Instructions
GMC-I Messtechnik GmbH 15
6 Maintenance
6.1 Housing Maintenance
No special maintenance is required. Keep
outside surfaces clean and dry. Use a
slightly dampened cloth for cleaning. Avoid
the use of solvents, cleansers and abrasives.
6.2 Technical Safety Inspections,
Testing per DGUV Regulation 3
Subject your test adapter to technical safety
inspections at regular intervals.
The test adapter is designed in accordance
with IEC 61010 and VDE 0413-16 as a pro-
tection category I and II test instrument.
Testing of protective conductor and insula-
tion resistance is described in the following
subsections.
6.2.1 Testing Protective Conductor Resistance
Testing the 3-Phase Connection
Protected conduct or resistance values of
R
PE <2 are permissible. This is due to the
design of the test adapter.
Connecting/Contacting the Test Adapter,
3-Phase (400 V)
Protective conductor resistance is tested
between the PE safety contact at the mains
connection sockets and the parallel con-
nected 4 mm safety socket at the PE mea-
surement input.
6.2.2 Testing Insulation Resistance
Testing is conducted respectively between
short-circuited contacts L
123
-N and PE for
the mains connection safety sockets and
between L-N and PE for the measurement
inputs.
The usual limit values apply.
6.3 Fuse Replacement
All eight fuses for neutral (F7/F8) and phase
conductors (F1 to F6) are accessible from
the outside.
The fuses may only be replaced when the
device is voltage-free, i.e. the device must
be disconnected from mains supply power
and may not be connected to a measuring
circuit. The respective fuse type must com-
ply with the specifications in the technical
data or the labeling on the device.
➭ Unscrew the appropriate fuse holder
with the help of a suitable screwdriver.
➭ Remove the blown fuse from the holder.
➭ Insert the new fuse into the holder.
➭ Reinsert the fuse holder and screw it
tight.
Fuse Holders
PROFITESTREMOTE Maintenance