-15-
measured secondary current value is converted to
be 5A, and then convert the first current based on
that multiple, which is same with transformation
ratio. Display
【
XXX/5A
】
【
Ratio
】
: The ratio between the first current and
secondary current by actual measurement.
【
10kV-YYconversion ratio
】
: high voltage
detector collects the secondary bus current,
Th
e ratio between transformer’s first current and
mutual inductor secondary current could be
calculated by transformer 10kV/380V
As above described, concerning high voltage detector
and the first and secondary return circuit clamped by low
voltage current pliers , the main set has an indication of the
first and secondary current number and transformation ratio, if
the first current is 680A, the secondary current is 2.00A,its
current ratio is 340.0, calculated based on the secondary loop
circuit 5A,the transformation ratio is 1700/5A
，
(which is
5÷2×680
）
,the 10kV/380V transform has a transformation ratio
of 12.9, the first current to the secondary current of mutual
inductor (which is 340÷(10kV÷380V
））
①
Detection display mode
②
Conversion ratio display mode
In detection mode, press the
HOLD
key for 3 seconds,
enter the conversion display mode as shown above on the
right diagram: the first, second loop current.10kV-YY
conversion ratio. Press the
HOLD
key for 3 seconds, exit from
the conversion ration display mode, and return to the start-up
