PAD-MOUNTED POTENCY POLE-MOUNTED DRY SUBSTATION SUBMERSIBLE .

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Transforming electricity

in business.

Our Facilities

In 1963, C.J. Refugio Guzmán Jiménez, received a Mechanical-Electrician degree at the Technological Institute of

Higher Studies of Monterrey, at the same time decided to open a place in the electrical industry and founded IMEM

as a small family business. His vision was to fill what he considered a vacuum in the local electricity industry, by

manufacturing ferroresonant saturated-core voltage regulators, which were once indispensable for televisions,

refrigerators, and voltage devices until the year of 1968.

Man with great vision decided to venture into the manufacture of transformers, starting with pole-type transformers,

single-phase and three-phase in medium voltage.

The first transformers of the company became the hallmark of IMEM. Always thinking about the future, Mr. Guzmán

made it his personal mission to identify trends in the electrical industry, and to stay at the forefront of these trends

by introducing innovative products to the market that immediately satisfy the demands of customers.

On October 2, 1970, the General Directorate of the Ministry of Industry and Commerce granted the SIC-DGE-5250

authorization for the manufacture, sale and use in the Mexican Republic of IMEM brand distribution transformers of

national manufacture up to 3000 KVA, 1 and 3 phases, 50/60 HZ. 23000 V.AT, 440 / 253.9 V.BT, oil cooled, indoor

and outdoor service.

Under the direction of Ing. Guzmán, during the following 5 years, IMEM expanded its manufacturing to distribution

transformers for agricultural use in pumping equipment and in the first industries of the Laja-Bajío region.

In 1975 the railway was used to send the transformers to the whole Mexican Republic. In the same year,

transformers were manufactured in what is now Miguel Hidalgo street in the city of Celaya, Guanajuato.

During the next 25 years IMEM continued consolidating as one of the main brands in the country.

In November 1999, the management of LP-Gas and Electrical Installations of the energy secretary authorized IMEM

to manufacture transformers for compliance with NOM-002-SEDE-1999 "Safety and energy efficiency requirements

for distribution transformers".

History

IMEM transformer manufactured more than 50 years ago

At the beginning of the year 2000 IMEM began to test its prototypes in CFE LAPEM and since then it has been a

member of ANCE. It began exporting to the Middle East, the United States, Panama, Guatemala, Honduras, the

Dominican Republic, El Salvador and Chile.

In the year of 2010 IMEM changes to its new facilities on the Panamerican Highway Km.47 in the municipality of

Apaseo el Grande in an area of 5 hectares

Over the years we have incorporated new product lines with the aim of providing our customers with an integral

solution to their needs. We have an excellent human group which is trained on a permanent basis in order to be

updated in the changes and technological innovations that are presented in our field.

Our main objective is to achieve a permanent improvement in our activities in order to provide a service that ensures

a delivery in time and form with its corresponding advice, technical support and its subsequent after-sales service.

The fulfillment of the aforementioned guidelines requires us to strictly comply with our quality system manual and

procedures in order to achieve the ultimate goal of full satisfaction of our customers by complying with current

regulations and the standards set by ISO 9001: 2015.

In 2017, the electrical testing laboratory of CFE-LAPEM issues satisfactory certificates in accordance with the standards:

• ESP-CFE-K0000-08-2015.

• NMX-J-169-ANCE-2015.

• NMX-J-285-ANCE-2016.

• NOM-002-SEDE / ENER-2014.

At the end of 2017 IMEM acquires an automated electrical testing laboratory from Phenix Technologies.

From this year, IMEM begins to receive electronic payments online within its page to make the shopping experience of its customers more convenient and simple.

LABORATORY PHENIX

CERTIFICATES AND AWARDS

At IMEM our quality supports us. For all our transformers we offer a guarantee against manufacturing defects and materials, with a validity period of 6 years from the date of invoicing.

Mission

Satisfying our internal and external customers, through the manufacture and commercialization of electrical transformers, complying with all quality standards, both for the private or government industry, contributing to the growth of all those who are part of the company, in addition to favor the entire productive chain that depends on us.

