BENNING CM E1

TRUE RMS earth measuring clamp for earth loop resistance and leakage current measurement

BENNING CM E1 - TRUE RMS earth measuring clamp for earth loop resistance and leakage current measurement

Earth measuring clamp BENNING CM E1

Measuring functions:

  • earth loop resistance measurement RE in multiply earthed earthing systems
  • measurement of leakage and load currents from 0.3 mA to 35 A using the TRUE RMS measuring method

Features:

  • precise due to TRUE RMS measuring method (AC, AC+DC)
  • optical and acoustic alarm function in case of excessive earthing resistances
  • large measuring clamp diameter of 38 mm
  • memory of measured values/data logger for 116 measurements
  • automatic calibration during start-up
  • measuring category CAT III 300 V
  • supplied in a hard-top case and with reference resistance loop

Functional principle:

  • The measuring clamp has an excitation winding and a sensor winding.
  • The excitation winding induces a current flow in the clamped earthing conductor via a constant AC voltage U (f = 3.333 kHz).
  • The sensor winding measures the induced current flow.
  • The BENNING CM E1 measures (calculates) the resistance of the entire earth loop Rs = U / I.

Advantage of earth resistance measurement without using rods:

  • no need to disconnect the earthing conductor (often difficult because of corrosion)
  • no need to install probes/auxiliary earth electrodes
  • quick and easy measurement
  • safe both for the testing personnel and the electrical installation (earthing is maintained during measurement)
  • no failures of the electrical installation due to disconnection of the earth connection

Typical fields of application:

  • electrical installations with parallel earth connections
    • overhead line networks with pole-type earth electrodes
    • lightning protection systems of buildings
    • street lighting, telecom applications, wind energy
Earth Measuring Clamp BENNING CM E1
Earth measuring clamp BENNING CM E1 when measuring the earth loop resistance of an equipment earthing connection system
Earth Measuring Clamp BENNING CM E1
Earth measuring clamp BENNING CM E1 when measuring the system earthing connection of an industrial power distribution system
Earth Measuring Clamp BENNING CM E1
Earth measuring clamp BENNING CM E1 - front view
Earth Measuring Clamp BENNING CM E1
Scope of delivery of the BENNING CM E1 earth measuring clamp
  BENNING CM E1
indicating range 9,999
basic accuracy 1 %
AC voltage -
DC voltage -
AC current 0.3 mA - 35 A
DC current -
resistance RE-loop 0.025 Ω – 1500 Ω
continuity / diode - / -
frequency -
capacity -
memory / data log HOLD, REC (116 measured values)
measuring method TRUE RMS
max. clamp opening 38 mm
measuring category CAT III 300 V
item no. 044684

Technical changes, model or color modifications, mistakes and delivery facilities without notice! No responsibility for literal mistakes.

Further information

Brochures
Case Studies
Instruction manuals
Price lists

Technical Support
(After Sales Service)

Phone+49 2871 93 555
Emailhelpdesk@benning.de

Returns Management, Calibration, Repairs
Phone+49 2871 93 554
Emailreturns@benning.de

Your contact person in Germany

The delivery takes place only by wholesaler.
Our agencies (* with warehouse) for the customer topologies Electrical Wholesalers (EGH) and Hardware Wholesalers (PVH):

Baden-Württemberg (EGH/PVH)
Herzog Industrievertretung GmbH
adress

Fritz-Karl-Henkel-Str. 12-16
D-67454 Haßloch

Bavaria (EGH/PVH)
ELKA Krischke Elektrotechnik
adress

Wettersteinstr. 12
D-82024 Taufkirchen

Berlin, Brandenburg (EGH/PVH)
SKE Steffen Klewe
Elektrotechnische Handelsvertretung
adress

Teltower Damm 214
D-14167 Berlin

Bremen, Niedersachsen (West) (EGH)
Bremen, Niedersachsen (PVH)

BENNING GmbH & Co. KG
adress

Münsterstr. 135 - 137
D-46397 Bocholt

Hamburg (EGH/PVH)
Lower Saxony (Center/East) (EGH)

TBB-Technischer Bedarf Böttcher GmbH
adress

Gänseweide 7
D-21379 Lüdersburg

Hesse (EGH / PVH)
Ronny Münch
adress

Jägerstr. 3
D-35099 Burgwald

Mecklenburg-West Pomerania (EGH/PVH)
SKE Steffen Klewe
Elektrotechnische Handelsvertretung
adress

Teltower Damm 214
D-14167 Berlin

North Rhine-Westphalia
BENNING GmbH & Co. KG
adress

Münsterstr. 135 - 137
D-46397 Bocholt

Rhineland- Palatinate, Saarland (EGH/PVH)
Herzog Industrievertretung GmbH
adress

Fritz-Karl-Henkel-Str. 12-16
D-67454 Haßloch

Saxony (EGH/PVH)
Udo Wendelmuth
adress

Erfurter Str. 61
D-99195 Schwansee

Saxony-Anhalt (North/Center) (EGH/PVH)
SKE Steffen Klewe
Elektrotechnische Handelsvertretung
adress

Teltower Damm 214
D-14167 Berlin

Saxony-Anhalt (South) (EGH/PVH)
Thuringia (EGH/PVH)

Udo Wendelmuth
adress

Erfurter Str. 61
D-99195 Schwansee

Agencies abroad

(* EGH = for Electrical Wholesaler, PVH = for Hardware Wholesalers)

