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EMG® inductors for low voltage are used in devices for the production of clean energy, such as wind or photovoltaic energy, as well as in inverters and power correction systems



Reactors > Test



The prototypes are further controlled thanks to the additional tests.We check that all our inductors respect the applicable regulations and laws in the electrical field. 


Prototype tests

-Temperature rise measurement with the resistance variation method as envisaged by CEI EN 60076-6 legislation

-Leaks in short-circuit

-Measurement of the saturation curve


Tests upon request

Harmonic distortion test to check the real working conditions of our inductors

We short-circuit the inductor and supply it with highly partialised voltage so that the nominal current can circulate. This current is notably distorted: the average THDi value recorded is 45-50%. The high voltage partialisation tends to put the magnetic circuit under strain and to highlight any noise problems that would not be detected at 50 Hz frequency.


Declaration of Conformity and homologations

As well as complying with the EN 60289 regulation, EMG® inductors are homologated cCSAus, therefore can be marketed and sold across North America. The Canadian Standards Association (CSA) checks and certifies that the products are compliant with the applicable standards in terms of safety and/or performance and it is the main mark in Canada. UL is the certifying mark for the United States of America. Thanks to an agreement with UL, CSA certifies the compliance of a product with all the applicable regulations for both the American and Canadian markets. This compliance is indicated by the cCSAus mark - featured by our inductors. 




Our products are highly customisable, therefore the descriptive parameters indicated in the catalogue are provided as a guide. According to the customer needs, the data is adapted to the desired product type.

Routine tests

-Voltage drop test

-Strength test

-Winding resistance

-Insulation resistance

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c - Canada,

CSA - certifying body

us - United States of America

Reactors > Data sheet

Data sheet

Data sheet

The EMG®  inductors are tailored-made solutions, depending on technical requirements, uses, applicable rules and standards, as well as technical feasibility.


Number of phases

Maximum nominal voltage


Insulation class


Protection level

Maximum room temperature


Compliant to regulations

1 (singlephase) / 3 (three-phase)

999V (600V products homologated for North-America)

50 / 60 Hz, on request other frequency

F / H

cable terminals / bars, on request other connections

IP00, on request other temperatures

Ta = 40°C, on request other temperatures

up to 1000 m

EN 60989 - EN 60076 - EN 61558

Reactors > Applications



General use



Power Factor Correction (PFC)

Galvanic unit

Power electonic

Wind-powered generator (armonic filters)

Engine (limitation of the start-up current)



Railway system (on the machines and signals)

Use for harmonic block on power factor correction 

with accordance at 5,6%, 7%, 14% 


Use for harmonic block with

Current distortion average degree  THDi 45%

Voltage distortion average degree  THDv 25%

Dedicated Filter

Start-up engine

Use for 10 HP up to 150 HP engines

Sized for 4 starting-up per hour, max of 2 consecutive startings

Drive or inverter

Use  upstream and/or downstream of an inverter or drive

Linearity 2In or higher

Voltage drops from 1% to 4% in the net voltage


On request  test at different working conditions from 30 to 1,900 Hz of carrier frequency. A switching ripple can be added from 1 to 10 kHz

Reactors > Custom





Maximum Insulation Voltage

Thermal sensor




on request

Insulation class

Resin impregnated

Protection level

Maximum room temperature

Maximum overtemperature

Air cooling

Simulation test

on request or technical specification

horizontal / vertical

on request or technical specification

type PTC / NC thermal contact

cable terminals

Copper / Aluminium bars

Termoplastic terminals

Customised screw terminal board

Weidmueller, Synflex, Phoenix clamps

Pre-wiring ending wires

F / H

no / yes

IP00, on request other IP

Ta = 40°C, or on request

on request or technical specification

natural air / forced air

on request or technical specification

The use of resin impregnated reactors allows to have high insulation levels of 30 kV, hence passing the water immersion test. 

This type of reactor is used in environments with a high level of humidity, condensation or dust, which is typical of railway applications

It is possible to put the transformer inside a box, with protection level on request

We can make simulation test with harmonic generator to check the temperature and noise in real working conditions.

Reactors > North America Homologation


North America Homologation

File 228479

Reference regulation CSA C22.2 N° 66/06

Reference regultion UL 5085

Three-phase inductors with homologation for North-America

Maximum voltage 600 V

Maximum working current 824 A

Wirking frequency 50/60 Hz

Insulation class F / H

Insulation 4000 V

Protection level IP 00

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c - Canada,

CSA - certifying body

us - United States of America