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Supplier: Radwell International
Description: DISCONTINUED BY MANUFACTURER, VOLTAGE MONITOR, 3 PHASE, 380 VAC, TIME DELAY. FREE 2 YEAR RADWELL WARRANTY
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Supplier: Newark, An Avnet Company
Description: TIME-DELAY RELAY; Coil Type:DC; Torque Max:-; Current Rating:3A; No. of Phases:-; Resistance:-; Inductance:-; Inertia:-; Coil Voltage DC Max:24V; Coil Voltage VDC Nom:24V; Contact Current Max:3A; Contact Voltage AC Nom:120V RoHS Compliant: Yes
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Supplier: Time Mark Corporation
Description: driving an electromechanical relay. When correct voltage and phase rotation are applied, the internal relay will energize. A fault condition will de-energize the relay. When the fault is corrected, the monitor will automatically reset. An adjustable restart delay
- Voltage Sensing Range: 85 to 120 volts
- Frequency Sensing Range: 60 Hz
- Supply Voltage Range: 120 volts
- Operating Temperature: -20 to 131 F
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Supplier: Newark, An Avnet Company
Description: VOLTAGE PROTECTOR 3 PHASE 3 WIRE UNDER VOLTAGE WITH EXTERNAL TIME DELAY INPUT 120 VOLTS L/L RELAY OUTPUT WITH VOLT FREE CONTACTS FREQUENCY 50/60HZ RELAY DE-ENERGIZE OPTION DELAY 0/10 SECS AUXILIARY 250V 50HZ AC
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Supplier: Newark, An Avnet Company
Description: VOLTAGE PROTECTOR 3 PHASE 3 WIRE UNDER VOLTAGE WITH EXTERNAL TIME DELAY INPUT. 120 VOLTS L/L RELAY OUTPUT WITH VOLT FREE CONTACTS 60 HERTZ RELAY ENERGIZE OPTION. DELAY 0/10 SECS(STD) AUXILIARY. 120V 60HZ AC
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Supplier: Newark, An Avnet Company
Description: VOLTAGE PROTECTOR 3 PHASE 4 WIRE UNDER VOLTAGE WITH EXTERNAL TIME DELAY, INPUT. 230 VOLTS L/N, RELAY OUTPUT WITH VOLT FREE CONTACTS FREQUENCY. 50/60 HERTZ. RELAY ENERGIZE ****** OPTION. DELAY 0/10 SECS(STD) AUX 115V 50HZAC DIFF 1%STD
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Supplier: CARLO GAVAZZI Automation Components
Description: This 3-phase voltage and frequency monitoring relay provides the utmost flexibility in very compact dimensions, as it offers a wide range of features in a mere 22.5mm product width. It provides protection against phase reversal, phase loss and if the phase
- Maximum Current: 8 amps
- Maximum AC Switching Voltage: 250 volts
- Maximum DC Switching Voltage: 24 volts
- Operating Temperature: -4 to 140 F
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Supplier: Time Mark Corporation
Description: The Model 2501 3-Phase Monitor is designed to continuously monitor 3-phase power lines for abnormal conditions. This device features solid-state voltage and phase-angle sensing circuits, which drive a SPDT electromechanical output relay. When the correct
- Voltage Sensing Range: 336 to 456 volts
- Supply Voltage Range: 480 volts
- Operating Temperature: -4 to 131 F
- Features: Automatic Reset, Programmable Time Delay, Visual Indicator
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Supplier: Panel Components & Systems, Inc.
Description: adjustable time delay of 0 to 20 seconds is provided. Correct setting of the trip point and time delay will ensure protection against motoring in the event of a generator failure and prevent tripping due to transients encountered during synchronising. A red LED indicates
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Supplier: Panel Components & Systems, Inc.
Description: adjustable time delay of 0 to 20 seconds is provided. Correct setting of the trip point and time delay will ensure protection against motoring in the event of a generator failure and prevent tripping due to transients encountered during synchronising. A red LED indicates
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Supplier: Panel Components & Systems, Inc.
