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RETROFITTING OF 220KV & 66KV TRANSFORMER PROTECTION RELAYS IN ETD SUBSTATIONS

Tender Number: 379/2025/BTB (2025-058-PP-ETD)

PA Ref Number: 2025-058-PP-ETD

Tender Description

This project is intended to retrofit obsolete Protection relays which are installed for protection of 220kV & 66kV Power Transformer in ETD HV Substations, these Protection are in services for more than 30 years for the which is far above their life cycle age. These relays are showing frequent failure during routine maintenance and inspections. Failure of these relays cannot be detected at the time failure due to lack of self-supervision.

Issued by: Electricity and Water Authority
Internal/External: External
Invitation Method: Public (LOCAL GCC)
Initial Bond: BD 2500
Bid Validity / Initial Bond Validity Period (Days): 180 days
Tender Fees: BD 100
Contract Duration: 18 Month
Is Alternate Bid Allowed: Yes
Publish Date: Monday, 30 June 2025
Purchase Before: Wednesday, 16 July 2025
Closing Date: Wednesday, 27 August 2025
Opening Date: Thursday, 28 August 2025

Additional Notes

هدف هذا المشروع إلى تحديث مرحلات الحماية القديمة التي تم تركيبها لحماية محولات الطاقة بقدرة 220 كيلو فولت و 66 كيلو فولت في محطات النقل التابعة لإدارة نقل الكهرياء. هذه الحمايات في الخدمة لأكثر من 30 عاما، وهو ما يتجاوز عمرها الاقتراضي بكثير. تظهر هذه المرحلات أعطالا متكررة أثناء الصيانة الروتينية والفحوصات. لا يمكن اكتشاف فشل حذه المرحلات في وقت الاعطال بسبب

عدم وجود اشراف ذاتي

Mandatory/Essential Requirements:

1. The tenderer shall provide Protection Relays that fully comply with EWA ETD specifications, as outlined in the attached list below

2. The tenderer is required to submit a letter from the Original Equipment Manufacturer (OEM) confirming a 10-year warranty for the product

Category	Type / Function	Ref. No.	Model No.	Manufacturer	Country of Origin
Numerical Protection Relay	Transformer Diff.Relay	1	SEL-487E	SEL	USA
		2	RET615	ABB	Finland
		3	7UT80	Siemens	Germany
		4	MICOM P632	Schneider	France
		5	RET670	ABB	Sweden
		7	SEL-787	SEL	USA
		8	7UT613	Siemens	Germany
		9	7UT633	Siemens	Germany
	Overcurrent &Earth fault relay	1	7SJ80	Siemens	Germany
		2	Soprotec-4	Siemens	Germany
		3	SEL-751	SEL	USA
		4	SEL-351	SEL	USA
		5	REF-615	ABB	Finland
	Restricted EarthFaulted	1	SEL-587Z	SEL	USA

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How to Participate?

Those who are capable and wish to participate in the above tender have to purchase the Tender Documents online through the Bahrain Tender Board’s portal https://etendering.tenderboard.gov.bh starting from Monday, 30 June 2025
Bidders are requested to enclose with their bids the Initial Bond for the amount specified above or at the rate of 1% of the tender value whichever amount is lesser, provided that no initial bonds value shall be less than BD 100/-. (Except for the Two-envelope tenders).
For Two-envelope tenders, bidders, are requested to enclose with their bids the Initial Bond for the amount specified above.
The initial bond should be in the form of a Certified Cheque, Bank Guarantee, Insurance Policy or Cash (or as specified in the Tender Documents) valid for the duration specified above.
The bids deposit place: (As Mentioned in the Tender Documents)
This tender is subject to the provisions of the Tender Law issued by the Legislative Decree No. 36 of 2002, its amendments, and its Implementing Regulations issued by the Decree No. 37 of 2002.
In addition, these conditions have to be considered:
- Enclose copy of a valid Commercial Registration Certificate (CR) in line with the tender's subject.
- Enclose copy of a valid certificate of compliance with the employment percentages for Bahraini manpower (Bahranization Certificate) issued by the Ministry of Labour.
This advertisement is considered supplementary to the tender documents. In case of any discrepancy between the Advertisement and the Tender Document, the Tender Document prevails.
Small and Medium Enterprises are eligible to obtain 10% preference in the financial evaluation stage, when submitting the "SMEs Classification Certificate" during bidding for this tender. The certificate is awarded by Ministry of Industry Commerce and Tourism to the SMEs and can be obtained when applying on the SMEs Registration System which can be reached via the following link: https://www.moic.gov.bh/en/eServices/sme
Vendors who are not registered in the Tender Board's e-tendering system shall be required to register through the below-mentioned link, and for assistance please contact the Tender Board through email helpdesk@tenderboard.gov.bh or call on Tel No. +97317566617.
For Registration

Inquiries

For further inquiries please contact on:

Electricity and Water Authority
17995555

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