Visit us at PCIM Expo – Hall 4, Stand 333!

Our Sales Team is delighted to welcome you to visit and discover the high-quality Trafox solutions at our stand 4-333!

• Trafox Filters
• Trafox Reactors
• Trafox Transformers
• Trafox Power Transformers
• Trafox Superintend Monitoring Devices

Exhibition grounds are open  9-11 June 2026
Tuesday to Thursday
Daily, 9.00 a.m. to 5.00 p.m.

Looking forward to seeing you in Nuremberg!

Trafox Superintend Insulation Monitoring device IM-07DCCT for Electric vehicles and charging stations!

• For voltages up to 1250 VDC
• Monitoring of system voltage
• Short circuit proof and galvanically isolated outputs for system status
  – system OK or alarm
  – indication of insulation resistance with PWM signal
• CAN bus interface
• Disconnection functionality of HV connectors.

Download the IM-07DCCT product sheet from here (pdf)

Trafox Superintend Insulation Monitoring device IM-06DCCT for DC charging station!

• For voltages up to 1250 VDC
• Monitoring of system voltage
• Potential free alarm and pre-alarm contacts
• Modbus RTU interface
• Disconnection functionality of HV connectors.

Download the IM-06DCCT product sheet from here (pdf)

NEW Compact main transformer premagnetizing system!

Transformers typically are taken an inrush current pulse of approximately 30 times the nominal current. This reduces the voltage in the grid and stresses the structures. The inrush pulse contains a DC component, during which the transformer is magnetically unbalanced and, in addition to acoustic noise, produces a strong magnetic field around it. The start-up can be radically softened by a pre-magnetization system, which can also be connected to the secondary of the transformer if the primary is medium voltage. For more information, please take a look the file: Pre-magnetization, EN (pdf)

Important Notice: We have not changed our bank accounts!

Fraudulent emails have been sent in our company’s name, falsely claiming that our bank account details have changed.
This is not true — our bank details remain unchanged.

Some of these messages come from fake addresses such as @trafcx.fi instead of our official @trafox.fi.
Please ignore such messages and contact us directly if in doubt.

Thank you in advance for your cooperation.

NEW – Lloyd’s register type approved Insulation Monitoring System IM-04.INDM!

Trafox Superintend® IM-04.INDM and IM-04.INDM_24 Insulation Monitoring devices for Marine applications

• NEW! Now with Lloyd’s type approval certification
• Designed to be used in demanding Marine environments
• Functionality verification has included frequency converter applications
• Measures the insulation resistance and capacitance of AC/DC networks
• Detects also symmetrical insulation faults

	IM-04.INDM – Insulation Monitoring Device Download the brochure from here:  IM-04.INDM for Marine applications

NEW Remote alarm indicator panel RD-12.RCCB available now!

• With RD-12.RCCB, up to 12 RCCBs can be monitored remotely with one device
• Overall status indicated with LED lights
• Statuses of all RCCBs shown simultaneously on the LCD display
• Configurable identification texts for RCCBs
• Tripped RCCBs indicated also with alarm sound which can be muted
• Alarm memory possibility

RD-12.RCCB – Remote alarm indicator panel

Download the RD-12.RCCB product sheet from here (pdf)

NEW – UL certified Insulation Monitoring devices available now!

IM-04DCCT.UL and IM-04DCCT_24.UL – Insulation Monitoring device UL certified Designed to be used in demanding environments Measures the insulation resistance and capacitance of AC/DC networks Detects also symmetrical insulation faults Suitable for different application fields, for example      Electric vehicle DC charging stations      DC networks Nominal system voltage 0…1000 VDC N/C and N/O selectable Modbus RTU Automatic adaptation to the system leakage capacitance up to 5 uF Selectable start-up delay According to the standard IEC 61851-23 Download the IM-04DCCT product sheet from here, ENG (pdf)

IM-05DCCT.UL – Insulation Monitoring device UL certified For voltages up to 1000 VDC / 690 VAC Monitoring of system voltage Short circuit proof and galvanically isolated outputs for system status system OK or alarm indication of insulation resistance with PWM signal CAN bus interface Download the IM-05DCCT product sheet from here (pdf)

Our invoicing address will change on 1.12.2024

Dear partner,

For our part, we are trying to help forward the e-invoicing process and we hope to receive your invoices as e-invoices whenever possible. Please, note the new invoicing address starting from 1.12.2024.

