages for the ATRT-03 S2, each with its test current. Value: 8 Vac at 1.0 A, 40 Vac at 0.2 A, 100 Vac at 0.1 A. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.test-voltages
  • The manufacturer states a typical turns-ratio accuracy for the ATRT-03 S2 by ratio band and test voltage. Value: 8 Vac: 0.8 to 1,000 (±0.08%), 1,001 to 4,000 (±0.1%), 4,001 to 15,000 (±0.25%); 40 Vac and 100 Vac: 0.8 to 1,000 (±0.05%), 1,001 to 4,000 (±0.1%), 4,001 to 15,000 (±0.2%). Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.turns-ratio-accuracy
  • The manufacturer states a turns-ratio measuring range for the ATRT-03 S2. Value: 0.8 to 15,000:1. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.turns-ratio-range
  • The manufacturer states a weight for the ATRT-03 S2. Value: 9 kg. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.spec.weight
  • The manufacturer states the ATRT-03 S2 determines the transformer turns ratio by the method of IEEE C57.12.90, with no edition given. Value: IEEE C57.12.90. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.standard.ieee-c57-12-90
  • The datasheet states the ATRT-03 S2 is designed to IEC 61010 (1995), UL 61010A-1 and CSA C22.2 for safety, with no edition given for the latter two. Value: IEC 61010 (1995); UL 61010A-1; CSA C22.2. Source: Doble datasheet, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.standard.safety
  • The catalog name of the model is written Doble ATRT-03 S2. Value: Doble ATRT-03 S2. Source: Doble product page, web page edition. Verified 2026-10-27. Record prod.doble-atrt-03-s2.title

Sources

  • Doble datasheet, ATRT-03 S2 datasheet (NT2025), web page edition, Doble. Held as: Public page. Publisher page
  • Doble product page, ATRT-03 S2 - Doble Engineering Company, web page edition, Doble. Held as: Public page. Publisher page
Changelog (46 entries)
DateRevisionChange
2026-10-27created (prod.doble-atrt-03-s2.checked)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.checked)
2026-10-27created (prod.doble-atrt-03-s2.class)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.class)
2026-10-27created (prod.doble-atrt-03-s2.function.ltc-control)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.function.ltc-control)
2026-10-27created (prod.doble-atrt-03-s2.function.readings-displayed)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.function.readings-displayed)
2026-10-27created (prod.doble-atrt-03-s2.function.records-and-plans)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.function.records-and-plans)
2026-10-27created (prod.doble-atrt-03-s2.function.transformer-type-detection)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.function.transformer-type-detection)
2026-10-27created (prod.doble-atrt-03-s2.function.turns-ratio)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.function.turns-ratio)
2026-10-27created (prod.doble-atrt-03-s2.manufacturer)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.manufacturer)
2026-10-27created (prod.doble-atrt-03-s2.model)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.model)
2026-10-27created (prod.doble-atrt-03-s2.product-page)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.product-page)
2026-10-27created (prod.doble-atrt-03-s2.spec.dimensions)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.dimensions)
2026-10-27created (prod.doble-atrt-03-s2.spec.display)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.display)
2026-10-27created (prod.doble-atrt-03-s2.spec.excitation-current-range)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.excitation-current-range)
2026-10-27created (prod.doble-atrt-03-s2.spec.input-power)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.input-power)
2026-10-27created (prod.doble-atrt-03-s2.spec.operating-temperature)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.operating-temperature)
2026-10-27created (prod.doble-atrt-03-s2.spec.phase-angle)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.phase-angle)
2026-10-27created (prod.doble-atrt-03-s2.spec.test-voltages)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.test-voltages)
2026-10-27created (prod.doble-atrt-03-s2.spec.turns-ratio-accuracy)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.turns-ratio-accuracy)
2026-10-27created (prod.doble-atrt-03-s2.spec.turns-ratio-range)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.turns-ratio-range)
2026-10-27created (prod.doble-atrt-03-s2.spec.weight)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.spec.weight)
2026-10-27created (prod.doble-atrt-03-s2.standard.ieee-c57-12-90)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.standard.ieee-c57-12-90)
2026-10-27created (prod.doble-atrt-03-s2.standard.safety)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.standard.safety)
2026-10-27created (prod.doble-atrt-03-s2.title)
2026-10-27review_status unreviewed -> software_reviewed (prod.doble-atrt-03-s2.title)

Cite this page

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

"Doble ATRT-03 S2." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/products/doble-atrt-03-s2/.