SIVA INSTRUMENTS Transformer Winding Resistance Meter Model

SIVA INSTRUMENTS Transformer Winding Resistance Meter Model
SIVA INSTRUMENTS
Transformer Winding
Resistance Meter
Model :TWRM-10A
Features
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 30 Volts 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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Easy & Fast switching for 3 phase to
avoid changing Primary-Secondary,
Band switch is provided on front panel.
Regulated and highly stable 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.
Optional Inbuilt Printer, RS232 port ,
Data acquisition software.
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Specifications
POWER SUPPLY
240V AC ±15% , 50Hz ±5%, single phase.
TEST CURRENT
10 Amp ,1Amp,0.1Amp & 0.01Amp
RANGES
200 u ohms to 200 ohms in 6 Ranges
INDICATION
4 ½ Digital panel meter LED/ LCD
RESOLUTION
0.1 micro ohm on 2 milli ohm range
ACCURACY
0.5% ± 1 digits over the entire range.
CONTROLS
Power On Switch.
Current Range selection switch.
Matrix Switching for winding selection.
DIMENSIONS
L=440x B=350x H= 150mm ± 10mm
WEIGHT
Approx. 20Kg
SIVANANDA ELECTRONICS
DEEPAK MAHAL, LAM ROAD, DEVLALI-422 401, NASHIK. MAHARASHTRA, INDIA.
Phone : 0253-2491423, 2491504, 2491816 E-mail : mkb@sivanandaelectronics.com Fax: 0253-2492291
MUMBAI : 208, MIDAS Sahar Plaza Complex, Andheri Kurla Road, Andheri (E) Mumbai 400059.
Ph: 56430590, Fax : 28389232.
NEW DELHI : G -145, KALKAJI, NEW DELHI -110 019. •PHONE : 6221582, 6434442
BANGALORE : 44/2, DICKENSON ROAD, BANGALORE - 560 042 •PHONE : 5585673
HYDERABAD : 310, JAMUNA MANSION, CHIRAG ALI LANE, ABIDS, HYDERABAD-500 001. •PHONE : 23202943
MFRS. OF : ELECTRONIC INSTRUMENTS, METAL DETECTORS, TURNSTILES, COMPUTERISED ATTENDANCE RECORDING & ACCESS CONTROL
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