Muuntosähkö Oy

Paper invoices should be sent to this address:

Muuntosähkö Oy
PL 2561
02066 DOCUSCAN

Kind Regards,
Muuntosähkö Oy

23.10.2024: Invoicing information ( PDF)

Offline Insulation Monitoring device for industrial use

IM-04.INDD up to 3 x 173/300 VAC	IM-01.INDD up to 3 x 400/690 VAC
IM-04.INDD.10 + HVC-10 up to 3 x 400/690 VAC

Principle of operation

The system is equipped with a disconnection contactor which is controlled by the IMD. When the system is started, the disconnection contactor is open, disconnecting the load network from the supply network. At the same time, the NC auxiliary contacts of the disconnection contactor connects the supply network to the measurement input connectors of the IMD. When the load network is supposed to be connected to the supply network, a command is sent to the IMD through the Modbus RTU interface. After receiving the connection command, the IMD disables insulation monitoring and powers the disconnection contactor, which connects the load network to the supply network and disconnects the measurement inputs from the load network. Disconnecting the load network from the supply network works the same way in the opposite manner.

The disconnection contactor must have 4 NO contacts and 2 NC auxiliary contacts. A suitable type is, for example, ABB AF116B-40-22-13 for up to 55 kW loads or some higher power version of the similar type. The voltage rating of the auxiliary contacts must be suitable for the network voltage.

Download the Product Sheet from here: Trafox Superintend Offline IMD, EN (pdf)

Muuntosähkö Oy – Trafox is expanding its operations in the Joensuu area.

Trafox is a brand of Muuntosähkö Oy, under which we develop and manufacture high-quality transformers, chokes, filters and Trafox Superintend® monitoring devices with over 70 years of experience. Our production facilities are located in Helsinki (Finland), Joensuu (Finland), Viljandi (Estonia) and Suzhou (China).

In order to be able to meet the needs of both our domestic and export customers better in the future, we are increasing Trafox Group’s total production area to 23,000 m2 by opening a new 4,000 m2 factory in the Joensuu area, where we will move the production of Trafox Transformers and Trafox chokes of larger current and size classes.

In order to ensure the quality and safe development of our products in the future as well, we are starting preparations for the new factory by investing in new machines and testing equipment required by international electrical standards. After these important initial preparations, we start production in three separate phases:

1. In autumn 2024, we will first start with the Trafox air- and water-cooled Power Electronics chokes – max 3kA in the new premises.
2. Next up are Trafox air- and water-cooled Power Transformers, size class 500kVA – 3MVA.
3. Thirdly, our selection expands to Trafox Medium Voltage Reactors – max 11kV.

The new facility will be fully started, and all of these phases will be conducted in about two years.

With this remarkably increased capacity, we will also reorganize our current Joensuu production facility to ensure more space for our already strongly growing Monitoring device production. Our innovative Trafox Superintend fault current and insulation level monitoring devices are used by our customers in tens of thousands of different industrial, hospital, electric vehicle charging equipment, renewable energy, shipping, construction, and heavy industry applications around the world.

Best Regards,

Jyri Taskinen
Managing Director

TRAFOX_RELEASE_EN_060224 (pdf)

TRAFOX_TIEDOTE_FI_060224 (pdf)

NEW! Insulation Monitoring device IM-04PV for PV applications – now with voltage measurement!

Trafox Superintend® IM-04PV

NEW! NOW WITH VOLTAGE MEASUREMENT!

• Immune against disturbances (clouds and frequency disturbances), FFT
• For voltages up to 1500 VDC with high voltage couplers
• Quality and reliability from Finland
• Suitable also for other AC and DC high voltage systems
• NEW! Measurement of system voltage

To find out more information about these new products, please visit IMD Insulation Monitoring devices websites or contact sales@trafox.fi.

You can also download the brochure from here:  IM-04PV for Photovoltaic Applications, ENG (pdf)

NEW! Insulation Monitoring device IM-04DCCT for DC charging station – now with voltage measurement!

Trafox Superintend® IM-04DCCT

NEW! NOW WITH VOLTAGE MEASUREMENT!

• Designed to be used in demanding environments
• Measures the insulation resistance and capacitance of AC/DC networks
• Detects also symmetrical insulation faults
• Suitable for different application fields, for example
•      Electric vehicle DC charging stations
•      DC networks
• Nominal system voltage 0…1000 VDC
• N/C and N/O selectable
• Modbus RTU
• Automatic adaptation to the system leakage capacitance up to 5 uF
• Selectable start-up delay
• According to the standard IEC 61851-23
• NEW! Measurement of system voltage

IM-04DCCT – Insulation Monitoring device HVC-10 – High voltage couplerDownload the brochure from here: IM-04DCCT for DC charging station, ENG (pdf)

Meet us in Chengdu, China, at China Hospital Construction Conference (CHCC)

Our Sales Team would be more than happy to present you Trafox Medical Transformers and Trafox Superintend Monitoring Devices at our stand 14-15Z10!

Exhibition grounds are open 17-19 June 2023:

Saturday to Monday
Daily, 10am to 7pm

Venue:

Western China International Expo City
88, East Section of Fuzhou Road, Tianfu New District
Chengdu
China

NEW Trafox Medical Transformers

do have inbuilt core construction what will limit strongly transformers’ inrush current!

