Hioki 3332 - Page 62

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4.7 Setting the PT (Potential Transformer) Ratio, CT (Current Transformer) Ratio, and SC (Scaling Factor)
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ENTER
▼
▲
Moving digits
Moving decimal
point
NOTE
Display:
Supplement
Key Key operation
AVE･FREQ
COMP1
COMP2
D/A
INTEG
PRINT
RANGE SEL
INTERFACE
Moves to each setting screen.
1. Using the ▲ or ▼ Setup key, set the PT ratio on display a, CT ratio on
display b, and SC on display c, when the value is flashing.
① To set the PT ratio, raise or lower the flashing value indicated in display
a by using the ▲ or ▼ keys.
② To set the CT ratio, raise or lower the flashing value indicated in display
b by using the ▲ or ▼ keys.
③ To set the SC, raise or lower the flashing value indicated in display c by
using the ▲ or ▼ keys.
2. To move the flashing digit, press the or key.
To move the flashing decimal point, use the ▲ or ▼ key,
3. Press the
ENTER
key, and the flashing will stop and the setting will be
decided.
Unless this operation is done, the internal setting cannot be changed.
At this time, if the PT ratio, CT ratio, or SC is other than 1, the SC (scaling)
indicator is lit.
If the settings need to be changed again, press either the , , ▲, ▼ keys
and the flashing points will reappear.
(3) Move onto the measurement display.
Press the
PT
･
CT
･
SC
or
EXIT
key.
･ Setting limits of PT/CT/SC are 0.001 to 9999.
･ If the value is set to 0, such as "0.000", it is forcibly set to 1.000 when
pressing the
ENTER
key.
･ If the value exceeds 99999M at 130%f.s. input, the indication shown on the
left will be displayed. (Means scaling error)
･ When the active and apparent power become scaling error, the reactive
power, power factor, phase angle and power integration value are also
scaling error. However, when becomes out of range, "o.r" is displayed.
When scaling error occurs, D/A output still follows the input signal.
Other keys operations in PT/CT/SC Setting mode
(SHIFT indicator is lit):
Depending on the combination of PT, CT and SC ratios, the displayed
resolution may become very low, or fixed at 0.0000 m.
(Example: Display of power when 15 V, 1 mA range, PT, CT, SC are 0.001)
However, D/A output still follows the input signal.