Description: reached. An externally adjustable time delay is provided to prevent nuisance tripping. As is common with all the M200 relays, on over units the relay energises when the input signal exceeds the trip point On under units the relay de-energises when the input signal
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Supplier: Panel Components & Systems, Inc.
Description: reached. An externally adjustable time delay is provided to prevent nuisance tripping. As is common with all the M200 relays, on over units the relay energises when the input signal exceeds the trip point On under units the relay de-energises when the input signal
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Supplier: Time Mark Corporation
Description: enter the setup mode.This unit has a user selectable relay option for High-Low or DPDT. It can also be user-selected to energize on fault or de-energize on fault. The user can select automatic or manual restart on the Model 25. The Model 25 True RMS 3-Phase Monitor can be either
- Voltage Sensing Range: 80 to 550 volts
- Frequency Sensing Range: 50 to 60 Hz
- Supply Voltage Range: 24 volts
- Operating Temperature: -20 to 130 F
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Supplier: Allied Electronics, Inc.
Description: 3-Phase Relay for detection of incorrect phase sequence, total and partial phase loss. Supply range from 208 to 690 VAC covered by two multivoltage relays. For mounting on DIN-rail or plug-in module. The device detects regenerated voltages up to 85% of the
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Supplier: Allied Electronics, Inc.
Description: 3-Phase Relay for detection of incorrect phase sequence, total and partial phase loss. Supply range from 208 to 690 VAC covered by two multivoltage relays. For mounting on DIN-rail or plug-in module. The device detects regenerated voltages up to 85% of the
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Supplier: TE Connectivity
Description: Characteristics Actuating System : DC Input Voltage (VDC) : 700 Mechanical Attachment Product Mount Type : Panel Product Mounting Feature Type : Flange with Mounting Holes Product Type Features Phase : Single Protection Function : Overvoltage Relay Options : Time Delay
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Supplier: WorldWide Electric Corporation
Description: Provides optimum inverse-time delayed protection of loads against excessive temperature rises due to overload Provides optimum inverse-time delayed protection of loads against excessive temperature rises due to phase unbalance Minimizes heating of induction motors during
- Full Load Current Range: 2.2 to 3.2 amps
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Supplier: Colby Instruments, Inc.
Description: 4.40 ns 4.40 ns Typical Absolute Accuracy: 0.1% +/- 2 ps per binary step 0.1% +/- 2 ps per binary step Insertion Loss (typical) -3.0 dB point @ min. delay 1.26 GHz 1.26 GHz -3.0 dB point @ max. delay 665.0 MHz 665.0 Mhz 12.0 GHz @ min. delay -10.28 dB -10.28 dB
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Supplier: Allied Electronics, Inc.
Description: The PMPU and PMDU Series provide protection for any 208-480 V three-phase system. The relay is energized and the LED is on when the phase sequence and all voltages are correct. Any one of the five fault conditions will de-energize the relay and provide fault indication
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Supplier: Allied Electronics, Inc.
Description: The PMPU and PMDU Series provide protection for any 208-480 V three-phase system. The relay is energized and the LED is on when the phase sequence and all voltages are correct. Any one of the five fault conditions will de-energize the relay and provide fault indication
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Supplier: RS Components, Ltd.
Description: Premium range of On-Delay timers which provide the user with a dynamic multi-range and multi-voltage product to ensure your application is covered 7 timing ranges supported offering timer functions from 1 second to up to 100 hours. Single phase & three phase options available.
- Minimum Time Interval: 0.1 seconds
- Maximum Time Interval: 100 hours
- Number of Contacts: 2
- Function Type: Multi Function
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Supplier: Automation24, Inc.
