Our relay & recorder line provides smart, easy-to-use protection & monitoring of electrical power systems. These products include digital signal processor (DSP) & microcomputer based relays for protection & control of electrical systems, multi-channel recorders for monitoring electrical systems & data management system software for analysis & optimization of electrical systems.

Featured Products

Tesla 3000 - Disturbance Fault Record
Multi-timeframe power system recorder that simultaneously provides fault oscillography, dynamic swing recording, trend and event logging for AC, DC and digital channels.

T-Pro 8700 - Transformer Protection Relay
Complete transformer fault protection, overload protection, fault oscillography and transformer monitoring in a fully integrated relay protection solution.

L-Pro - Line Protection Relay
Comprehensive distance based line protection, fault oscillography, breaker monitoring and event logging in one integrated protection relay.

F-Pro - Feeder Protection Relay
Comprehensive feeder management protections, reclosing, demand/trend metering, event recording, falut recording, trend recording and monitoring.

B-Pro - Bus Protection Relay (three phase)
Bus and substation differential protection with CT saturation control, integrated breaker failure and overcurrent protection, metering, and fault oscillography

Visit ErlPhase at www.erlphase.com, call (416) 490-6546 or email sales@langford-assoc.com for more information.