They are manufactured to run at a 1,000 or 23000 m a. s. l., with a 55°C over-rising temperature, at an ambient temperature in the vault that does not exceed 50°C, and an average temperature in a 24 hour period, that does not exceed 40°C, according to the client’s specifications.

They are constructed with silicon steel grain oriented armored cores and high magnetic permeability, manufactured in unicore machines to obtain fewer vacuum losses. HV/UV coils are manufactured with low resistance electrolytic copper and/or aluminum conductors in several insulation types according to your needs.

The tanks are built with carbon steel or stainless-steel sheets, as required, and subjected to a white metal shot blasting cleaning process, an application of a rich in zinc primer, anti-rust epoxy, and a high resistance polyurethane finish. The insulating liquid is naphthenic type polychlorinated biphenyl free (NMX-J-123-ANCE).

Submersible type IMEM distribution transformers are manufactured according to the following: One-phase pole-mounted transformers for radial power supply systems connection or ring power supply systems connection. From 25 kVA to 167 kVA Three-phase pole-mounted transformers for radial power supply systems connection or ring power supply systems connection. From 25 kVA to 167 kVA

• Levering accessories (Three-phase only)
• Sliding accessories
• Lifting accessories
• Tank connection to ground
• Under voltage connection to ground
• Under voltage bridge to ground
• Armoring wires connectors for ground connection
  (one-phase only)
• Armoring wires rod for ground connection
  (three-phase only)
• Spring type under Voltage bushings
• Pit type medium voltage bushings
• Elbow connectors supports
• Isolators
• Insulation liquid level gauge (225 kVA and upper
  three-phase only)
• Dial thermometer (225 kVA and upper three-phase only)
• Pressure gauge supply (225 kVA and upper
  three-phase only)
• Drain valve and sample valve
• Top connection for press filter and leakage test
• Overpressure relief valve
• Branch switch
• Drop-out fuse
• Partial power discharge fuse

We have a test laboratory that complies with the ISO-17025, where we check all the manufactured equipment, along with non standardized characteristics research and product verification.

• Winding ohmic resistance
• Insulation resistance
• Dielectric strength of the insulating fluid
• Applied voltage
• Induced voltage
• Transformation ratio
• Phases string and polarity
• Vacuum losses
• Excitation current
• Load related losses
• Impedance voltage
• Impenetrability
• Coating thickness

• NOM-001-SEDE-CURRENT
• NOM-002-SEDE-ENER-2014
• NOM-J-123-ANCE-CURRENT
• NOM-J-287-ANCE-CURRENT
• NOM-J-169-ANCE-CURRENT