Vision

To be the leading company in the manufacture of electrical transformers, to be recognized in the national and international market as an innovative company, committed to our customers, suppliers, community and environment. Improve the quality of our products through research into new technologies, materials and global trends and therefore achieve sustained growth.

Values

Honesty

Commitment

Attitude

Loyalty

Responsibility

Respect

Overcoming

Optimism

Absolute Guarantee

Mission / Vision / Values

CONSTRUCTION

IMEM Pole-Mounted distribution transformers are ready to be mounted on a pole or any other similar structure, in order to be used in aerial feeding systems.

The Pole-Mounted distribution transformer is the most used in the rural

and urban zones.

They are commonly used in residential areas, industries, shopping

centers, wells, etc.

Pole-Mounted distribution transformers are self-cooled in an insulating fluid and are classified as an ONAN type (Oils-Natural-Air-Natural). They are produced to operate at an altitude of 1000 or 2300 meters above sea level, with an overheating of 65ºC, along with a room temperature that does not exceed 40ºC and the average temperature within a 24 hour-period that does not exceed 30ºC, or coast transformers with a room temperature that does not exceed 50ºC and an average temperature within a 24 hour-period that does not exceed 40ºC, according to the client's specifications.

These are built with coated cores of grain-oriented silicon steel which have a high magnetic permeability, manufactured in UNICORE machines to achieve the least of the losses in vacuum.

The AT/BT coils are manufactured with electrolytic copper wires and/or aluminum of low electrical resistance in different types of insulation according to their needs.

The tanks are built with stainless or carbon steel sheets, depending on the requirement, and they go through a white metal blast cleaning process, an application of an anti-rust epoxy primer and a high resistance polyurethane varnish. The insulating fluid is free of polychlorinated biphenyl of the naphthenic type (NMX-J-123-ANCE) or biodegradable vegetable oil of high flash point, according to the customer's specifications.

DESCRIPTION

Pole-Mounted Transformer

ELECTROSTATIC PAINT CABIN

IMEM Pole-Mounted distribution transformers are manufactured according to the following:

Single-phased pole type 1 nozzle from 5 KVA to 167 KVA

Single-phased pole type 2 nozzles from 5 KVA to 167 KVA Three-phase pole type from 15 KVA to 150 KVA

Hanging supports

Handles to hold the pole

Drain plug and sampling

Indicator for the level of the insulating fluid

External operation tap changer

Attachments for lifting

Connection from the tank to the ground

Bridge from low voltage to the ground

Surge relief valves

Medium voltage nozzle terminals

Low voltage nozzle terminals

IMEM Pad-Mounted Transformers are cabinets which include accessories that can be connected to underground power distribution systems. The set is mounted on a concrete pad and used for outdoor-type services.

Pad-Mounted Transformers are generally used for residential areas, touristic developments, shopping centers, hotels and those places where security and aesthetics are a deciding factor.

INSTALLATION

COMPONENTS AND

ACCESSORIES

DESCRIPTION

Pad-Mounted Transformer

CONSTRUCTION

Pad-Mounted Transformers are self-cooled in an insulating fluid and are classified as an ONAN type (Oils-Natural-

Air-Natural).

They are produced to operate at an altitude of 1000 or 23000 meters above sea level, with an overheating of 65ºC,

along with a room temperature that does not exceed 40ºC and the average temperature within a 24 hour-period

that does not exceed 30ºC, or coast type transformers with a room temperature that does not exceed 50ºC and an

average temperature within a 24 hour-period that does not exceed 40ºC, according to the client's specifications.

These are built with coated cores of grain-oriented silicon steel which have a high magnetic permeability,

manufactured in UNICORE machines to achieve the least of the losses in vacuum. The AT/BT coils are

manufactured with electrolytic copper wires and/or aluminum of low electrical resistance in different types of

insulation according to their needs. The tanks are built with stainless or carbon steel sheets, depending on the

requirement, and they go through a white metal blast cleaning process, an application of an anti-rust epoxy primer

and a high resistance polyurethane varnish. The insulating fluid is free of polychlorinated biphenyl of the naphthenic

type (NXM-J-123-ANCE) or biodegradable vegetable oil of high flash point, according to the customer's

specifications.

IMEM Pad-Mounted Transformers are manufactured in accordance with the following:

Single-phase pad-mounted transformer, for connecting in radial feed systems or ring main systems.

