JBC/JBCG/JBCV Phase and Ground Overcurrent Relay
Manufacturing for this product has been discontinued.
JBC/JBCG/JBCV Phase and Ground Overcurrent Relay
Manufacturing for this product has been discontinued.
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IJS Synchronism Check Relay
Manufacturing for this product has been discontinued. As an alternative, please refer to the 889 relay.
IJS Synchronism Check Relay
Manufacturing for this product has been discontinued. As an alternative, please refer to the 889 relay.
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IFV Time Delay Voltage Relay
Manufacturing for this product has been discontinued. As an alternative, please refer to the P94V relays.
IFV Time Delay Voltage Relay
Manufacturing for this product has been discontinued. As an alternative, please refer to the P94V relays.
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GGP Power Directional Relays
The usual application of the GGP relay is to prevent motoring of a turbine-driven generator. Its intended purpose is to protect turbines not equipped with integral protective means if its steam supply is lost or reduced. Under such a condition the generator will take power from the bus and run light as a synchronous motor, driving the turbine at normal speed. With insufficient or no steam present in the turbine, the blades may be damaged by overheating as developed by windage. Under normal operating conditions, such heat is dissipated into the steam.
GGP Power Directional Relays
The usual application of the GGP relay is to prevent motoring of a turbine-driven generator. Its intended purpose is to protect turbines not equipped with integral protective means if its steam supply is lost or reduced. Under such a condition the generator will take power from the bus and run light as a synchronous motor, driving the turbine at normal speed. With insufficient or no steam present in the turbine, the blades may be damaged by overheating as developed by windage. Under normal operating conditions, such heat is dissipated into the steam.
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IAV Time Delay Voltage Relay
The Type IAV relays are single phase induction disk relays designed to respond, with time delay, to either an increasing or a decreasing voltage, or both. Some models are frequency compensated, and some include an instantaneous unit (hinged armature type). Most models listed in the Selection Guide include a target seal-in unit on all contacts.
IAV Time Delay Voltage Relay
The Type IAV relays are single phase induction disk relays designed to respond, with time delay, to either an increasing or a decreasing voltage, or both. Some models are frequency compensated, and some include an instantaneous unit (hinged armature type). Most models listed in the Selection Guide include a target seal-in unit on all contacts.
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SBD Differential Voltage Relay
The Type SBD11B is a single-phase, high-speed differential relay. It is specifically designed to provide bus differential protection, but may also be used for differential protection of shunt reactors. A high impedance, voltage measuring circuit with overcurrent supervision is used for fault detection. The utilization of static circuitry results in very short operating times. Output isolation is obtained with a telephone-relay, and a target seal-in unit is provided. A voltage selecting link allows the relay to operate on 48, 125, or 250 VDC.
SBD Differential Voltage Relay
The Type SBD11B is a single-phase, high-speed differential relay. It is specifically designed to provide bus differential protection, but may also be used for differential protection of shunt reactors. A high impedance, voltage measuring circuit with overcurrent supervision is used for fault detection. The utilization of static circuitry results in very short operating times. Output isolation is obtained with a telephone-relay, and a target seal-in unit is provided. A voltage selecting link allows the relay to operate on 48, 125, or 250 VDC.
PVD Differential Voltage Relay
The Type PVD21 relay is a single-phase, high-speed, high-impedance, voltage-operated relay designed to provide protection in bus differential schemes. The Type PVD21 utilizes the same operating principle (high impedance voltage) as the earlier PVD models, but provides faster operating speeds and higher seismic capabilities. Typical operating speed is 20 ms at 4X pickup. The Type PVD21 is mechanically interchangeable with the earlier PVD21 models, and provides additional output contacts.
PVD Differential Voltage Relay
The Type PVD21 relay is a single-phase, high-speed, high-impedance, voltage-operated relay designed to provide protection in bus differential schemes. The Type PVD21 utilizes the same operating principle (high impedance voltage) as the earlier PVD models, but provides faster operating speeds and higher seismic capabilities. Typical operating speed is 20 ms at 4X pickup. The Type PVD21 is mechanically interchangeable with the earlier PVD21 models, and provides additional output contacts.
NGV Voltage Relay
The type NGV relay is a high-speed relay designed for calibration on decreasing voltage (drop-out), or increasing voltage (pick-up) and may be continuously energized at rated voltage. The NGV19 is a special relay available for application as a battery monitor.
NGV Voltage Relay
The type NGV relay is a high-speed relay designed for calibration on decreasing voltage (drop-out), or increasing voltage (pick-up) and may be continuously energized at rated voltage. The NGV19 is a special relay available for application as a battery monitor.
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IFCV TOC Relay with Voltage Restraint
The Type IFCV relays are draw out, induction disc time-overcurrent relays having voltage restraint and inverse time characteristics.
Applications
- System fault backup protection
Protection and Control
- Time O/C unit with voltage restraint
IFCV TOC Relay with Voltage Restraint
The Type IFCV relays are draw out, induction disc time-overcurrent relays having voltage restraint and inverse time characteristics.
Applications
- System fault backup protection
Protection and Control
- Time O/C unit with voltage restraint
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IFC Time-overcurrent Relay
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IAC Time-overcurrent Relay
Type IAC relays are used in the protection of industrial and utility power systems against either phase or ground overcurrent. They are single phase (although some models contain more than one unit), non-directional, current sensitive, AC devices. The basic operating mechanism (the time unit) produces one of several available operating characteristics. The operating time is inversely related to operating current which permits close coordination with other protective devices.
IAC Time-overcurrent Relay
Type IAC relays are used in the protection of industrial and utility power systems against either phase or ground overcurrent. They are single phase (although some models contain more than one unit), non-directional, current sensitive, AC devices. The basic operating mechanism (the time unit) produces one of several available operating characteristics. The operating time is inversely related to operating current which permits close coordination with other protective devices.
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IFC Time-overcurrent Relay
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