ZXR-40A
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Thank you very much for selecting our products
!
For your better use of this instrument, you are kindly requested to read
this manual carefully before you use it, so as to understand its major
performances and operation method.
Caution
:
①
It is not allowed to remove the wiring and directly switch off
the power supply during the measurement.
②
For the no-load voltage regulating transformer, it is not
allowed to switch the tapping switch during the
measurement.
③
In case of a sudden power failure during the measurement,
this instrument can discharge automatically. Please do not
remove the wiring immediately. Wait for at least 30 seconds
before the connection can be removed.
④
The three-phase measurement applies to the windings of YN
connection. For the windings of yn connection, since
difference exists between the three-phase and single-phase
measurement results due to the effect of the resistance of the
copper bus connected, the single-phase measurement is
recommended.
⑤
Caution: The three-phase measurement result doses not
include the resistance value of the neutral lead. Therefore, it
is suggested to at least verify one data using the single-phase
testing method for each phase after completing the
measurement of three-phase resistance value, so as to
determine if the neutral lead is normal.
1. General
This fast DC resistance tester (hereinafter referred to as DC resistance tester) is the product of the
latest generation for measuring the DC resistance of transformer and is optimally designed for
measuring the DC resistance of the three-phase winding of the large-capacity transformer. It can
measure the DC resistance of the three-phase winding at the same time. In case of the on-load
voltage regulating transformer, it is not required to discharge but to directly adjust the tapping
switch. The measurement time is one third of the traditional single-phase measurement, greatly
shortening the working time and labor intensity. As the DC resistor tester is provided with
large-screen LCD and the graphical interfaces, the operation is visual, clear and easy. Besides, it
