Edmar Group
Transformers, Irapuato, Guanajuato
We are ready to solve your electrical needs
More than 20 years of experience support us
Edmar Group
Transformers, Irapuato, Guanajuato
WHAT ARE OUR ELECTRICAL SERVICES?
Transformer Manufacturing
At Grupo Edmar we manufacture transformers of the highest quality and with all the tests stipulated for their correct operation.
According to your needs.

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Quality
Our transformers are made with the highest quality elements and materials, achieving optimal performance and fulfilling their function 100%.
Resistance and Power
Our products undergo resistance and ohmic testing of windings and insulation, voltage testing, tightness testing, and applied and induced potential testing, ensuring their proper functioning, effectiveness, and efficiency.
Durability
Despite being subjected to long working hours, our transformers will be reliable and durable.
Electrical Services
We provide professional services in the electrical and mechanical sectors, comprised of a team of experienced professionals utilizing cutting-edge technology, offering solutions based on a policy of quality and service.
According to your needs.
1
Security
As our priority. Industrial safety is fundamental to the development of our activities, both for our clients and our staff.
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Experience
Our services always meet the highest quality standards, and we strive for excellence. We fulfill our commitments to our clients, and our experience allows us to provide optimal services.
3
Human Development
Human talent is our most valuable resource and the key to our success. We respect their integrity and encourage their development.

What Electrical Services Do We Provide?
OUR ELECTRICAL SERVICES
Electrical and dielectric testing of transformers, autotransformers, and power reactors
Primary Tests
Core strength tests
Measuring winding resistance with DC
Angular displacement, transformation ratio and polarity tests
Winding insulation resistance test
Measurement of dielectric losses and insulation capacitance
Dielectric tests on nozzles, measurement of C1 and C2
Dielectric tests of insulating oil
Excitation current tests
Laboratory analysis of insulating oil, Physical-Chemical-Electrical, Gas and Liquid Chromatography, PCBs
OUR ELECTRICAL SERVICES
Electrical and dielectric testing of instrument transformers
Current Transformers
Insulation resistance test.
Polarity test.
Transformation ratio test.
Saturation test.
Power Factor.
Ohmic resistance.
Power Transformers
Insulation resistance test
Polarity test
Transformation ratio test
Power Factor
Ohmic resistance
OUR ELECTRICAL SERVICES
High Voltage Switches
115, 230 and 400 kV
Primary Tests
Visual inspection of the dashboard, devices, functionality.
Insulation resistance tests.
Opening-closing speed and simultaneity.
Contact resistance test.
Dielectric loss testing, FP.
OUR ELECTRICAL SERVICES
Power Cables
Primary Tests
Insulation resistance test
DC High Voltage Test
OUR ELECTRICAL SERVICES
Commissioning of Substations
Electric
Primary Tests
Pre-operational and commissioning tests of generators, transformers, etc.
OUR ELECTRICAL SERVICES
Commissioning of Electrical Substations
Primary Tests
Pre-operational and commissioning tests of generators, transformers, etc.
OUR ELECTRICAL SERVICES
Low, medium and high voltage electrical installations
Primary Tests
Installation of power, lighting and contacts, conduit installation, installation of switches, starters, etc.
OUR ELECTRICAL SERVICES
Predictive-Preventive-Corrective Maintenance
Predictive
Minimize the possibility of foreseeable failures, anticipating probable equipment failures according to the process and in response to events outside the process.
Preventive
Activities carried out to maintain the equipment in optimal working conditions, through monitoring and periodic testing to verify the operation of the equipment.
Corrective
Rehabilitation of the equipment involved after a failure, supplying the necessary equipment and materials.
OUR ELECTRICAL SERVICES
Predictive-Preventive-Corrective Maintenance
Predictive
Minimize the possibility of foreseeable failures, anticipating probable equipment failures according to the process and in response to events outside the process.
Preventive
Activities carried out to maintain the equipment in optimal working conditions, through monitoring and periodic testing to verify the operation of the equipment.
Corrective
Rehabilitation of the equipment involved after a failure, supplying the necessary equipment and materials.
OUR ELECTRICAL SERVICES
Emergency generators
Primary Tests
General cleaning of the equipment (generator-engine and cabin in general)
Cooling system check: engine belts, water hoses, radiator cap, coolant level (refill if necessary), radiator inspection and system leaks
Fuel system check: fuel hoses, diesel leaks, fuel tank purge, fuel level and quality, and external tank check (if applicable)
Manual cleaning
Electrical system review: Batteries, acid level and terminal cleanliness, battery charge (DC alternator). Review of terminals and power cables, as well as voltage and amperage of the equipment operating with and without load.
Control Review: correct operation, oil temperature and pressure within normal ranges, hour meter and equipment frequency
Equipment testing on average 15 minutes after service to observe the behavior and operation of the equipment
Refilling oil and antifreeze
OUR ELECTRICAL SERVICES
Physical Grounding Systems and Lightning Rods
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Soil georesistivity measurement - Ohmic resistance testing of grounding systems - Lightning rod installation - Grounding grid installation
OUR ELECTRICAL SERVICES
Electrical and dielectric testing of unitary substation transformers
Primary Tests
DC winding insulation resistance test.