 Medical Transformers, standard – Product Sheet, ENG (pdf)

Medical Transformers, eco – Product Sheet, ENG (pdf)

Trafox Superintend IMD Insulation Monitoring devices for Medical use

• Modbus/TCP interface for remote monitoring and controlling!
• Visual user interface and easy installation
• Automatic recognition of the network impedance and capacitance (subharmonic distortion)
• Load and temperature monitoring of the isolation transformer and a potential free alarm contact
• Optional remote modules for insulation and transformer monitoring
• Possibility of connecting PE conductor monitoring units
• Removable microSD memory card for analyzing the usage history and fault events

To find out more information about these products, please visit Trafox Medical Transformers and IMD Insulation Monitoring devices websites or contact sales@trafox.fi.

Trafox Medical Isolation transformers certified by SGS Fimko Ltd

FI mark is only granted to products that have passed thorough tests and inspections and complies safety requirements of the low-voltage directive. FI mark is always a reliable verification that the product is suitable for Finnish conditions with e.g. cold winters affecting endurance of electrical devices.

NEW Trafox Power Transformers available now!

Power Transformers for Energy, Marine and Industry applications

• This new series of transformers has been designed to be cost-effective -> 15-20% lower losses!
• The effective manufacturing methods cause less strain on the environment and all the raw materials can be recycled.
• This new series of transformers fulfills the most common standards and international norms.
• Transformers can be manufactured also according to norms such as DNV or LRS or customer’s specified specifications.

Open construction – vertical model: P6,3-20kVA
Trafox Power Transformer, 1 phase, type P6,3-20kVA	Available also: horizontal models IP23-54, capsulated models Low loss Eco models Transformers can be design and done also with specific core construction. So that inrush current is max 3,5 x In.

Download the brochure from here: Power Transformers, 1 phase, EN (pdf)

NEW – Lloyd’s register type approved Trafox Superintend® Insulation Monitoring System!

Trafox Superintend® IM-01.INDM Insulation Monitoring device for Marine applications

• NEW! Now with Lloyd’s type approval certification
• Modbus/TCP interface for remote monitoring and controlling
• Visual user interface and easy installation
• Automatic recognition of the network impedance and capacitance (subharmonic distortion)
• Load and temperature monitoring of the isolation transformer and a potential free alarm contact
• Optional remote modules for insulation and transformer monitoring
• Possibility of connecting PE conductor monitoring units
• Removable microSD memory card for analyzing the usage history and fault events
• Suitable for frequency converter applications

	IM-01.INDM – Insulation Monitoring Device Download the brochure from here:  IM-01.INDM for Marine applications

NEW Trafox Medical Isolation Transformers for Health care applications!

Trafox Superintend® IMD Insulation Monitoring device for Medical use

• Modbus/TCP interface for remote monitoring and controlling!
• Visual user interface and easy installation
• Automatic recognition of the network impedance and capacitance (subharmonic distortion)
• Load and temperature monitoring of the isolation transformer and a potential free alarm contact
• Optional remote modules for insulation and transformer monitoring
• Possibility of connecting PE conductor monitoring units
• Removable microSD memory card for analyzing the usage history and fault events

To find out more information about these new products, please visit IMD Insulation Monitoring devices websites or contact sales@trafox.fi.

You can also download the brochure from here:  IM-01.MED for Medical use, ENG (pdf)

Trafox Chenahoya Monitoring Devices and new low inrush current Medical Transformer series enters successfully to the China’s healthcare market

We are pleased to present these first new hospital projects in mainland China. The Hospitals chose Trafox Chenahoya Medical Insulation Monitoring units and new Medical Isolation Transformers after hard and precise technical evaluation. We are proud to export these great results of Finnish engineering work to these hospitals from our Finnish factory.

1. Hospital of Hebei Medical University

2. Da Vinci Operating Room, Sino-Japanese Friendship Hospital of Jilin University

Trafox Insulation Monitoring product family has devices for many business segments. They are high quality products with exceptional technical values. Download the Product sheet from here: IM-01.MED for Medical use, ENG (pdf)
The new Medical Insulation Transformer series is designed to have low standby losses and very small inrush current peaks. Download the Product Sheet from here: Medical Transformers, ENG (pdf)

We are extremely happy and thankful about Chenahoya Co., Ltd organization and Mr. Chen’s high technical knowledge about medical systems and installations. We truly wish and believe that Chenahoya’s as well as Mr. Chen’s long experience, active role and business abilities guarantee us many more shared projects in the future in China!

CEO Jyri Taskinen

TRAFOX CHENAHOYA MONITORING DEVICES
Mainland China Liaison Office, Chenahoya Co., Ltd
Building 1, Chenghuayuan, Xueqing Road, Haidian District
Beijing, China
Contact: Mr. Chen
Tel. +86 010 80225305, 18618274405