Relay Field Engineer — West

Why This Role Exists

Every protection relay and automation controller on a Tier III/IV data center must pass secondary injection testing before the system goes live — wrong trip timing or missed wiring means a failed witness test and a schedule slip. This role exists because our West Coast pipeline across California, Oregon, and Nevada needs dedicated device-level testing coverage on the ground. You test every relay and controller before energization.

When the owner's witness testing coordinator asks for trip timing data, you produce it.

• Secondary injection testing for SEL protection relays — 50/51/50N/51N elements, trip timing verification
• As-found/as-left settings documentation for relay replacements and retrofits
• CT/PT ratio verification and wiring continuity checks from relay terminals to switch gear
• GOOSE subscription verification post-installation — publish/subscribe validation on PRP networks
• Trip timing measurement against coordination study curves
• FAT bench testing: DTSC-200 ATS controllers, relay parameter verification, I/O wiring validation

Vendor Platforms: SEL, Woodward, Omicron, Doble

Software Tools:
AcSELerator, Quick Set, Wireshark

Protocols: IEC 61850 GOOSE

Standards: IEC 62439-3 (PRP/HSR), NFPA 70E, IEEE 1584

Test Phases:
Secondary injection testing, Factory Acceptance Test (FAT), Site Acceptance Test (SAT), Functional performance testing

• Performed secondary injection testing on SEL relays on an active West Coast project site
• Produced test reports in NETA/ANSI format with as-found/as-left settings comparison
• Demonstrated NFPA 70E compliance during energized MV switch gear testing

• Independently executing relay-level SAT on West Coast project sites
• Bench FAT testing for controllers (DTSC-200, easYgen 3400) with parameter and I/O verification
• Contributing to ZSI GOOSE functional testing on PRP networks

• 5+ years relay testing and electrical testing on medium-voltage power systems
• Secondary injection testing with Omicron CMC or Doble F6150 (or equivalent)
• Test report documentation per NETA/ANSI standards — as-found/as-left format
• Wiring verification: CT/PT ratio checks, continuity testing, relay-to-switch gear terminal verification
• NFPA 70E compliance: working on or near energized MV switch gear with arc-flash PPE

• NETA Level II or III certification
• SEL relay testing (AcSELerator Quick Set for settings verification)
• IEC 61850 GOOSE verification — Wireshark capture, publish/subscribe validation
• PRP network failover testing
• Based in or willing to relocate to Northern California or Pacific Northwest

Travel 40–60% during testing campaigns. West Coast sites (CA, OR, NV, WA, AZ).

Site

Hours:

early starts for LOTO, occasional weekend milestones.

Customer‑Facing Interface with prime contractor commissioning leads during witnessed testing.

Documentation Heavy — test reports, as-found/as-left records, wiring verification checklists, trip timing data sheets.

Field Safety: NFPA 70E compliance mandatory — arc‑flash PPE, approach boundaries, LOTO per relay position.

• Your test data proves the protection system works — settings, coordination curves, and GOOSE messaging validated by your measurements.
• Multi‑vendor relay testing: SEL, Woodward, CAT — broad platform exposure.
• Direct collaboration with the engineers who wrote the settings you test.
• West Coast data center growth puts you at the center of critical infrastructure construction.