mobile substations

Mobile Substations

Mobile SubstationsMobile Substations

Mobile Substations

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Ideas that work for the continuity of Service

• Increase the continuity of service during emergencies by replacing a complete substation in case of failure condition • Ensure service during maintenance • Temporary over-capacity for - new neighborhoods - new industrial plants - remote locations - rural electrification projects• For permanent and semi-permanent installations• Integrate communications within electrical services

• Reduced maintenance costs• Continuity of service by reducing downtimes• Electrical flexibility for maximum utilization and return on investment• Maximum mobility• Rapidly placed in service• Quickly available for service• Maximum reliability through of ordinated design• Minimum clearance height for greater utilization• Maximum KVA with minimum weight

IEM Mobile Substation 45 MVA, FOA,HV: 230 kV, LV:23 kV, 60 Hz Wye-Wye


A mobile substation is a complete electrical substation mounted on one or more trailers.

IEM mobile substations are turn-key solutions designed and manufactured to comply with customer speci-fications in order to provide a top class product.

Benefits of IEM Mobile Substations:

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Applications of IEM Mobile Substations:

IEM transformers are designed, manufactured and tested in compliance with ANSI/IEEE, NEMA, IEC standards and customer specifications.Since 1995, IEM has been ISO-9001 certified in recognition of the quality systems implemented for the production of its multiple products.

IEM was established in 1948 by Westinghouse Electric Corporation and Mexican investors. Today, it is one of the most diversified electrical industries in Mexico, and it’s a part of GRUPO CONDUMEX, one of the largest Mexican industrial groups.

Our mission is to manufacture electrical equipment in cost-effective manner, in order to deliver price-competitive products with the quality and service that satisfy our customer’s requirements.


Mobile Substations

2

Ideas that work for the continuity of Service

• Increase the continuity of service during emergencies by replacing a complete substation in case of failure condition • Ensure service during maintenance • Temporary over-capacity for - new neighborhoods - new industrial plants - remote locations - rural electrification projects• For permanent and semi-permanent installations• Integrate communications within electrical services

• Reduced maintenance costs• Continuity of service by reducing downtimes• Electrical flexibility for maximum utilization and return on investment• Maximum mobility• Rapidly placed in service• Quickly available for service• Maximum reliability through of ordinated design• Minimum clearance height for greater utilization• Maximum KVA with minimum weight



A mobile substation is a complete electrical substation mounted on one or more trailers.

IEM mobile substations are turn-key solutions designed and manufactured to comply with customer speci-fications in order to provide a top class product.

Benefits of IEM Mobile Substations:

3

Applications of IEM Mobile Substations:

IEM transformers are designed, manufactured and tested in compliance with ANSI/IEEE, NEMA, IEC standards and customer specifications.Since 1995, IEM has been ISO-9001:2000 certified in recognition of the quality systems implemented for the production of its multiple products.

IEM was established in 1948 by Westinghouse Electric Corporation and Mexican investors. Today, it is one of the most diversified electrical industries in Mexico, and it’s a part of GRUPO CONDUMEX, one of the largest Mexican industrial groups.

Our mission is to manufacture electrical equipment in cost-effective manner, in order to deliver price-competitive products with the quality and service that satisfy our customer’s requirements.

Mobile Substations

Components

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Lightning ArresterProtection level in coordination with transformer insulating level. In case windings have two or more voltage levels, multiple lightning arresters are used (one for each voltage level), which are interchanged at the same time the winding voltage level is changed.

Disconnecting SwitchSingle or three pole with capacity to interrupt transformer magnetizing currents. Can be operated locally or from a remote location.

HV BreakerDead tank SF6 circuit breakers are commonly used, with motor-wound spring operating mechanism, operable on even loss of auxiliary power.

S&C Circuit SwitcherCircuit switchers feature SF6 gas filled interrupters and single-pressure puffer technology for restrike-free, non-current chopping performance. Used when limited capacity due to space or alarm conditions are presented.

Power FusesNormally mounted between the lightning arrester and the transformer. Selected in accordance with voltage and current ratings.

Potential transformer and current transformerUsed to reduce voltage to 120 V and current to 5A for metering and protective relays. They also provide insulation between the primary and secondary circuits. For 25 kV and above PT’s and CT’s are suitable for outdoor use and below this range for indoors or outdoors in accordance with customer specifications.

High Voltage Section

Transformer Section

Mobile Substations 6

Trailer Chassis

All electrical equipment is distributed on a trailer base designed for this special application. The equipment is located so its weight is distributed for maximum mobility and at the same time, keeping electrical distances with enough safety margins for a reliable operation.

Trailer chassis normally include: dual wheels with multiply pneumatic tires, air brakes with emergency breakaway on all wheels, fittings for connecting the brake system to the tractor, choke blocks for holding the trailer stationary when disconnected from the tires, four heavy-duty screw jacks for leveling and removing the load from tires, towing eyes and storage compartments.

The trailer chassis is designed to meet with state and federal road regulations.

