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protective relay

Protective Relays

  • Setting, testing and calibration of electro-mechanical type relays

  • Setting and testing of micro-processor type relays, such as, Schweitzer, ABB, RFL, Beckwith, Multilin, GE, Siemens and Basler

  • “End to End” system testing utilizing Doble F6150 / Omicron 356 satellite technology

power line carrier

Power Line Carrier

  • Line Traps

  • Line Tuners

  • Transmitters and Receivers

  • “End to End” system testing

electrical power lines

Functional Testing

  • Circuit verification of AC and DC circuits from schematics, three-lines, one-lines and manufacturer drawings

power circuit breaker

Power Circuit Breakers

  • Breaker timing, velocity, voltage withstand and contact resistance

power transformer

Power Transformers

  • Power Factor (Doble)

  • Transformers Turns Ratio (TTR)

  • Winding resistance

  • Megger

  • Verification of:  operation of the rapid pressure rise relay, nitrogen system alarms, temperature monitor system, oil level system and testing of the annunciator

current transformers

Current Transformers

  • Ratio

  • Polarity

  • Saturation

Coupling Capacitator Voltage Transformers

Coupling Capacitator Voltage Transformers (CCVT)

  • Power Factor (Doble)

  • Ratio

  • Megger

motor operated disconnects

Motor Operated Disconnects (MOD)

  • Setup, functional and contact resistance

station battery and charger

Station Battery & Charger

  • Discharge Tests

  • Impedance Tests

  • Specific Gravity, voltage and contact resistance of straps

  • Verification of battery charger float and equalize voltages, current limit, output alarms and wiring

meters

Meters

  • Kwh (money meter), as well as, panel board and transducer testing

electrical substation cables

Cables

  • Hipot and/or Megger

control panel wiring

Control Panel Wiring

  • Terminate cables, modify internals to new design

ground grid

Ground Grid

  • Three Point fall of potential method and test all stingers

electrical inspector

Project Management

  • On site project management and quality assurance.  Providing expertise in correct installation and knowledge of devices.

In compliance with PRC - 005 NERC reliability requirements

Sentinel Electric Inc. provides testing and commissioning services to utilities for their protection and control projects. On a typical project (apparatus change out or relay protection upgrade), Sentinel Electric Inc. will dedicate a Commissioning Engineer to prepare, oversee, test and install those components and systems. Our Commissioning Engineers are experienced in commissioning of greenfield projects as well as modifications. Some of the Commissioning Engineer’s responsibilities are to review the design drawings, develop and execute test plans provide technical direction to the protective relay engineer, equipment specialist and control board wiremen, and perform final in-service checks when bringing the equipment online for the first time. To learn more about our substation testing, contact us today.

Electrical Substation Testing

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