Operation; Live Circuit Warning; Voltage Testing; Auto-Shut Off - Megger BMM500 Serie Guia Del Usuario

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Operation

Refer to Safety Warnings before using
the instrument
Testing is automatically inhibited if:
An external voltage >55V is present when
switched to any insulation range position
An external voltage >10V is present on all
other ranges (excluding OFF/V).
The external voltage is indicated on the display,
on insulation ranges an audible bleeper will
sound if a test is attempted.

Live Circuit Warning

When more than 25V is applied to the terminals
in the insulation ranges, the instrument defaults
to a voltmeter and gives an audible warning.
On all other switch positions except OFF/V
when approx 10V is applied the default
voltmeter will be activated. Testing will be
inhibited.
Voltage Testing on High Energy Systems
Use extreme care when using or measuring
voltages above 30V, particularly in high energy
4
systems. Fused test leads are available as
optional accessories for local situations where
increased protection is required.

Auto-shut Off

To conserve battery life, Auto-shut Off
(preceded by a series of bleeps) operates after
approx. 10 minutes of instrument inactivity on
insulation, 5 minutes on all other ranges. If the
instrument is switched on whilst holding the
key, the Auto shut-off time is extended to
60 minutes. To restore operation after Auto-
shut Off, select OFF followed by the required
switch position.
Note: It is recommended that the instrument is
switched to the OFF position when not
in use.

Backlight

The backlight is activated by pressing the
key. The backlight will remain illuminated
for approx. one minute before automatically
switching
off
to
conserve
battery
life,

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