From 25 KVA to 167 KVA

Three-phase pad-mounted transformers, for connecting in radial feed systems or ring main feeding systems.

From 30 KVA to 2500 KVA

Accessories for the lever (three-phase only)

Attachments for slipping

Attachments for lifting

Cabinet

Connection from the tank to the ground

Connection from low voltage to the ground

Bridge from low voltage to the ground

Bar for connections to the ground in medium voltage

Sword-type nozzles in low voltage

Well-type or bolt-type nozzles in medium voltage

Supports for elbow-type connectors

Isolators

INSTALLATION

COMPONENTS AND ACCESSORIES

CONSTRUCTION

Indicator of the insulating fluid level (three-phase of 225 kva or higher, only)

Quadrant-type thermometer (three-phase of 225 kva and higher, only)

Compound gauge supply (three-phase of 225 kva and higher, only)

Drain and Sampling valves

Superior connection for the filter press and for the airtightness (hermetism) test

Surge relief valves

Tap changer

Cut-out fuse

Short-circuit link fuse of partial coverage

Indicator plate

Stencil data of the capacity

Handhole/ manhole assembly (three-phase only)

OPTIONAL ACCESSORIES ACCORDING TO THE CLIENT'S SPECIFICATIONS

Failure indicator

Thermo-magnetic switch for low voltage

IMEM Dry-type potency and distribution transformers are formed by the nucleus-coil active part, without the submergence in any insulating fluid and may be impregnated with varnish using a vacuum or may be encapsulated. Dry-type potency and distribution transformers are generally used indoors in office buildings, hospitals, hotels, shopping centers, petrochemical and textile plants or where the installation of the equipment is done near where people work or live.

.

Dry-type potency and distribution transformers are self-cooled by natural ventilation (AN), or by forced air cooling (ANAF)

Dry-Type Transformer

DESCRIPTION

They are produced to operate at an altitude of 1000 or 2300 meters above sea level, with a temperature overheating

of 150ºC, along with a room temperature that does not exceed 40ºC and the average temperature within a 24 hour-

period that does not exceed 30ºC, according to the client's specifications.

The AT/BT coils are manufactured with electrolytic copper wires and/or aluminum of low electrical resistance in different types of insulation according to their needs.

The cabinets are built with stainless or carbon steel sheets, depending on the requirement, and they go through a white metal blast cleaning process, an application of an anti-rust epoxide primer and a high resistance polyurethane varnish. The dry ventilated transformers with class "H" insulation are prepared for work in closed environments. For their safe operation, especially in case of fire they are compact and maintenance free designs. Compared to other alternatives, they have the advantage of having a low percentage of insulating materials, reducing the emission of toxic gases, mainly CO.

Dry-type potency and distribution transformers are manufactured according to the following:

-Dry-type transformers with closed cabinet, according to NEMA regulations (National Electrical Manufacturers Association), depending on the client's specifications.

-Dry-type transformers without cabinet (normally used when installed inside a board).

Attachments for slipping

Attachments for lifting

Nucleus grounding

Connection from the tank to the ground

Connection from low voltage to the ground

Bridge from low voltage to the ground

Bar for connections of nozzles or footing (or pads)

Indicator plate

Stencil data of the capacity

INSTALLATION

COMPONENTS AND ACCESSORIES

EMBOBINADORAS BROOMFIELD

IMEM Submersible-type distribution transformers are designed to be installed in wells or vaults that occasionally may suffer floods, so they have to be a dead front type with accessories to connect to underground distribution systems. Submersible-type distribution transformers are commonly used in hospitals, historical places or where aesthetics and space are essential.

