09/ 2019
BENNING CM E1
9
Operating Manual
BENNING CM E1
Earth measuring clamp for
- earth loop resistance measurement
- AC current/ leakage current measurement
Table of contents
1. User instructions
2. Safety instructions
3. Scope of delivery
4. Device description
5. General information
6. Ambient conditions
7. Electrical specifications
8. Measuring with the BENNING CM E1
9. Maintenance
10. Environmental note
1. User instructions
This operating manual is intended for
- skilled electricians and
- electrotechnically trained personnel.
The BENNING CM E1 is intended for measurements under dry ambient conditions. It must not be used
in electrical circuits with a nominal voltage higher then CAT III 300 V (see section 6 „Ambient conditions“
for details).
The following symbols are used in this operating manual and on the BENNING CM E1:
Application around and removal from HAZARDOUS LIVE conductors is permitted.
Warning of electrical danger!
Indicates instructions which must be followed to avoid danger to persons.
Attention! Must comply with documentation!
This symbol indicates that the information provided in the operating manual must be complied
with in order to avoid risks.
CAT III
CAT III Measuring category III is applicable to testing and measuring circuits connected to the
distribution circuit of the low-voltage mains installation of a building.
This symbol on the BENNING CM E1 indicates that the BENNING CM E1 is equipped with pro-
tective insulation (protection class II).
Please observe the operating manual!
This symbol appears on the display to indicate a discharged battery.
(AC) Alternating voltage or current
Ground (voltage against ground)