Angular displacement, transformation ratio and polarity test.
Insulation resistance tests on windings and core.
Measurement of dielectric losses, capacitance and power factor of the windings.
Dielectric tests on nozzles, measurement of C1 and C2.
Dielectric testing of insulating oil, FP and Dielectric Strength.
Laboratory analysis of insulating oil, Physical-Chemical-Electrical, Gas and Liquid Chromatography, PCBs.
OUR ELECTRICAL SERVICES
Low and Medium Voltage Boards
4.16, 7.2 and 13.8 kV
Primary Tests
Visual inspection of the board.
Verify all bus and branch connections are properly tightened, according to the manufacturer's instructions and/or specifications.
Bus insulation resistance test.
DC high voltage test.
Ohmic resistance test of bar contacts.
OUR ELECTRICAL SERVICES
Low and Medium Voltage Switches
from 0.4 to 7.2 and 4.16 kV
Primary Tests
Visual inspection of the dashboard
Verify that all bus and branch connections are properly tightened, according to the manufacturer's instructions and/or specifications.
Bus insulation resistance tests
DC high voltage test
OUR ELECTRICAL SERVICES
Low and Medium Voltage Electric Motors up to 13.8 kV
Primary Tests
Visual inspection
Ohmic resistance of the windings
Resistance of DC windings
Insulation resistance of the windings
Insulation resistance to power cables
Operational tests
OUR ELECTRICAL SERVICES
Protection, measurement and control of medium and high voltage electrical systems
Primary Tests
CCC study and protection coordination, verification of the operation and calibration of protection relays, implementation of protection schemes and updates.
OUR ELECTRICAL SERVICES
Protection, measurement and control of medium and high voltage electrical systems
Primary Tests
CCC study and protection coordination, verification of the operation and calibration of protection relays, implementation of protection schemes and updates.
OUR ELECTRICAL SERVICES
Thermography and digital imaging
Primary Tests
Thermography of electrical equipment, transformers, switches, high and low voltage panels.
OUR ELECTRICAL SERVICES
Supply of Equipment and Materials
Based on the analysis of maintenance results, it is recommended to replace, substitute, or implement systems that integrate equipment. BES has a network of qualified suppliers and distributors, within a cutting-edge technical-economic framework and competitive quality, with a range of equipment from low voltage to high voltage.
Some supplies are:
High voltage equipment at 115 kV, such as 1600 Amp. vertical opening blades at 123 kV.
Measuring and testing equipment, Dielectric strength meter, Impulse, Insulation resistance
Medium voltage equipment, Fuse circuit breakers, Lightning arresters, Fuses, Pedestal-type or substation-type transformers, oil-filled and dry-type transformers, Current and potential transformers, Capacitors
Stationary nic-cad, lead-acid batteries for 125 Vdc banks
Protection Relays, 50/51
Alarm panel for power substations
Accessories for 480 V conduits
Conductors for special applications, terminals, connectors
OUR ELECTRICAL SERVICES
Supply of Equipment and Materials
Based on the analysis of maintenance results, it is recommended to replace, substitute, or implement systems that integrate equipment. BES has a network of qualified suppliers and distributors, within a cutting-edge technical-economic framework and competitive quality, with a range of equipment from low voltage to high voltage.
Some supplies are:
High voltage equipment at 115 kV, such as 1600 Amp. vertical opening blades at 123 kV.
Measuring and testing equipment, Dielectric strength meter, Impulse, Insulation resistance
Medium voltage equipment, Fuse circuit breakers, Lightning arresters, Fuses, Pad-mounted or substation-type transformers, oil-filled and dry-type transformers, Current and potential transformers, Capacitors
Stationary nic-cad, lead-acid batteries for 125 Vdc banks
Protection Relays, 50/51
Alarm panel for power substations
Accessories for 480 V busways
Conductors for special applications, terminals, connectors
OUR ELECTRICAL SERVICES
Assembly of High and Medium Voltage Electrical Substations
Primary Tests
Assembly of high and medium voltage electrical substations.
Overhead Power Substations
SF6 Electrical Substations
Unitary Electrical Substations
OUR ELECTRICAL SERVICES
Direct Current Systems
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Verification of battery and charger parameters.
OUR ELECTRICAL SERVICES
Supply and Installation of Wildlife Protection for Electrical Substations
Supply and Installation of Wildlife Protection for Electrical Substations
Repair and Maintenance of
Transformers
We provide proper preventive maintenance for transformers to prevent potential damage, maximizing their lifespan and minimizing repair costs. We also repair transformers when they fail.
1
Speed
In our repair and maintenance services, our priority is speed and effectiveness. To minimize time and increase productivity levels.
2
Security
Our experts will be in charge of carrying out the repair or maintenance process of all transformers so we can guarantee their correctness and excellent operation after the
3
Human Development
Human talent is our most valuable resource and the key to our success. We respect their integrity and encourage their development.
