Supplying Protection Devices for Feeders and Motors

• Country: Jordan
• Summary: Supplying Protection Devices for Feeders and Motors
• JOT Ref No: 59238247
• Deadline: 14 Nov 2021
• Financier: Self Financed
• Purchaser Ownership: Government
• Tender Value: Refer Document
• Notice Type: Tender
• Document Ref. No.: C-P-21-071-A
• Purchaser's Detail:
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• Description:
• Request for proposals are invited for Supplying Protection Devices for Feeders and Motors. RFP document Price: 25 JOD. Start selling documents: 27/10/2121 End selling documents: 11/10/2021 Deadline for offers: 14/11/021 Feeder management relay Specifications The feeder management relay shall provide primary protection and management of distribution feeders. Protection shall include:  Complete time overcurrent (51P, 51N, 51G), including sensitive ground  Complete instantaneous overcurrent (50P, 50N, 50G), including sensitive ground  Directional overcurrent (67P, 67N, 67G, 67_2)  Bus and Line undervoltage and overvoltage (27/59)  Negative sequence voltage (47)  Undervoltage automatic restoration (27/79)  Bus under-frequency (81U) with voltage and current level monitoring  Bus over-frequency (81O) with voltage and current level monitoring  Frequency rate-of-change (81D) monitoring  Under-frequency automatic restoration (81/79)  Neutral displacement overvoltage (59N) used to give line to ground fault coverage on high impedance grounded or ungrounded systems, which are isolated. The relay shall have a drawout construction to facilitate testing, maintenance and interchange flexibility. The relay shall operate with either wye-connected (four wire) or open-deltaconnected (three wire) potential transformers, and three phase, four wire connected current transformers. The relay shall provide a built in Automatic Transfer Scheme. With the use of up to three feeder relays, the user shall be able to implement an automatic transfer scheme intended for application to a set of three circuit breakers on a Main-Tie-Main arrangement, two of which (Incomers 1 and 2) connect sources of electrical energy to two busses, which could be paralleled through the Bus Tie breaker. The relay shall provide complete monitoring and metering functions. These shall include:  CURRENT PHASORS: Phase A RMS current, Phase B RMS current, Phase C RMS current with a % of load-to-trip accuracy of ±0.5% of fullscale  VOLTAGE PHASORS: Phase A-N (A-B) voltage, Phase B-N (B-C) voltage, Phase C-N (C-A) voltage with an accuracy of ±0.25% of full scale [Disclaimer: The above text is machine translated. For accurate information kindly refer the original document.]
• Documents:

 Tender Notice