20
02/ 2020
BENNING CM 1–4
Operating Manual
BENNING CM 1-4
TRUE RMS multimeter with open current clamp for
- AC current measurements
- AC voltage measurements
- DC voltage measurements
- single-pole external conductor test (phase indication)
- phase sequence test
- polarity test
- resistance measurements
- continuity tests
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 1-4
9. Maintenance
10. Technical data of measuring accessories
11. Environmental note
1. User instructions
This operating manual is intended for
- skilled electricians and
- electrotechnically trained personnel.
The BENNING CM 1-4 is intended for measurements under dry ambient condi
-
tions. It must not be used in electrical circuits with a voltage higher than 1000 V
AC/DC (see section 6 „Ambient conditions“ for details).
The following symbols are used in this operating manual and on the BENNING
CM 1-4:
Application around and removal from HAZARDOUS LIVE conductors
is permitted.
Warning of electrical danger!
Indicates instructions which must be followed to avoid danger to per
-
sons.
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
Measuring category III is applicable to testing and measuring circuits
connected to the distribution circuit of the low-voltage mains installation
of a building.
CAT IV
Measuring category IV is applicable to testing and measuring circuits
connected to the feed-in point of the low-voltage mains installation of
a building.
This symbol on the BENNING CM 1-4 indicates that the BENNING
CM 1-4 is equipped with protective insulation (protection class II).
Please observe the operating manual!
This symbol appears on the display to indicate a discharged battery.
This symbol designates the „continuity test“ field. The buzzer is intended
for acoustic result output.
(DC) Direct voltage
(AC) Alternating voltage or current
Ground (voltage against ground)