Baker D12R User Manual

“The “D” Series
Testers simplifies
the on-going
need for motor
insulation
testing.”

D12R/D6R/D3R Digital
Winding Tester

The D12R/D6R/D3R is the newest digital tester offered by Baker Instrument
Company, an SKF Group Company. This instrument is designed to maximize
testing capabilities in a lightweight, sturdy format. Additional testing capabilities
have been added to the tester, to make it a more comprehensive tool for
predictive maintenance. As with the other Digital testers, the new
D12R/D6R/D3R’s high precision testing capabilities allows data collection in the
shop or the field. The results can then be printed immediately or stored for later
use. This tester demonstrates our continual commitment to motor integrity and
Insulation testing.

an SKF Group Company

Resistance, HiPot and Surge in one

Tester

applied to other motors besides simple induction
motors. The D Series can be used to test all the

With the D12R/D6R/D3R Digital Winding Tester
from Baker Instrument Company, an SKF Group
Company, you can perform Resistance, HiPot
and Surge tests, as well as digitize and store data
for future use.

The Resistance Test verifies the existence of dead
shorts within the turn-to-turn coils, shows any
imbalances between phases due to turn count
differences, along with locating poor wire
connections or contacts.

rotating fields of a synchronous motor by storing
the waveform from a surge test on one coil, and
comparing that waveform to a waveform from
every other coil. The Digital Winding Tester can
also be used on DC armatures and fields. The
resulting waveform can then be compared to all
other bar-to-bar or span tests to detect a
winding fault.

Test results from up to 10 motors in the field can
be stored, retrieved, printed, and uploaded to a
desktop program for file management and
analysis. Each of these 10 motor records has its
own memory location. Each location can store
up to three surge wave patterns plus DC HiPot

DC HiPot testing detects faults in
groundwall/earth insulation, and also provides
a complete Polarization Index test. The
groundwall/earth insulation system consists of
the wires insulation, slot liner insulation, wedges,
varnish, and sometimes phase paper.

Surge testing detects faults in both inter-turn
winding and phase-to-phase insulation systems.

test voltage and current.

Using advanced analog-to-digital conversion
hardware, the “D” series captures the surge test
waveform, remembers it, displays it indefinitely,
and prints it to the included ink jet printer. This
surge waveform storage capability can be