Caution! Risk of electrical shock

ART SERIES
Rogowski coil for the electronic
measurement of AC current

Installation guide
In order to guarantee safe operation of thetransducer and to able to make proper use of allfeatures and functions, please read these
instructions carefully!

Safety and warning notes
Safe operation can only be guaranteed if thetransducer is used for the purpose it has been
designed for and within the limits of the technicalspecifications.
Ensure you get up-to-date technical information thatcan be found in the latest associated datasheet
under www.lem.com.

Caution! Risk of dangerIgnoring the warnings can lead to serious injury
and/or cause damage! The electric measuringtransducer may only be installed and put into
operation by qualified personnel that have received
an appropriate training. The corresponding national
regulations shall be observed during installations
and operation of the transducer and any electricalconductor. The transducer shall be used inelectric/electronic equipment with respect toapplicable standards and safety requirements andin accordance with all the related systems andcomponents manufacturers’ operation instructions.

Do not use outdoors!
98.60.11.009.0 Rev 0Caution! Avoid fitting or removing
uninsulated conductors that conduct
dangerous voltages - they can cause
electrical shocks, electrical burns or flashover.
When operating the transducer, certain parts of thesystem may carry hazardous live voltage (e.g.
primary conductor). The user shall ensure to takeall measures necessary to protect against electricalshock. The transducer is a build-in device
containing conducting parts that shall not be
accessible after installation. A protective enclosure
or additional insulation barrier may be necessary.
Installation and maintenance shall be done with themain power supply disconnected except if there areno hazardous lives parts in or in close proximity to
the system and if the applicable national
regulations are fully observed.
Safe and trouble-free operation of this transducer
can only be guaranteed if transport, storage andinstallation are carried out correctly and operationand maintenance are carried out with care.

Installation
When using a bare bus bar, please makesure that all sharp edges have necessary
mechanical protections in order not to damage
insulation of the ART coil.
In order not to degrade the accuracy, do not stressthe coil applying any kind of mechanical constraint(twisting, pressing, punching, strong bending…)

Arrow indicating current direction must
be inside the loop (3) when closed.
• Slide the coil cable into the enclosure. (Fig. 2)• Turn the bayonet catch to the right until the end of
the measuring coil audibly latches (Fig.3)• The bayonet fastening (1) can be sealed with thehousing (3) and then becomes tamper-proof.

• Connect the secondary cable of the ART
Rogowski coil to the input terminals of yourelectronics.

Insulation characteristics
Click

Rated insulation RMS voltage,
1000 Vreinforced insulation acc. to IEC61010-1
Cat III PD2
RMS voltage for AC insulation test
7.4 kV
50Hz / 1 min
Impulse withstand voltage 1.2/50 μs
12.6 kV
Case material according to UL94

V0

Protection degree

IP57

Compliant with IEC 61869 and UL 61010-1

Specification
Figure 2• Due to low positioning error, the ART does notneed to be physically fastened around the primaryconductor. Should the device be secured, makesure no mechanical stress is applied to the coilitself.
• To do so, guide a cable tie through the intended
fixture on the enclosure of the ART.

The Rogowski coil can measure any primary
current as there is no saturation effect.
Secondary voltage @50Hz

22.5mV/1kA

Rated transformation ratio @50Hz

44.44 kA/V

Phase displacement

none

Ratio error (centered)Class 0.5 accuracy acc. to IEC 61869-2

0.5%

Ratio error (all positions)

0.75%

Ambient operating temperature

Temperature of the primary conductor• To open the ART Rogowski coil, turn the bayonet
catch (1) to the left (anti-clockwise) and draw thecoil cable out of the enclosure.
• Make sure that the arrow on the ART (3) ispointing towards the load• Guide the Rogowski coil around the power cable(2) (Fig. 1).

Relative humidity
Altitude above sea level

Figure 3

390%
2000m

LEM is the market leader in providing innovativeand high quality solution for measuring electricalparameters. Its core products, current andvoltage transducers, are used in a board range
of applications in industrial, traction, energy,automation and automotive markets.
For more information: www.lem.com

Figure 1<100°CAt the heart of power electronics

21-40…80°C

LEM International SA
8 chemin des Aulx
CH-1228 Plan-les-Ouates
Switzerland