ERLPhase Power Technologies Ltd. products

The S-PRO sub-harmonic protection relay protects generators, wind turbines, and SVC equipment from uncontrollable sub-harmonics which cause

The L-PRO 4000 is a digital, microprocessor-based line distance protection system that provides comprehensive distance based line protection for medium to extra-high-voltage transmission lines. Apply the L-PRO 4000 system for high-speed distance and directional protection and complete control in multi-breaker applications typically found in ring or breaker-and-a-half substation arrangements.

The L-PRO 2100 provides comprehensive distance based line protection, DFR quality fault oscillography, standard ring bus capability, swing recording, event logging, SCADA control and metering in a fully integrated protective relay solution.

The B-PRO 4000 relay provides bus and substation differential protection (low impedance) with CT saturation security, integrated breaker failure, overcurrent protection and SCADA control in a fully integrated protective relay solution. The B-PRO 4000 relay also provides control, automation, metering, monitoring, high capacity for DFR quality fault oscillography, dynamic swing recording and sequence of events logging. The B-PRO 4000 relay is suitable for simple bus applications with up to 6 feeders and 2 differential zones with breaker failure, or 4 feeders and 1 transformer, including separate full transformer differential protection.

The B-PRO 4000 Multi-Busbar relay provides protection for any bus bar configuration with 3 differential zones and a check zone. Its scalable architecture allows flexibility to use the most cost effective hardware combinations, based on the actual number of zones and number of current inputs in the bus system. For example, protection for 23 feeders plus one bus tie breaker can be provided using four B-PRO 4000 relays communicating with each other. The B-PRO 4000 Multi-Busbar system provides current differential bus protection, circuit breaker failure protection, end fault protection, backup over current protection, independent check zone, open CT and advanced saturation detection for EHV bus-bars. It provides control, automation, metering, monitoring, fault oscillography, event logging, and dynamic swing recording, with advanced communications in a flexible cost effective package.