Power Supply; Battery Operation; Introduction; Battery Status And Automatic Shutoff - Megger EZ-ThumpV3 User Manual

Power Supply

Battery Operation

Introduction

Charging Status, Battery Status and Automatic Shutoff
EZTV3-UG-EN-V01 Feb 2022
All EZTV3-3/4/12 MODELS, besides operating of line voltage, are equip-
ped with an internal battery, and if fully charged, the units can deliver up to
400 HV discharges (thumps) at full voltage (in each range). This approxima-
tely equals 1 hour of thumping (pin-pointing) at full energy at the minimum
required charging rate for the maximum voltage (1.5/3, 4 or 12kV).
The charger status indicator LED ⓬ is located on the front panel, just
below the AC receptacle, see photo below. The color of the LED changes
depending on the status, which is explained on the legend below the LED.
The battery status indicator bar ❾ shows 4 green bars for a fully charged
battery. After approx. 25 minutes of thumping at full energy 3 green bars
will be visible. After an additional 10 minutes, 2 yellow bars will appear.
After another additional 10 minutes the single red bar will be visible. The
times given are approximate values. The best indication of the true capacity
of the battery is when looking at the voltage recovery during the thump
operation. The highest energy draw is experienced at the end of the full
charging cycle of the capacitor when the largest charging energy is drawn.
Initially, it is expected that the battery might lose the 4
the capacitor charging cycle, but when finished, it should always recover to
the 4-bar state. The 25 minutes mentioned above means that after 25
minutes the voltage will not recover any more to the 4-bar status but
remains at 3 bars and show the same behavior as described above for the 4
bars, and so on.
⓫
⓬
❿
11
TECHNICAL DESCRIPTION
th bar at the end of
❾