BizLine BIZ 780 311 Manual De Instrucciones página 6

EN
Note: For measuring three-phase AC system, connect three measuring terminals to the corresponding
terminal of three-phase system and, since the tester has only two test pen terminals, it is required to
form the reference terminal by holding tester handle with finger (through the ground), therefore it would
not accurately indicate the phase sequence of three-phase system if not holding the handle or wearing
insulating gloves. ln addition, it is necessary to ensure the earth terminal (earth wire or shell) of three-phase
system in contact with human body while measuring three-phase power system lower than 100V.
7. RCD test
To reduce disturbance voltage during voltage measurement, a circuit with impedance lower than the tester
under normal measurement mode may be provided between two test pens, namely the RCD circuit system.
For RCD trip test, connect two test pens to the L and PE terminal of 230Vac system under normal voltage
measurement mode and press RCD key • } «on two test pens, RCD system would trip and the RCD
symbol would be illuminated if the circuit then generates AC current higher than 30mA. Particularly, if RCD
cannot measure for a long time and, at 230V, the testing time should be <10s, cannot conduct continuous
measurement and, after once test, wait 60s before next measurement.
Note: ln case of no measurement or test, it is normal to have continuously illuminated LED and continuous
beeping buzzer after simultaneously pressing RCD keys on two test pens. To avoid functional disorder, do
not press two RCD keys under non-RCD testing mode.
8. Silent mode selection
lt is allowed to enter the silent mode while tester is under standby mode or normally used. After pressing
flashlight key about 1s, tester would bleep and LCD displays silence symbol «®», and tester enters silent
mode and, under which mode, all functions are similar to those under normal mode, with exception to the
silent buzzer.
To resume normal mode (buzzing mode), press flashlight key about 1s and, after «bleeps», the silence
symbol «®» on LCD would disappear.
9. Application of illumination function
Illumination function may be selected if need to use the tester at night or in a dark environment; after light
touch on flashlight button on tester panel, the headlamp on the top of tester would be turned on to facilitate
your operation and, after operation, turn off the light with a light touch on the button.
10. Application of backlight
LCD display data may be hard to read at night or in a dark environment, allow the display clearly visible
by turning on backlight on tester. Backlight would be turned on after pressing HOLD about 1s and, after
operation, turn off the light after pressing HOLD about 1s. If tester enters standby mode while backlight
is on, the light would remain illuminated when tester is awakened. The backlight cannot be turned off
unless pressing HOLD about 1s again.
11. Application of HOLD function
To facilitate reading and recording, hold the measured data (voltage and frequency value) by a light touch
on HOLD on tester while using tester; after another light touch, hold status is relieved and restores to
normal testing status.
12. Battery replacement
Before using the voltage detector, touch and hold the two probe tips together. If ••1> shows and you hear
the beeper, or in the silent mode, •11) is on. This makes sure that the battery source is not exhausted
otherwise, the battery source is exhausted.
Low-voltage symbol on LCD during use of tester indicates low-battery voltage and the necessity of battery
replacement.
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