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PORTABLE
TRANSFORMER RATIOMETER
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4167P Portable
Transformer Ratiometer. Portable Transformer Tester.
The Transformer Ratiometer Type 4167P measures the
transformation ratio of large transformers and also gives an
indication of any small phase difference between the high voltage and
low voltage windings (e.g. primary and secondary).
The ratio and phase difference or ratio and energizing voltage are
displayed on two large digital LCD displays with optional back light
for use in poor light conditions.
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Portable Transformer
Ratiometer
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| Our
Price: |
Contact us for
pricing |
| Phone:
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253-927-6186
866-318-6186 |
| Fax:
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253-927-6189 |
| email:
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sales@hotektech.com |
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In use the High Voltage winding of the transformer under test is
connected to the “H.V. Winding” terminals of the instrument and is energized
by the internal power oscillator at a nominal 60 Volts
AC./50Hz. The low voltage winding (Step down) is connected to the
“L.V. Winding” terminals.
The display of ratio and phase is then entirely automatic.
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Measurement technique
The measurement technique is to measure the H.V. and L.V. voltages
during several parts of the cycle to obtain in-phase and quadrature
values from which the ratio and phase difference are calculated.
The input circuits are isolated by transformers, therefore the
instrument should not be damaged by the very high voltages possible if
the connections from the transformer being measured are accidentally
reversed.
The measurement circuits are further protected by front panel fuses
with internal surge absorbers.
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Power Requirement
The 4167P
Portable Transformer Ratiometer is fitted with rechargeable batteries and has an internal
charger.
The instrument can be used connected to a mains power supply
or will operate from the internal batteries for a period of up to 8
hours from a full charge.
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Portable Transformer Ratiometer
Specification
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| Ratio range |
1:1 to 300:1 |
| Accuracy |
1:1 to 9.99:1 = 0.1%
10:1 to 99.99:1 = 0.1%
100:1 to 149.9:1 = 0.2%
150:1 to 300:1 = 0.5% |
| Resolution |
The ratio is displayed in one of 4
ranges
1:1 to 9.99:1 = 0.001
10:1 to 99.99:1 = 0.01
100:1 to 300:1 = 0.1% |
| Phase difference |
± with a resolution of 0.01
(approx. 0.5°) |
| Displays |
LCD with optional back light
Ratio 1.000 to 9998 (9999=over range)
Phase ± 0.000 to 198 (199=over range) |
| Measurement voltage |
Nominally 60V at power frequency
dependent on load |
| Input protection |
Front panel fuses and internal surge
absorbers |
| Power supply |
AC mains 50 – 60 Hz
Universal input of 90 – 260 Volts AC |
| VA rating |
Approximately 20VA |
| Dimensions |
470 x 150 x 280mm |
| Net Weight |
Approximately 8kg |
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