---
title: "High Voltage Protection Testing"
ocid: "ocds-h6vhtk-056169"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-056169"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-056169.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-056169.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "NETWORK RAIL INFRASTRUCTURE LTD"
published: "2025-07-17"
---

# High Voltage Protection Testing

Buyer: NETWORK RAIL INFRASTRUCTURE LTD  
Current stage: Award  
OCID: ocds-h6vhtk-056169

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## Summary

This procurement process, initiated by Network Rail Infrastructure Ltd, involves the completion of High Voltage Protection Testing services under the industry category of railway engineering. Situated in the Wessex Inner region in the UK, this process began with an open procedure under the legal basis 2014/25/EU. The tender, noted with the title 'High Voltage Protection Testing', was aimed at absorbing cyclical and reactive substation relay protection tests, delivering services such as feeder relay and transformer protection testing. The procurement stage has reached completion with the contract awards having been made on 21st March 2025, each valued at £2,400,000. Network Rail Infrastructure, based in London, handled the buyer’s role in this procurement.

This High Voltage Protection Testing contract offers significant opportunities for businesses operating within the engineering and electrical apparatus sectors, particularly those with experience in railway services. Organisations with expertise in providing testing resources for electronic and electromechanical devices can benefit, particularly if they specialise in electrical testing and fault correction. Large-scale suppliers such as KH Engineering Services and WJ Project Services Ltd, who have secured the contracts, exemplify suitable entities with the necessary capabilities. Such contracts could spur growth for businesses adept in adapting to rigorous safety and technical standards, especially if they have competencies in similar high-stakes environments.

## Notice

The provision of testing resource able to absorb defined cyclical & reactive works, undertaking substation relay protection tests comprising of 1 Level A Protection Tester with required competency specific categories and one testing assistant per team both holding 1st aid for electrical accidents. This will be per lot. This test team will carry out Services in the following: * Feeder relay test (Electronic/ Electro-Mech): OC, EF & TLY, SIP * Rectifier & Transformer protection test (Electronic/Electro-Mech): Bulhholtz, OC & EF, biased differential (PTX) * Bus zone protection The Supplier will endeavour to correct, in the same visit, faults identified during the testing to ensure a good service on site.

### Lot Information

Lot 1

The provision of testing resource able to absorb defined cyclical & reactive works, undertaking substation relay protection tests comprising of 1 Level A Protection Tester with required competency specific categories and one testing assistant per team both holding 1st aid for electrical accidents. This will be per lot. This test team will carry out Services in the following: * Feeder relay test (Electronic/ Electro-Mech): OC, EF & TLY, SIP * Rectifier & Transformer protection test (Electronic/Electro-Mech): Bulhholtz, OC & EF, biased differential (PTX) * Bus zone protection The Supplier will endeavour to correct, in the same visit, faults identified during the testing to ensure a good service on site.

Lot 2

The provision of testing resource able to absorb defined cyclical & reactive works, undertaking substation relay protection tests comprising of 1 Level A Protection Tester with required competency specific categories and one testing assistant per team both holding 1st aid for electrical accidents. This will be per lot. This test team will carry out Services in the following: * Feeder relay test (Electronic/ Electro-Mech): OC, EF & TLY, SIP * Rectifier & Transformer protection test (Electronic/Electro-Mech): Bulhholtz, OC & EF, biased differential (PTX) * Bus zone protection The Supplier will endeavour to correct, in the same visit, faults identified during the testing to ensure a good service on site.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/041009-2025 |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 17 Jul 2025 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 21 Mar 2025 |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | £2,400,000 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Cancelled |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NETWORK RAIL INFRASTRUCTURE LTD |
| Locality | LONDON |
| Post town | South East London |
| Postcode | SE1 8SW |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI4 Inner London - East |
| ITL 3 | TLI45 Lambeth |
| Local authority | Lambeth |
| Electoral ward | Waterloo & South Bank |
| Westminster constituency | Vauxhall and Camberwell Green |
| Delivery location | TLK South West (England) |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 2 |
| Supplier names | KH ENGINEERING SERVICES; WJ PROJECT SERVICES |

## CPV Codes

### Divisions

- 31 - Electrical machinery, apparatus, equipment and consumables; lighting
- 71 - Architectural, construction, engineering and inspection services

### Codes

- 31210000 - Electrical apparatus for switching or protecting electrical circuits
- 71311230 - Railway engineering services

## Release History

- 17 Jul 2025 at 14:00 - Award - Award Notice - https://www.find-tender.service.gov.uk/Notice/041009-2025

## Notice URLs

- http://www.networkrail.co.uk
- https://ted.europa.eu/udl?uri=TED:NOTICE:060964-2019:TEXT:EN:HTML

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-056169. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-056169.json.