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 Selector Guide
| L90 Line Differential System |
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High-speed current differential protection with three/single pole tripping. The L90, a member of the UR Family of protection relays, is an advanced current differential relay intended for application on
overhead transmission lines, including series compensated lines, and high voltage underground cables of any voltage level. Both
three pole and single pole tripping and reclosing schemes are available. The current differential scheme is based on an innovative
algorithms developed and patented by GE, and is the first digital current differential relay of its class.
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| L60 Line Phase Comparison System |
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Flexible phase comparison protection for HV and EHV transmission lines. The L60, a member of the Universal Relay Family of protection relays, is an advanced line phase comparison relay intended for
application on overhead transmission lines, including series compensated lines, and high voltage underground cables of any
voltage level. Both three pole and single pole tripping and reclosing schemes are available.
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| D90Plus Line Distance Protection System |
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Sub-cycle line distance protection & advanced automation controller. The D90Plus is a sub-cycle line distance protection system and bay controller suitable for protecting transmission lines and cables including lines equipped with series compensation. The D90Plus supports dual-breaker applications and can be used for single or three-pole tripping. The D90Plus supports different teleprotection schemes, including DCB, DCU, POTT, Hybrid POTT, and PUTT. The D90Plus also provides Synchrophasor measurement over Ethernet per IEEE C37.118. The automation controller, dedicated programmable logic separate from programmable logic for protection applications, color annunciator and HMI panels make D90Plus a stand-alone substation controller.
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| D60 Line Distance Protection System |
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High-speed transmission line protection with three/single pole tripping. The D60, a member of the UR Family of protection relays, is a digital line distance protection system, which provides protection for
medium to extra high voltage transmission lines. Use the D60 on applications requiring fast single or three phase tripping, single or
three pole re-closing, series compensated lines, with multiple breakers per terminal. The D60 also provides directional ground
overcurrent elements, which are commonly used as part of an overall line protection system, as well as full power system
monitoring.
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| D30 Line Distance Protection System |
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Cost effective high-speed, three pole, primary and backup distance protection. The D30, a member of the UR Family of protection relays, is a digital line distance protection system, which provides cost effective,
feature focused distance protection. Use the D30 on applications requiring only 3-pole tripping & reclosing, with step distance
protection only (no pilot schemes), as primary protection in sub-transmission lines or as back protection to the D60, L90 or L60
relays. The D30 also provides directional ground overcurrent elements, which are commonly used as part of an overall line
protection system, as well as full power system monitoring.
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| C70 Capacitor Bank Protection and Control System |
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Integrated protection, control and monitoring for capacitor banks. Based on the well-established and proven UR relay platform, the C70 provides both bank and system protection schemes for shunt capacitor protection. The current and voltage-based protection functions are designed to provide sensitive protection for grounded, ungrounded single and parallel capacitor banks and banks with taps, for a variety of capacitor bank configurations. Combined with the sophisticated built-in control functions turn ON/OFF banks with relative ease and flexibility for automatic voltage regulation.
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