Tender Details
Description / Scope of Work
Pakistan State Oil Company Limited invites quotations for the supply of one Transformer-Rectifier unit for the HSD pipeline cathodic protection system at Machike Terminal in Sindh province. The equipment will be installed at the terminal location and must meet specified technical parameters including 200-230V single-phase 50Hz input with adjustable DC output of 0 to maximum volts at maximum amperes per channel (50VDC 15A capacity). This is a price enquiry with quotation deadline of 01 September 2026, reference number OP-19905YP and SAP number 6100017877.
The transformer-rectifier unit must incorporate comprehensive protection features including AC input thermal/magnetic circuit breaker, MCB at each channel DC output, DC output surge arrester, and fuses at AC input and DC output points. The equipment requires manual voltage control via potentiometer with thyristor phase angle control enabling 0-100% output variation. Cooling shall be natural convection air-cooled (AN type) suitable for indoor pad mounting with maximum ambient temperature of 45 degrees Celsius. The unit must include DC voltmeter and ammeter metering, pilot light indication, ripple reduction filter, and epoxy powder-coated RAL7032 cabinet construction with IP40 ingress protection rating.
Prospective vendors should submit their best quoted prices on or before 01 September 2026. The quotation must include detailed specifications confirming compliance with the stated technical requirements. Interested parties are advised to contact Pakistan State Oil Company Limited at PSO House, Khayaban-e-Iqbal, Clifton, Karachi-75600, telephone (021) 9203866-85, fax (021) 9203796 for further clarification or to obtain complete bid documents and instructions.
For Bidders: Our Analysis PAKISTANTENDER INSIGHT
Independent analysis by PakistanTender — not part of the official notice. Always confirm details against the original tender document.
PSO is seeking a single transformer-rectifier unit for pipeline cathodic protection at its Machike terminal.
The equipment is specialised with precise electrical specifications (50VDC 15A output channels, thyristor control, ripple filtering) suggesting this is a replacement or new installation requiring engineering compliance rather than commodity procurement. The tight 15-day quotation window and specific technical detail indicate PSO has clear requirements. This is a one-off capital procurement likely in the 500K–2M PKR range based on equipment complexity; bidders must demonstrate thyristor rectifier design expertise and Pakistani installation capability.
Who can bid: Typically, suppliers of electrical equipment to PSO must hold valid NTN registration, SECP incorporation (for companies), and engineering credentials or manufacturer authorisation for thyristor-based power electronics. PSO may require equipment certification, factory test certificates, and technical documentation. The notice does not explicitly state licensing or PEC requirements; compliance with relevant electrical safety and quality standards is presumed mandatory.