Austria
BENNING GmbH Elektrotechnik und Elektronik
tel

+43/ (0) 2242-32416-0

adress

Eduard-Klinger-Str. 9
3423 St. Andrä-Wördern

Belgium (EGH*)
Drugmand & Meert / EMAS / Gecom
tel

+32 (0) 22 51 60 60

fax

+32 (0) 22 52 22 66

adress

De bavaylei 110
1800 VILVOORDE

Belgium (PVH*)
P.J. Timmerman & Fils N.V.
tel

+32 (0) 23 77 71 66

fax

+32 (0) 23 77 94 58

adress

Koning-Albertstraat 3 - 7
1600 SINT-PIETERS LEEUW

Bulgaria
Contragent 35
tel

+3 59 42 60 01 45

fax

+3 59 42 60 01 29

adress

Industrialna Str.
6000 STARA ZAGORA

China
BENNING Power Electronics (Beijing) Co., Ltd.
tel

+86 (0) 10 61 56 85 88

fax

+86 (0) 10 61 50 62 00

adress

Tongzhou Industrial Development Zone
No.1-B BeiEr Street
101113 BEIJING

Czech Republic (EGH*)
EST Elektro - System -Technik s.r.o.
tel

+42 02 66 09 07 11

fax

+42 02 66 09 07 17

adress

Pod pekarnami 338/12
190 00 PRAHA 9 VYSOCANY

France
AGéCOM Diffusion
tel

+33 (0) 3 88 19 70 10

fax

+33 (0) 3 88 19 02 73

adress

6, rue de Londres
CS 60090 Mommenheim
67173 BRUMATH CEDEX

France
BENNING Conversion d'énergie
tel

+33 (0) 2 32 25 23 94

fax

+33 (0) 2 32 25 08 64

adress

43, avenue Winston Churchill
27404 LOUVIERS

Greece
V.KAFKAS S.A.
tel

+30 / 21 63 00 30 00

fax

+30 / 21 63 00 31 00

adress

1 klm Markopoulou Aven.
19002 Paiania Attiki

web

www.kafkas.gr

Hungary
BENNING Kft.
tel

+36 (0) 33/ 50 76 00

fax

+36 (0) 33/ 50 76 01

adress

Ringló út 99
1221 BUDAPEST

Netherlands (EGH*)
Amwittools BV
tel

+31 (0) 1 72 53 84 33

fax

+31 (0) 1 72 53 06 55

adress

Harsweg 22
2461 EZ Ter Aar

Netherlands (PVH*)
ITECE Holland B.V.
tel

+31 (0) 1 72 53 84 33

fax

+31 (0) 1 72 53 06 55

adress

Harsweg 22
2461 EZ Ter Aar

New Zealand
EUROTEC LIMITED
tel

+64/ 9/ 5 79 19 90

fax

+64/ 9/ 5 25 33 34

adress

750, Great South Road
1061 PENROSE, AUCKLAND

Poland
"LL" Spolka z ograniczona
tel

+48/ 7 13 98 08 00

fax

+48/ 7 13 98 08 02

adress

odpowiedzialnoscia sp. k.
dawniej Lange Lukaszuk Sp. j
ul. Wrocławska 43, Byków
55-095 MIRKOW

Romania
BENNING Power Electronics ROM SCS
tel

+40 (0) 2 55 20 60 96

fax

+40 (0) 2 55 51 66 08

adress

Str. Lunca Grofului, Nr. 4
327055 BUCHIN

Russia
OOO BENNING Power Electronics Ltd.
tel

+7 4 95/ 9 67 68 50

fax

+7 4 95/ 9 67 68 51

adress

ul. Planetnaya, 11
125167 MOSCOW

Serbia
Anderba d.o.o.
tel

+381/ 11 76 78 09

fax

+381/ 3 29 21 77

adress

Ljube Stojanovica 36/III
11000 BEOGRAD

Slovakia
BENNING Slovensko s.r.o.
tel

+421 (0) 2 44 45 99 42

fax

+421 (0) 2 44 45 50 05

adress

Kukuricná 17
83103 BRATISLAVA

Spain
BENNING c.d.e. SA
tel

+34 91 6 04 81 10

fax

+34 91 6 04 84 02

adress

C/Pico de Santa Catalina 2
Pol. Ind. Los Linares
28970 HUMANES

South Africa
Hellermann Tyton (Pty) Ltd
tel

+27 11 8 79 66 20

fax

+27 11 8 79 66 03

adress

Private BAG X 158
2128 RIVORIA

Sweden (EGH*)
OEM Automatic AB
tel

+46/ 75/ 2 42 41 00

fax

+46/ 75/ 2 42 41 19

adress

Fredriksbergsgatan 2
573 92 TRANAS

Switzerland
BENNING Power Electronics GmbH
tel

+41 (0) 44 / 8 05 75 75

fax

+41 (0) 44 / 8 05 75 80

adress

Industriestrasse 6
8305 Dietlikon

Switzerland
RECOM ELECTRONICS AG
tel

+41 (0) 44 / 7 87 10 00

fax

+41 (0) 44 / 7 87 10 05

adress

Samstagernstrasse 45
8832 Wollerau

Your contact persons

Where are you from? Select your country of origin from the list below, to quickly find your personal contact person.

BENNING Subsidiaries - Find your contact person by clicking on the corresponding flag.

USA BENNING Power Electronics, Inc.
Technical Support Hotline
tel

+1 800 910 3601

USA BENNING Power Electronics, Inc.
Services Support
tel

+1 214 553 1444

address1220 Presidential Drive Richardson, Texas 75081 U.S.A.
USA BENNING Power Electronics, Inc.
BENNING US Sales
tel

+1 214 553 1444

address1220 Presidential Drive Richardson, Texas 75081 U.S.A.
USA BENNING Power Electronics, Inc.
Customer Helpdesk
tel

+1 214 553 1444

address1220 Presidential Drive Richardson, Texas 75081 U.S.A.