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| TRF-250 Automatic,3-Phase Transformer Ratio Finder
----------部分中文介绍产品已停产或参数有变更，内容仅供参考。 |
TRF-250
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Automatic, 3-Phase Transformer Ratio Finder
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Part Number(s)
9105-UC [TRF-250]
9105-PR [TRF-250 built-in thermal printer option]
9105-SC [TRF-250 shipping case]
Download Links
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The TRF-250 is Vanguard's fourth generation transformer turns ratio tester. This latest design provides a higher turns-ratio test voltage of 250Vac, provides a wireless Bluetooth PC interface, and features a 44-key "QWERTY"-style membrane keyboard. All these features greatly improve the accuracy of the turns ratio readings, ease of operation, and reliability.
The TRF-250 determines the turns ratio of the transformer under test using the measurement method. The turns-ratio range is from 0.8 to 50,000 to 1. Transformer turns ratio, excitation current, and winding polarity are displayed on the built-in 128 x 64 pixels graphic LCD screen. The TRF-250 can be used as a standalone unit or can be computer-controlled.
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- Ratio Range: 0.8 - 50,000 to 1
- Capable of detecting 130 different 3-phase transformer types defined by
- 4 test voltages: 4Vac, 40Vac, 100Vac, and 250Vac
- Phase angle and excitation current measurement
- Bluetooth and USB PC interfaces
- 4.5-inch wide thermal printer (optional)
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TRF-250
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Cables
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TRF-250
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Technical Specifications
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| 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) |
| OPERATING VOLTAGE |
100 – 240 Vac, 50/60 Hz |
| MEASUREMENT METHOD |
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| TURNS-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% @ 4 Vac
0.8 – 1,999: ±0.1%, 2,000 – 3,999: ±0.20%, 4,000 – 14,999: ±1%, 15,000 – 50,000: ±1.5% @ 40 Vac
0.8 – 1,999: ±0.1%, 2,000 – 3,999: ±0.20%. 4,000 – 14,999: ±1%, 15,000 – 50,000: ±1.5% @ 100 Vac
0.8 – 1,999: ±0.1%, 2,000 – 3,999: ±0.15%. 4,000 – 14,999: ±0.8%, 15,000 – 50,000: ±1.2% @ 250 Vac |
| 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: ±0.1 mA, ±2% of reading (±1 mA) |
| PHASE-ANGLE MEASUREMENT |
0 – 360 degrees; Accuracy: ±0.2 degree ( ±1 digit) |
| DISPLAY |
Back-lit LCD screen (128 x 64 pixels) viewable in bright sunlight and low-light levels |
| PRINTER |
Optional built-in 4.5-inch wide thermal printer |
| COMPUTER INTERFACES |
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) |
| 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 Bluetooth/USB port or via the USB Flash drive interface |
| PC SOFTWARE |
Windows?-based Transformer Turns Ratio Analyzer application is included with purchase price |
| LOAD TAP CHANGER CONTACT |
240 Vac, 2 Amps |
| SAFETY |
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| ENVIRONMENT |
Operating: -10? to 50? C (15? to +122? F); Storage: -30? C to 70? C (-22? to +158? F) |
| CABLES |
One 15-foot (4.57m) single-phase set, one 15-foot (4.57m) 3-phase set, one 25-foot (7.62m) extension set, one safety ground, one USB, cable bag |
| OPTIONS |
Transportation case |
| WARRANTY |
One year on parts and labor |
Specifications are valid at nominal voltage and ambient temperature of +25?C (+77?F).
Last updated on February 16, 2009 |
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