Shermco Industries Protection & Control Relay Technician in Midland, Texas


Join our leading team in electrical power system maintenance, repair, testing & training. Due to continued growth, we are seeking experienced P&C; Relay experts to work in our Protection and Controls Field Services group on substation retrofits and new construction.

Why Work for Shermco?

  • Full-Time or Contract opportunities available.
  • Strong benefits package and highly competitive compensation plan, plus lucrative overtime plan.
  • A growth oriented environment that is upbeat, good morale and team oriented.
  • Industry-leading electrical and safety training.

Minimum Qualifications: to qualify for consideration, you must meet the following minimum qualifications and requirements:

  • High School Diploma or equivalent; certificate from technical school or utility training program a desired; BSEE a plus.
  • Must have a minimum of 3 years related experience in the areas of transmission line and substation protective relay control system and SCADA/Automation checkout, installation, testing and trouble-shooting; an equivalent combination of education and experience may substitute.
  • Demonstrated thorough proficiency regarding protective relay, substation communication, and/or SCADA/Automation theory and application, general electrical/electronic theory and computer hardware and software skills.
  • Experience desired with most of the following:
    • RTU’s: GE D20/400, RTU/IED Communications – 4 wire data and 2 wire RS 485/RS 232, RTU protocols
  • Experience with IEDs: SEL 2032, SEL 421, 311A, 311B, 311C, 311L, 734, Bitronics, ION 7350, Qualitrol TTL 1000
  • Experience with test sets and software: Doble 6150, ASE 2000 Test Kit, Arbiter, Protest, RTS, Megger MPRT & EZ CT 2000.
  • Experience with relays: Schweitzer SEL 421, 311A, 311B, 311C, & 311L, ABB DPU 2000R, HU, CA16, KD & LCBII, GE PVD, BDD, STD, CEY, L90, D60, B90, Areva
  • Must be able to work safely around high-voltage electricity.

Job Responsibilities and Expectations:

  • Perform installation, commissioning, testing and maintenance of protective relaying equipment, relaying schemes, DFR equipment, SCADA systems, distribution automation systems and associated communication equipment.
  • Perform function testing of substation control circuits on relay panel, transformers & circuit breaker changeouts.
  • Perform end-to-end relay testing using Doble ProTesT software to verify carrier and fiber systems.
  • Assist in developing written standard commissioning, testing and maintenance procedures for protective relaying, DFR's, RTU's, IED's, Distribution Automation and associated communication systems.
  • Manage projects onsite throughout the duration and effectively interface and own the relationship with customers and their vendors.

Additional Requirements:

  • Must be able to pass a pre-employment drug test and periodic, unannounced random drug tests.
  • Must complete a satisfactory criminal background check.
  • Must be available to work overtime and regularly travel out of town for extensive periods (up to 10 weeks).
  • Must be able to climb ladders, stand for extended periods, drive regularly, with or without reasonable accommodations. Must be able to pass a fit for duty physical exam.
  • Must have a valid driver’s license, and currently have and be able to maintain a good driving record.


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