The mobile substation will travel at 60 mph on first class paved highway.

Since security is an important item on mobile substations, the trailer may be checked with off road testing for dynamic stress measurement using strain gauges.

Auxiliary transformer for control powerOil immersed, single or three phase and permanently connected to the low voltage of the main transformer.

LV BreakerA vacuum or SF6 breaker normally provides low voltage protection against short circuit currents. The breaker and its controls are mounted on the trailer’s low voltage end or in a different trailer depending on customer specifications.Three phase, metal enclosed, metal clad single busbar switchgears may be used for indoor installation. This kind of switchgear has a hermetically sealed primary enclosure, which provides protection against accidental contact and is independent of environmental effects

Protective RelaysFor protection against abnormal transformer differentials and sudden gas pressures. A wide variety of relays can be installed to meet specification needs

Lightning ArrestersFor each voltage rating coordinated with transformer insulation level to allow ample margin between protective level and insulation strength.

a) Potential transformer, b) Disconnecting switch with ground switch blade

c) Dead tank SF6 circuit breaker with rotating table and, d) lightning arrester.

Nelson trailer chassis and jeep dolly specially designed for mobile substations

a b c d

High Voltage Section

1. Lightning Arrester 2. Disconnect Blades 3. HV Breaker

Transformer Section

4. HV Bushings 5. Core type Transformer 6. Forced oil and air cooling (FOA) 7. DTC 8. LV Bushings

Low Voltage Section

9. Fused Disconnect Switches Cabinet 10. Auxiliary transformer 11. LV Breaker 12. Lightning Arrester 13. Power Fuses

14. Substation Metering, Control and Protection cabinet 15. Trailer chassis 16. Cable Rheels

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Low Voltage Section

Lightning Arresters and Low Voltage Breaker on the low voltage

section of a 10 MVA, FOA Mobile Substation

BushingsBushings can be supplied as standard ceramic or with silicon insulation. Bushings are selected in accordance to voltage and current requirements.

TransformerCore or Shell type, with same thermal, mechanical, dielectric and economic advantages of IEM power transformers. - Compact design to optimize the transformer volume and reduce its total weight. - Designed to handle average winding temperature rise of 65, 75 or 95 C. - NOMEX/ pressboard or NOMEX insulation

Forced oil and air cooling (FOA)Forced oil cooling consists of a seamless tubular cooler heat exchanger plus a submerged pump and motor .A bearing wear monitor is proposed which stops the pump in the event bearing wear has reached and unsafe level.

Tap ChangersThe transformer could have one or more de-energized tap changers (DTC) on high or low voltage winding, delta-wye switches or on load tap changer (LTC) on high or low voltage winding. On all cases, external operating mechanism allows the voltage connections to be changed without opening the tank. LTC may be Resistive or inductive type and DTC may be Series-Parallel type.

High temperature liquidSeveral high temperature oil types may be used for the transformer: Midel®, FR3®, Silicone oil or Beta fluid

Monitoring EquipmentOnline monitoring is an important tool for early fault detection and real time condition assessment. IEM may provide online DGA and moisture monitoring, online PD monitoring and temperature and load monitoring.

45 MVA, FOA, Core type power transformer with HV and LV silicon bushings

IEM Mobile Substation 20 MVA, FOA, HV: 34.5 KV, LV: 13.8 KV 60 Hz, Delta-Wye

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Local monitoring and data acquisition for electrical parameters

LV feeder breakers

SDH equipment

Metering, Monitoring andCommunication Equipment

Mobile Substations

Transformer protections (analogue) and substation protections (digital). Protection, control and measurement board, with necessary equipment to protect, control and send state and alarm signals from the corresponding feeder to the substation supervisory control system.

Relays for indoor service, designed for extreme environmental conditions. Equipped with display, alarms (LED’s) and control buttons.

SEL® Differential protection: Phase & ground distance relays, directional over current and differential protection relays.

Battery bank in order to ensure electrical power for all data acquisition and control equipment.

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Local protection equipment:

Remote protection equipment:

Communication Equipment:

In order to give an added value to the substation regarding communication technologies, IEM may provide band width services (voice, data and video) with technologies like SDH (Synchronous Digital Hierachy) and PDH (Plesiochronous Digital Hierarchy) with different connection types for traffic and information flows. Access networks can be based on different technologies: Copper twisted pair, Fiber/copper (ONU), Fiber/coax and fiber optics (unimode and multimode).

The substation teleprotection is flexible for several communication configurations. It may be equipped with redundancy modules, alarm integration and remote monitoring by a SCADA system.

