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/ Transformer Winding Resistance Meter (Model :TWRM-10AuP) |
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Transformer Winding Resistance Meter |
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Model : TWRM-10AuP |
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Introduction Transformer Winding Resistance Meter is
designed to measure the winding resistance of transformers, Inductors,
generators and motor windings, Tap Changers Etc.It is specially designed for
Highly Inductive objects like 400KV/220KV.Special care is taken for measuring 3
phase transformers by using band switch matrix, to avoid climbing on
transformers for safe & measurements. This is only indigenous TWRM which gives
very fast readings for 3Phase Star-Delta any combination Transformers.
The built in open circuit Voltage of DC Supply ensures that
core of the transformer is saturated for fast measurements to be taken. Care is
taken to absorb the Back emf of such transformers. For user safety, Indication
for discharges is provided on front panel , if the current through winding under
measurement is disturbed/discontinued. Instrument has
built in 10A regulated and highly stable current source with current selection
of 10Amp,1Amp, 0.1Amp & 0.01Amp.
Instrument uses ratio-metric circuit where the resistance of specimen is
compared with known internal standard and 4 ½ digit LED/LCD display is provided
for resistance measurement in milliohms and in ohms. |
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SPECIAL FEATURES |
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Easy & Fast switching for 3 phase to avoid changing
Primary-Secondary, Band switch is provided on front panel. Regulated and highly stable 25Amp, 10 Amp, 1Amp,0.1Amp &
0.01Amp current
source. 4½ digit LED/LCD display. Simultaneous measurements of voltage & current. True four terminal measurement. Resolution of 0.1 micro ohm Protection against inductive kickback and discharge. Visual indication for discharge. Line voltage interference suppression , making
instrument most suitable for
field applications. Light weight with carrying case & with 10 meter leads. Light weight with carrying case & with 10 meter leads. Inbuilt Printer, RS232 port , Data acquisition software.
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TECHNICAL SPECIFICATIONS |
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POWER SUPPLY |
230V AC ±10% , 50Hz |
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TEST CURRENT |
10 Amp , 1Amp , 0.1Amp & 0.01Amp |
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RANGES |
0.1u ohm to 200 ohms in 6 Ranges |
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INDICATION |
4 ½ Digital panel meter LED/ LCD
( 5 Decades i.e.20000 count) |
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RESOLUTION |
0.1 micro ohm on 2 milli ohm range |
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ACCURACY |
0.5% ± 1 digits over the entire range. |
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OPTIONAL |
RS232 Port, Inbuilt printer, Data Acquisition Software |
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CONTROLS |
Power On Switch.
Current Range selection switch.
Matrix Switching for winding selection. |
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DIMENSIONS |
L=440x B=350x H= 150mm ± 10mm |
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WEIGHT |
Approx. 20Kg |
| To keep pace with the latest technology
Sivananda Electronics reserves the right to update it's system.
Hence, information in the brochure is likely to change without
notice. |
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