6
MOM2
ZP-BD03E
BD0333JE
1 SAFETy
1
S
afety
1.1 Safety instructions
For your own safety and to get the maximum benefit
from your instrument, please ensure that you read
and understand the following safety instructions and
warnings before using the instrument.
Read and comply with the following
instructions.
Always comply with local safety
regulations.
Important
Warning
Connecting – before test
1.
Before measuring resistance in circuit breakers
or disconnecting switches (isolators), always
check to see that the object being tested is
closed and grounded at least on one side.
2.
Do not connect the instrument to inductive
loads if not necessary. This can cause high volt-
ages when removing the current clamps and
possibly damage MOM2.
3.
Always connect the protective ground on
MOM2 before making any other connections.
4.
Always connect the test cables to MOM2 be-
fore connecting them to the test object.
5.
Never connect MOM2 to live circuits.
During test
1.
The rising current waveforms produced by the
instrument may induce enough current into
the secondary of a current transformer (CT)
circuit to actuate a protective relay.
If there is a CT in the current circuit, the pro-
tective relay equipment that is connected to it
must be blocked to prevent actuation.
After completing the measurements, you can
follow the normal procedures that are used to
demagnetize current transformer cores after
DC has passed through their current trans-
former.
2.
Never open a circuit breaker while MOM2 is
connected to it.
3.
Connection points for current cables can be-
come hot during current generation.
4.
High current on output terminals.
Disconnecting – after test
1.
First, disconnect all test cables from the test
object and then disconnect them from MOM2.
Last, disconnect the protective ground from
MOM2.
Important
1.
The instrument is intended for use in industrial
environment. It generates, uses and can radi-
ate radio frequency energy and, if not installed
and used in accordance with these instructions
it may cause interference to other devices
in the vicinity. If this equipment does cause
interference with other devices, which can be
determined by turning the equipment off and
on, the user is encouraged to try to correct the
interference by one or more of the following
measures:
▪
Reorient or relocate the receiving device.
▪
Increase the separation between the equipments.
▪
Consult the manufacturer or field service
technician for help.
2.
Never leave the MOM2 unattended while it is
turned on.
3.
Do not use any accessories that are not in-
tended for use together with the instrument.
4.
It is not possible to use the MOM2 for testing
during battery charging.
5.
Use a damp cloth for cleaning. Do not use
liquid cleaners or aerosol cleaners.
6.
Do not attempt to service the instrument your-
self. If you attempt to service the instrument
yourself the warranty is no longer valid. Refer
all servicing to Megger authorized personnel.
7.
If you need to return the instrument, please
use either the original crate or one of equiva-
lent strength.
www.
.com
1.800.561.8187
