Objectives

The primary objective of this tender is to procure an annual service for all Low Voltage (LV) switch gears and cradles at Greys Hospital, ensuring preventive maintenance, inspection, and servicing to maintain optimal operational condition and safety standards.

Scope

The scope of work includes:

• Opening and inspecting circuit-breakers, checking for dust, dirt, damage, and wear of contacts.
• Visually inspecting and cleaning circuit-breakers and associated components.
• Removing and checking arcing chambers, adjusting moving contact detachment, and inspecting current transformers and terminal supports.
• Checking and servicing circuit-breaker operating mechanisms, springs, and control parts.
• Inspecting and testing electrical accessories, contacts, and chambers.
• Performing mechanical and electrical tests, including resistance and insulation tests.
• Making necessary adjustments to trip settings and ensuring proper operation of all safety and control devices.
• Providing reports post-service for each LV switchgear.

The service must be performed on-site at Greys Hospital, with work scheduled to accommodate after-hours and weekend work as necessary. Only companies specialized in electrical switchgear maintenance, with proof of accreditation, are eligible to undertake this work.

Technical Requirements

• Provision of preventive maintenance and inspection of all LV switch gears and cradles.
• Visual inspection, cleaning, and mechanical and electrical testing of switchgear components.
• Adjustment of trip settings according to the coordination study.
• Replacement or repair of damaged springs, contacts, and other faulty components.
• Use of appropriate tools and materials, including emery cloth, lubricants, and cleaning solvents.
• Compliance with relevant standards including CIDB Grade 1 EB or above, South African Bureau of Standards, Occupational Health and Safety Act, and accreditation for LV switchgear servicing.
• Submission of detailed reports after each service, including recommendations for repairs or further actions.
• Availability to work on Saturdays and after hours, with proof of accreditation.