Hioki PQ3100 User Manual

65
Measurement Settings
4
Enables you to set if an external VT is being used.
Variable (0.01 to 9999.99), 1, 60, 100, 200, 300, 600, 700, 1000, 2000, 2500, 5000
While taking measurements on the secondary side of a voltage transformer (VT), if you set the VT
ratio, you can display the voltage value by converting it to primary-side voltage values.
Example: If the voltage on primary side of a VT is 6.6 kV and the voltage on secondary side is 110 V
then the VT ratio = 60 (6600 V / 110 V)
As the voltage range of 1000 V is xed, it would be multiplied by the VT ratio of 60 to obtain a
voltage range of 60 kV.
5
When connecting the optional current sensor
If you press the [F3] (sensor) key, the current sensor and the maximum current range will be set
automatically.
Check the current value (RMS value) and select an appropriate current range.
When connecting current sensors other than the optional sensors
The sensor and the range will not be set automatically. See the following table and select the
compatible optional current sensor.
Check the current value (RMS value) and select an appropriate current range.
Current sensor
Current range
Optional
Other than the
optional
AC exible current sensor
CT7044
CT7045
CT7046
CT9667-01*
CT9667-02*
CT9667-03*
5000A, 500A, 50A
AC leakage current sensor CT7116
9657-10
9675
5A, 500mA, 50mA
AC current sensor
CT7126
9694
9695-02
50A, 5A, 500mA
CT7131
9660
9695-03
100A, 50A, 5A
CT7136 9661 500A, 50A, 5A
AC/DC auto-zero current sensor
CT7731
-
100A, 10A
CT7736
-
500A, 50A
CT7742
-
2000A, 1000A, 500A
Clamp on sensor 9669 9669 1000A, 100A
*: Set the range switch of the sensor to 500 A when the current range of this instrument is set to
500 A or 50 A.
When measuring power lines that use multiple channels
Combine the multiple types of the current sensor.
Example: Use current sensors of the same type from CH1 to CH3 for the 3-phase 4-wire system.
Selecting an appropriate current range
Set the current range based on the anticipated maximum load current that will generate during the
measurement. (Refer to the operating status, load rating, breaker rating, and other data to make this
determination.)
If the range is too low, then an over-range current will be generated during measurement, and
accurate measurement will not be possible.
And if the range is too high, then errors will increase and accurate measurement will not be possible.
6
The present current value will be displayed.
5
Setting Change (SET UP Screen)

Hioki PQ3100 Specifications

General

Brand	Hioki
Model	PQ3100
Category	Measuring Instruments
Language	English