Submersible-type transformers are self-cooled in an insulating fluid and are classified as an onan type (Oils-Natural-Air-Natural). They are designed for outdoor services inside a well that has a high level of humidity, with saline environments and pollution by hydrocarbons, lead and ozone. They are produced to operate at an altitude of 1000 or 2300 meters above sea level, with a temperature overheating of 65ºC, along with a room temperature that does not exceed 50ºC and the average temperature within a 24 hours-period that does not exceed 40ºC, according to the client's specifications. These are built with coated cores of grain-oriented silicon steel which have a high magnetic permeability, manufactured in UNICORE machines to achieve the least of the losses in vacuum. The AT/BT coils are manufactured with electrolytic copper wires and/or aluminum of low electrical resistance in different types of insulation according to their needs. The tanks are built with stainless or carbon steel sheets, depending on the requirement, and they go through a white metal blast cleaning process, an application of a primer rich in zinc, an antirust epoxy primer and a high resistance polyurethane varnish. The insulating fluid is free of polychlorinated biphenyl of the naphthenic type (NMX-J-123-ANCE) or biodegradable vegetable oil of high flash point, according to the customer's specifications.

Submersible-Type Transformer

DESCRIPTION

CONSTRUCTION

IMEM Submersible-type distribution transformers are manufactured according to the following:

Single-phase pad-mounted transformer, for connecting in radial feed systems or ring main feeding systems. From 25 KVA to 167 KVA.

Three-phase pad-mounted transformers, for connecting in radial feed systems or ring main feeding systems. From 30 KVA to 2500 KVA.

Accessories for the lever (three-phase only)

Attachments for slipping

Attachments for lifting

Connection from the tank to the ground

Connection from low voltage to the ground

Bridge from low voltage to the ground

Connectors for connecting the wire shields to the ground (single-phased only)

Bar for connecting all the cable shields to the ground (three-phase only)

Spring-type nozzles in low voltage

Well-type nozzles in low voltage

Supports for elbow-type connectors

Disconnecting switches

Indicator of the insulating fluid level (three-phase of 225 KVA or higher, only)

Quadrant-type thermometer (three-phase of 225 KVA and higher, only)

Compound gauge supply (three-phase of 225 KVA and higher, only)

Drain and sampling valves

Superior connection for the filter press and for the airtightness (hermetism) test

Surge relief valves

Tap changer Cut-out fuse

Short-circuit link fuse of partial coverage

Indicator plate

Stencil data of the capacity

Hand hole assembly (three-phase only)

SINGLE-PHASE AND THREE-PHASE SUBMERSIBLE-TYPE TRANSFORMERS

INSTALLATION

COMPONENTS AND ACCESSORIES

IMEM Potency-type transformers are ready to be mounted on a

platform, foundation or a similar structure, in order to be used in

aerial feeding systems.

The Potency-type transformers are commonly used in buildings,

offices, warehouses, direct coupling to boards, etc.

Power transformers are self-cooled in insulating liquid, air and water and are manufactured according to customer specifications, according to the type of cooling you can find various systems:

ONAN, ONAN/ONAF, ONWF, ONAN/ONAF/ONAF, etc. They are manufactured to operate at an altitude of 1000 or 2300 meters above sea level, with an over-elevation of temperature of 65 ° c, with an ambient temperature not exceeding 40 c and the average temperature in a 24-hour period does not exceed 30 c, or according to the customer's specifications These are built with coated cores of grain-oriented silicon steel which have a high magnetic permeability, manufactured in UNICORE machines to achieve the least of the losses in vacuum. The AT/BT coils are manufactured with electrolytic copper wires and/or aluminum of low electrical resistance in different types of insulation according to their needs.

The tanks are built with stainless or carbon steel sheets, depending on the requirement, and they go through a white metal blast cleaning process, an application of an anti-rust epoxy primer and a high resistance polyurethane varnish. The insulating fluid is free of polychlorinated biphenyl of the naphthenic type (NMX-J-123-ANCE)) or biodegradable vegetable oil of high flash point, according to the customer's specifications.

Potency Transformer

DESCRIPTION

CONSTRUCTION

UNICORE MACHINE BROOMFIELD EMBROIDER

IMEM Potency transformers are manufactured according to the following:

Sealed tank system

Inert gas system

Expansion tank system

Frame-type base

Cover with a pressure relief device (higher than 2500 KVA)

Registers

Supplies for slipping

Supplies for lifting, lever, and support for screw or mechanical jacks

Medium voltage nozzle terminals

Low voltage nozzle terminals

External tap changer

Plate for connections to the ground

Insulating fluid level indicator

Insulating fluid temperature indicator

Winding temperature indicator (higher than 5 MVA)

Vacuum and pressure indicator (higher than 2500 KVA)

Drain and sample valves and connection for press filter

Indicator plate

Stencil data of the capacity

Gas accumulation relay (only with an expansion tank system)

Sudden pressure relay (when specified)

Fans, bombs and control (depending on the client's specifications)

IMEM Substation-type distribution transformers are ready to be

mounted on a platform, foundation or a similar structure, in order to

be used in aerial feeding systems.

