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Engineering procurement

Relays & Power Quality Meters — Protection relays and Class A power quality monitoring

Selective protection and evidence-grade PQ data for compliance, disputes and fault analysis.

Selection path

Specification parameters

Selection runs Voltage → Current → Fault rating → Application → Standard → Indoor/outdoor → Insulation → OEM → Delivery → Utility acceptance → Origin → Certification → Datasheet.

01Voltage
Applied at LV – EHV via CT/VT
02Current
1 A / 5 A nominal inputs
03Fault rating
Thermal withstand per IEC 60255-27
04Application
Feeder, transformer, line differential, distance; PQ monitoring
05Standard
IEC 60255, IEC 61850, IEC 61000-4-30 Class A, IEEE C37.118
06Indoor / outdoor
Panel-mounted indoor
07Insulation medium
Air
08OEM
Confirmed per RFQ against current OEM / distributor authorisation
09Delivery status
Lead time confirmed at offer; tracked to OTIF after award
10Utility acceptance
Checked against the target DNSP/TNSP approved-equipment list for each project
11Country of origin
Declared per offer (OEM factory location stated in technical compliance matrix)
12Certification
IEC 61850 conformance; Class A certification (PQM)
13Datasheet
Issued with the technical offer — request via RFQ

How we procure

  1. STEP 1

    Specification review

    Client spec, utility standard and SLD reviewed; deviations flagged.

  2. STEP 2

    Vendor shortlist

    OEMs screened for type tests, utility acceptance and lead time.

  3. STEP 3

    Technical compliance matrix

    Clause-by-clause compliance and declared country of origin.

  4. STEP 4

    FAT

    Factory acceptance testing with witness and hold points.

  5. STEP 5

    Delivery & expediting

    Tracked to OTIF; inspection on receipt.

  6. STEP 6

    SAT & handover

    Site acceptance testing, records and datasheets handed over.

Values are indicative specification ranges, not offers. Gridlinks does not sell online: every supply is engineered against your specification, confirmed in a technical compliance matrix, and subject to current OEM / distributor authorisation.

Have a specification or scope ready?

Send us voltage class, equipment type and project phase — we respond within one business day.

Start an RFQ