Manual

REV 7 ATRT-03, ATRT-03A, AND ATRT-03B USER’S MANUAL

1.2 Technical Specifications

1.2.1. ATRT-03 Technical Specifications

Table 1. ATRT-03 Technical Specifications

TYPE Portable, lightweight, automatic, three-phase transformer turns-ratio meter

PHYSICAL SPECIFICATIONS 17”W x 7”H x 13”D (43.2cm x 17.8 cm x 33.0 cm); Weight: 14 lbs (6.4 kg)

INPUT POWER 3 amps, 110 – 120 Vac or 220 – 240 Vac (selectable), 50/60 Hz

MEASUREMENT METHOD ANSI/IEEE C57.12.90

RATIO-MEASURING RANGE 0.8 – 15,000 (5-digit resolution)

TURNS-RATIO ACCURACY 0.8 – 1999: ±0.1%, 2,000 – 3,999: ±0.25%, 4,000 – 15,000: ±1% @ 8 Vac

0.8 – 1999: ±0.1%, 2,000 – 3,999: ±0.20%, 4,000 – 15,000: ±1% @ 40 Vac

0.8 – 1999: ±0.1%, 2,000 – 3,999: ±0.15%, 4,000 – 15,000: ±1% @ 100 Vac

ADJUSTMENT None required

TEST VOLTAGES 8 Vac @ 1 amp, 40 Vac @ 0.6 amp, 100 Vac @ 0.1 amp

EXCITATION CURRENT

READING RANGE

0 – 2 Amperes; Accuracy: ±1mA, ±2% of reading (±1 digit)

PHASE-ANGLE

MEASUREMENT

0 – 360 degrees; Accuracy: ±0.2 degrees ( ±1 digit)

DISPLAY Back-lit LCD screen (20 Characters by 4 Lines); Viewable in bright sunlight

and low-light levels

PRINTER Built-in 4.5-inch wide thermal printer

COMPUTER INTERFACE RS-232C (19,200 baud) port

PC SOFTWARE Windows

XP/Vista-based Transformer Turns-Ratio Analyzer application is

included with purchase price

INTERNAL TEST RECORD

STORAGE

Stores 200 complete transformer test records. Each test record includes

nameplate voltage, winding turns-ratios, excitation current, and winding

phase angle.

INTERNAL TEST PLAN

STORAGE

Stores up to 128 transformer test plans

SAFETY UL Certified (UL 61010A-1), CAN/CSA Certified (C22.2 No. 1010.1-92)

ENVIRONMENT Operating: -10° to 50° C (15° to +122° F); Storage: -30° C to 70° C (-22° to

+158° F)

HUMIDITY (MAX) 90% RH @ 40˚ C (104˚ F) non-condensing

ALTITUDE (MAX) 2000m (6562 ft) to fully safety specifications

CABLES One 15-foot single-phase cable set, One 15-foot 3-phase cable set, One 25-

foot extension cable set, One cable-carrying duffel bag included

OPTIONS Transportation case, transformer tap-changer remote control device

WARRANTY One year on parts and labor

NOTE

The above specifications are valid at nominal operating voltage and at a

temperature of 25°C (77°F). Specifications may change without prior notice.