MEGABRAS MTD-20KWe, Руководство пользователя

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2.2. Output Terminals
~
Green E (E
XC
) Terminal – Earth Electrode
Black ES (E
XT
) Terminal – Voltage Electrode
Blue S (E
T
) Terminal – Voltage Electrode
Red H (E
C
) Terminal – Current Injection
E
- ES - S - H: Standard nomenclature currently recommended by the IEC.
E
XC
- E
XT
- E
T
- E
C
: Nomenclature traditionally used by Megabras earth
meters. It is maintained to make migration easy.
Having the function selector switch in the R position (grounding resistance
measurement) the E and ES terminals are internally shorted. The ES
terminal is not used for this measurement.
2.3. Internal battery
The MTD-20KWe has a built-in rechargeable battery. Furthermore, it can be
powered by means of an external 12 V battery.
2.4. Battery status check
~
Before starting each test, it is recommended to check if the internal battery
has enough charge. This can be done by pressing the
Battery Test
Pushbutton
+
. The value shown on the display must be higher than
1000 . If it is not, the battery needs to be charged. This checking can be
repeated during measurements, under the equipment highest consumption
conditions.
2.5. Power supply source
~
The power supply source provided can be connected to 220-240 V~ mains.
It is used to charge the battery.