The protection and operation of an IEM mobile substation may include remote monitoring and communication technologies to increase safety in order to ensure the continuity of service, the reliability and integrity of electrical equipment.Communications are needed when a mobile substation is connected in a ring and has data transfer with other substations


IEM Mobile Substation 10 MVA, FOA,HV:110/69 kV, LV:13.8/6.9 kVCore type, CFE, 1982

IEM Mobile Substation, 15/20 MVA, FOA/FOA, HV: 115 kV, LV: 13.8 kV, 60 Hz Delta-Wye Core Type, PEMEX, 1987

IEM Mobile Substation, 30 MVA , FOA, HV: 110 (±2 x 2.5%) kV, LV: 34.5/13.8 kV, 60 Hz , Delta-Wye Core Type, CFE Merida, 2001

IEM Mobile Substation, 40 MVA , FOA, HV: 115 (±2 x 2.5%) kV, LV: 34.5/13.8 KV, 60 Hz Wye-Delta, Shell TypeCFE, 2001 Short Circuit Tested

IEM Mobile Substation, 40 MVA , FOA,HV: 138/ 115 kV, LV: 34.5/13.8 KV, 60 HzDelta-Wye, Shell TypeCFE, 2002

IEM Mobile Substation 45 MVA, FOA,HV: 230 kV, LV:23 kV, 60 Hz Wye-WyeCore Type Luz y Fuerza del Centro, 2005

IEM Mobile Substation 45 MVA, FOA,HV: 230 kV, LV:23 kV, 60 Hz Wye-Wye Luz y Fuerza del Centro

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Experience

IEM started designing and manufacturing mobile substations in 1960 using Westinghouse technology.IEM is able to produce shell or core mobile substations with primary voltage up to 230 KV and transformer power rate up to 45 MVA.


InfrastructureTechnology

IEM technology derives from the knowledge, expertise and experience gained through almost 60 years of design and manufacture of transformers, coupled with our past associations with Westinghouse and ABB, which enriched IEM with the following:

- Medium core type based on Westinghouse/Sharon-Muncie Hamilton - Large core type based on GE-Pittsfield - Shell type from Westinghouse-Muncie

IEM has a strong engineering group, trained at the highest technical level, and is one of the few transformer manufacturers that can offer both shell and core type designs applying state-of-the-art tools and techniques.

Mobile substations are designed in accordance with customer’s necessities and requirements.

The most advanced software programs are used to ensure the performance and reliability of our equipment:

- Thermal and mechanical analysis by FEM - Electrical and magnetic field analysis by FEM - Drafting by 2D and 3D CATIA systems

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The manufacturing plant has been continually updated with modern equipment and manufacturing processes to increase efficiency and improve the quality of our products:

- Automatic cutting machine for electric steel with remote monitoring - Step lap stacking - Vertical CNC winding machines for high voltage transformers in order to achieve a more uniform winding in its natural working position - Vapor phase with automatic cycle control and remote monitoring - Core tightening

All IEM test procedures comply with ANSI specifications.

A new Models Laboratory was implemented on 2006 for supporting Power and Distribution Technology.

IEM test floor has the ultimate test and measurement technologies, such as the new Loss Measurement System with an Accuracy on Power of <0.1% of reading @0.050 Power Factor, which was implemented on May 2007.

Production

Since 1995, IEM has been ISO-9001 certified in recognition of the quality systems implemented for the production of its multiple products.

Quality Assurance

Laboratories and Test Floor

LV Internal Assembly of a Mobile SubstationShell Type Transformer

Tank wall mechanical analysis by FEM

Internal Assembly of a Mobile Substation Core TypeTransformer

Automatic cutting machine for electric steel

Core tightening

Mobile Substation on IEM test floor

Mobile Substations12

Contact us

INDUSTRIAS IEM S.A de C.V VÍA DR. GUSTAVO BAZ No. 340 TLALNEPANTLA, EDO. DE MÉXICO C.P. 54000, MÉXICO Phones: 52 (55) 57 29 97 51 52 (55) 57 29 97 06 Fax: 52 (55) 53 10 70 93 52 (55) 53 10 58 54

e-mail:[email protected]@condumex.com.mx [email protected]

CONDUMEX INC. (HEADQUARTERS) 2590 114th STREET #200 GRAND PRAIRIE, TX 75050 Phones: (972) 352 2300 (800) 925 6473 Fax: (972) 352 2400 PO BOX 911520 DALLAS, TX 75391-1520 e-mail: [email protected]

Sales Office in USA: Plant and Sales Office:

www.condumex.com

Mobile Substations

Contact us

INDUSTRIAS IEM S.A de C.V VÍA DR. GUSTAVO BAZ No. 340 TLALNEPANTLA, EDO. DE MÉXICO C.P. 54000, MÉXICO Phones: 52 (55) 57 29 97 51 52 (55) 57 29 97 06 Fax: 52 (55) 53 10 70 93 52 (55) 53 10 58 54

e-mail:[email protected]@condumex.com.mx [email protected]

CONDUMEX INC. (HEADQUARTERS) 2590 114th STREET #200 GRAND PRAIRIE, TX 75050 Phones: (972) 352 2300 (800) 925 6473 Fax: (972) 352 2400 PO BOX 911520 DALLAS, TX 75391-1520 e-mail: [email protected]

Sales Office in USA: Plant and Sales Office:

www.condumex.com

mobile substations

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