Protection Relays

Monitoring Relay enables flexible use.
Protection Relays

Monitoring Relay enables flexible use.

Sirius 3UG4 monitoring Relay can be flexibly adapted using wide range of parameter settings such as: phase sequence, asymmetry, undervoltage or overvoltage, delay times, and reset response. Unit has wide voltage range of 160-690 V. Unit is equipped with a display. Indication of actual value and type of fault facilitates installation and fault diagnostics. Together with contactor reversing...

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Electronic Overload Relay protects motors.
Protection Relays

Electronic Overload Relay protects motors.

Microprocessor-based, MotorGuardian(TM) MPA-1000 provides protection for 3-phase ac motors, pumps, and compressors. It installs in new or retrofit applications using 2-piece, clip-on current transformers. DIN-rail mount enclosure includes 2-line, 16-character, vacuum-fluorescent display.

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Programmable Relays suit power distribution applications.
Protection Relays

Programmable Relays suit power distribution applications.

Enclosed in NEMA Type 6 chemically treated, waterproof drawn-brass shell, MPCV Network Protector Communications Relays grant access to voltage, current, power, power factor, harmonics, and last trip information. Users select from 2 closing curves, including modified, circular, closed curve. Relays monitor network protector's internal enclosure for temperature, alarms of detected anomalies, and...

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Relays protect utility equipment.
Protection Relays

Relays protect utility equipment.

Series 24 Type WL-2 and WL Lock-Out Relays feature manual-, electric-, or self-reset capability. Manual-reset LORs have nominal trip speed of less than 8 msec. Electric- and self-reset models are available in standard-speed (12 to 15 msec) or high-speed (8 msec or less) trip configuration. Maximum of 10 decks can be stacked in one relay, providing 2 N/O and 2 N/C contacts per deck. Contacts are...

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Generator Relay protects against abnormal conditions.
Protection Relays

Generator Relay protects against abnormal conditions.

SEL-547 Distributed Generator Interconnection Relay provides utility-grade protection when using generator in all operating modes including peak shaving, base loading, islanding, and emergency backup. Relay provides most basic generator protection functions recommended by IEEE Standard P1547 including over/under voltage detection for single or 3-phase, over/under frequency detection, synchronism...

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Protection Relay monitors 2-winding transformers.
Protection Relays

Protection Relay monitors 2-winding transformers.

SEL-387A monitors and protects transformers and other 2-port electrical apparatus. Protection includes differential and overcurrent protection for 3-phase current inputs, and optional Restricted Earth Fault function. Four serial communications ports enable remote metering and control of system functions and settings via PC. Sequential-events recorder logs all changes of state within relay logic...

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Circuit Monitor detects oscillatory and impulsive transients.
Protection Relays

Circuit Monitor detects oscillatory and impulsive transients.

POWERLOGIC-® Series 4000 permanently mounted circuit monitor with transient detection (CM4000T) automatically generates alarm so that action may be taken to correct problems before facility shuts down. It detects and captures oscillatory and impulsive transients (up to 10,000V peak, line-to-line) as short as 1 microsecond in duration. CM4000T maintains historical record of number of transients...

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Monitor/Relay includes universal input.
Protection Relays

Monitor/Relay includes universal input.

SLU Universal Phase Monitor/Relay protects against over/under voltage, phase loss, unbalance and phase sequence. Universal input allows for operation from 200 to 500 V, three phase. Unit is equipped with adjustable restart delay and adjustable fault delay. Both DELTA and WYE systems may be monitored.

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