Transformers Ratio Finder TTRF-250 Amperis

TTRF-250’s Specifications

Type

Portable, lightweight, automatic, 3-phase transformer turns-ratio meter

Physical specifications

18”W x 5”H x 12”D (45.7 cm x 12.7 cm x 30.5 cm ); Weight: 20 lbs (9.1 kg)

Input power

100 - 240 Vac, 50/60 Hz

Measurement method

ANSI/IEEE C57.12.90

Ratio measuring range

0.8 - 50,000 to 1

Turns ratio accuracy

0.8 - 1,999: ±0.1%, 2,000 - 3,999: ±0.25%. 4,000 - 14,999: ±1%, 15,000 - 50,000: ±2% @ 4Vac
0.8 - 1,999: ±0.1%, 2,000 - 3,999: ±0.20%. 4,000 - 14,999: ±1%, 15,000 - 50,000: ±1.5% @ 40Vac
0.8 - 1,999: ±0.1%, 2,000 - 3,999: ±0.20%. 4,000 - 14,999: ±1%, 15,000 - 50,000: ±1.5% @ 100Vac
0.8 - 1,999: ±0.1%, 2,000 - 3,999: ±0.15%. 4,000 - 14,999: ±0.8%, 15,000 - 50,000: ±1.2% @ 250Vac

Test voltages

4 Vac @ 1 Amp, 40 Vac @ 200 mA, 100 Vac @ 100 mA, 250 Vac @ 50 mA

Excitation current reading range

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

Phase angle measure

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

Display

Back-lit LCD screen (128 x 64 pixels) viewable in bright sunlight and low-light levels

Printer

Built-in 4.5-inch wide thermal printer

Computer interface

Bluetooth, USB port

External data storage

One USB Flash drive interface port; Up to 999 transformer test records can be stored on a USB Flash drive (not included)

Pc software

Windows®-based Transformer Turns-Ratio Analyzer application is included

Internal test record storage

Can store 112 transformer test records internally. Each record holds the test record header and up to 99 readings.

Internal test plan storage

Can store 128 transformer test plans internally. Test plans can be transferred to the unit from the PC via the Bluetooth/USB port or via the USB Flash drive interface

Load tap changer contact

240 Vac, 2 Amps

Safety

Designed to meet UL 61010A-1 and CAN/CSA C22.2 No. 1010.1-92 standards

Environment

Operating: -10°C to +50°C (+15°F to +122°F); Storage: -30°C to +70°C (-22°F to +158°F)

Humidity

90% RH @ 40°C (104°F) non-condensing

Altitude

2000 m (6,562 ft) to full safety specifications

Cables

One 15-foot single-phase set, one 15-foot 3-phase set, one 25-foot extension set, one safety ground, one USB, cable bag

Optional accessories

Transportation case

Warranty

1 year on parts and labor