In the event of a fault, protective relays safeguard electrical systems, equipment, and people. Replacing aging electromechanical (EM) relays with digital ones is fast, cost-effective, and delivers a host of benefits if designed and integrated properly. Reaping the full benefits of digital relay technology requires time and skill to appropriately design and integrate.
Vertiv’s highly experienced integration engineers can help you identify the specific relay features, capabilities, and configuration that will best meet your facility’s requirements. By relying on our expertise, you’ll quickly be able to obtain the greatest level of protection for your electrical system while maximizing the values of your relay investment.
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Technical Summary
Design and Engineering
Vertiv™ protection engineers are highly trained professionals with years of experience and a broad knowledge base, allowing them to provide the best solution for your system, regardless of manufacturer. In order to ensure our solution meets all of your needs including cost, space, time, functionality and regulatory compliance, our team will meet with you to understand your specific requirements. We will then design a retrofit solution utilizing the best technology for your system. Once a solution has been designed, complete schematics and diagrams are developed and reviewed prior to construction.
Upon acceptance of design, construction and assembly of the panel, cabinet, or door are completed and delivered to your site for installation.
Relay Logic and Settings
Another important part of the design process includes accurate relay logic and settings. Correct logic settings affect the speed, selectivity, and reliability of your relays. They ensure that the correct relay elements are being used in the trip scheme and that the relay control logic will produce the desired results. Our protection engineers are available to help you design and implement logic settings to ensure your scheme delivers the required protection for your operation.
Installation Services
Professional assembly of your newly designed relay protection system improves the speed and accuracy of installation. Vertiv technicians will remove your existing electromechanical relays, controls, and associated control wiring; install the new protection panel assemblies; terminate the new wiring harness to the existing terminal blocks; and install additional control wiring as needed. Technicians will also verify all factory drawings to ensure the documentation reflects the as-installed design.
Startup and Commissioning Services
Once installed, the new relays require startup and commissioning to ensure proper operation. A technician uploads the settings into the relays and tests to verify calibration and operation. Trip check procedures are conducted to verify proper sensing and satisfactory operation of all protective relay devices. Current and/or voltage secondary injection tests are performed to verify the correct annunciation and operation of associated devices. Vertiv technicians will conduct some or all of the following tests:
- Wiring diagram check with functional and point-to-point wiring checks
- Insulation resistance measurements
- Relay device testing
- Current and voltage transformer testing
- Verification of relay alarm and trip settings
- Primary and secondary injection testing
- End-to-end testing
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