Substation-type distribution transformers are commonly used in

buildings, offices, factories, warehouses, shopping centers, direct

coupling to boards, etc.

INSTALLATION

COMPONENTS AND ACCESSORIES

SubstationTransformer

DESCRIPTION

Substation-type distribution transformers are self-cooled in an insulating fluid and are classified as an ONAN type (Oils-Natural-Air-Natural). They are produced to operate at an altitude of 1000 or 2300 meter above sea level, with an overheating of 65ºC, along with a room temperature that does not exceed 40ºC and the average temperature within a 24 hours-period that does not exceed 30ºC, or coast transformers with a room temperature that does not exceed 50 c and an average temperature within a 24 hours-period that does not exceed 40 c, according to the client's specifications. These are built with coated cores of grain-oriented silicon steel which have a high magnetic permeability, manufactured in UNICORE machines to achieve the least of the losses in vacuum. The AT/BT coils are manufactured with electrolytic copper wires and/or aluminum of low electrical resistance in different types of insulation according to their needs. The tanks are built with stainless or carbon steel sheets, depending on the requirement, and they go through a white metal blast cleaning process, an application of an anti-rust epoxy primer and a high resistance polyurethane varnish. The insulating fluid is free of polychlorinated biphenyl of the naphthenic type (NMX-J-123-ANCE) or biodegradable

vegetable oil of high flash point, according to the customer's specifications.

IMEM Substation-type distribution transformers are manufactured according to the following:

Single-phase substation-type 1 or 2 nozzles higher than 167 KVA.

Three-phase substation-type higher than 150 KVA.

Drain valve, inferior connection for press filter and sampling valve

Magnetic indicator of the insulating fluid level

Quadrant-type thermometer

Superior connection for filter press

External operation tap changer

Supply for compound gauge indicator

Lever attachment

Attachments for slipping

Hand register

Attachments for lifting

Connection from the tank to the ground

Surge relief valves

Medium voltage nozzle terminals

Low voltage nozzle terminals

Indicator plate

Stencil data of the capacity

CONSTRUCTION

INSTALLATION

COMPONENTS AND ACCESSORIES

We have a testing laboratory according to the iso-17025 standard, where we carry out tests on all the equipment

manufactured, in addition to carrying out research and verification of non-standardized characteristics.

APPLICABLE ROUTINE TESTS

Ohm resistance of the electrical winding

Insulation resistance

Dielectric stiffness of the insulating fluid

Applied voltage

Induced voltage

Transformation relation

Polarity and phase sequence

Vacuum losses

Conducting current

Losses due to the load

Impedance voltage

Airtightness (hermetism)

Coating thickness

APPLICABLE REGULATIONS

NOM-001-SEDE-VIGENTE

NOM-002-SEDE-VIGENTE

NOM-J-123-ANCE-VIGENTE

NOM-J-116-ANCE-VIGENTE

NOM-J-169-ANCE-VIGENTE

NOM-J-284-ANCE-VIGENTE NOM-J-287-ANCE-VIGENTE

NOM-J-351-ANCE-VIGENTE NOM-J-285-ANCE-VIGENTE

Laboratory

LABORATORY PHENIX

IMEM Transformadores Internacionales S.A. de C.V. ventas1@imem.com.mx

CARR. CELAYA-APASEO EL GRANDE KM47 cotizaciones1@imem.com.mx

Col. Rancho Nuevo, Apaseo el Grande, C.P. 38160 customerservice@imem.com.mx

www.imem.com.mx

PHONE: +52 01 (461) 20 21 700 01 (461) 616 23 63 www.transformadorelectrico.com

01 (461) 616 73 99 01 (461) 616 34 55

01 (461) 616 23 62

Transforming electricity

in business.

IMEM Transformadores @imemTrans Transformador IMEM Imemtransformadores