4 . OPERATION
4-1
NAME OF PARTS & EXPLANATION
①
Clamp CT
: Sensor for detection of current
②
Open/Close Lever
: By pushing this lever, CT will open.
③
Power On/Off Switch
: By press one time, power will be "on" and the displayed
value will be Io at the selected range. The setting of
circuit is "1
φ
" and "1
φ
/Ir" is lightening.
By press again, power will be "off". (Power will be "off"
automatically approx. 10 minutes after final key
operation).
④
Range Switch
: Manual range switch for the selection of current
40mA, 400mA, 4A, 40A, 300A and voltage 500V.
⑤
Data Hold Switch
: By press one time, "DH" sign will be displayed on LCD
and the displayed value will be held.
By press once again, this function will be released.
⑥
Ior SELECT Switch
: To select the circuit to be measured (single phase or three
phase). By press one time, the display will be changed
("1
φ
/Ir" is for single phase and "
△
/Ior" is for three
phase).
⑦
Harmonics Switch
: At the measurement of Io current or voltage, "Harmonic
No.1" mark will be displayed on LCD by press this switch
one time (the value is fundamental harmonics current).