Description: The 3Ø- Voltage protection relay 600VPR-170/290-CU from Selec has an operating range of 170/290V [600VPR-170/290V] with an adjustable trip delay time from 0.2 to 10 seconds. The voltage protection relay 600VPR-170/290-CU is simple to install with its DIN rail
- Supply Voltage Range: 170 to 290 volts
- Mounting: DIN Rail
- Features: Other
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Supplier: Radwell International
Description: UNDERVOLTAGE RELAY, VARIMETER, BA9043, 1-10SEC TIME DELAY, LED INDICATING, 2 CHANGEOVER CONTACTS, 3 PHASE, 3AC 50/60HZ 120V, 3AMP 250V. FREE 2 YEAR RADWELL WARRANTY
- Frequency: 60 Hz
- Phase: Three Phase
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Supplier: Automation24, Inc.
Description: The 3Ø-digital voltage protection relay 900VPR-2-280/520V-CU from Selec with operating voltage 280-520V AC(L-L), 160-300V AC(L-N) with an adjustable trip delay time from 0 to 99.9 seconds. The voltage protection relay 900VPR-2-280/520V-CU is simple to install with
- Supply Voltage Range: 160 to 520 volts
- Mounting: DIN Rail
- Features: Other
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Supplier: Selectric, Inc.
Description: Time delay relays, run light, lockable handle, submersible model available
- Motor Voltage: 460 volts
- Three Phase Power: 200 HP
- NEMA Size: 3
- Features: AC Motor Starter
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Supplier: CARLO GAVAZZI Automation Components
Description: Small, low-cost mono function timer with adjustable time setting. Only 2-wire connection for easy and fail-safe use (see diagram). For mounting on DIN-rail or directly on surface by screws. The timer is used e.g. to delay small industrial relays or 3-phase
- Minimum Time Setting: 4.999999999999998 seconds
- Maximum Time Setting: 0.16666666666666666 hours
- Repeatability: 0.2 ±%
- Operating Temperature: -4 to 122 F
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Supplier: Littelfuse, Inc.
Description: sensitive equipment. The isolated, 10A, DPDT relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage unbalance, and time delays are knob adjustable. The phase loss setpoint and the acceptable
- Features: Other
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Supplier: Littelfuse, Inc.
Description: The isolated, 10A, SPDT and 2A alarm output relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage unbalance, and time delays are knob adjustable. The phase loss setpoint and the acceptable
- Mounting: DIN Rail
- Features: Other
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Supplier: OMRON Automation and Safety
Description: available Power-OFF delay models available 5-amp DPDT relay switches when timing cycle completes Short, 80 mm (3.15 inch) panel mounting depth with socket allows space-efficient control panel design Field-selectable time ranges from front panel Wide range AC/DC supply
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Supplier: Time Mark Corporation
Description: The Model 2722 Current Unbalance Detector is designed to monitor 3-phase AC current (or compare three single-phase AC currents). A solid-state electronic sensing circuit drives an internal DPDT relay which energizes during normal, balanced conditions. An unbalanced
- Measuring Range: 1 to 5 amps
- Input Voltage: 190 to 250 volts
- Frequency Range: 400 Hz
- Operating Temperature: -20 to 131 F
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Supplier: Schneider Electric, Automation & Control
Description: phase, 3-phase or 4-phase loads up to 100A The TeSys GY “dual tariff” modular contactors are designed for switching all single phase, 3-phase or 4-phase loads up to 63A The TeSys GF impulse relays are designed for opening and closing of
- Number of Poles: 1 to 4
- Device Technology: Electromechanical
- Standard Rating: IEC Rated
- Features: Motor Contactor Only
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Supplier: Process Technology
Description: range. Minimum time setting: one minute. Lithium battery backup provides minimum 5-year reserve (un-powered). Ensures no memory loss if the power fails. Rated power: 3.5VA. Connections: 6.3 x 0.8 mm tab terminals (conforms to DIN 46244). OPTIONS AVAILABLE (CONSULT FACTORY)
- Number of Digits (or Characters): 4
- Operating Temperature: 14 to 131 F
- Functions: Interval Delay Timer
- Programming: Keypad, None
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Supplier: ValueTronics International, Inc.
Description: tripping time of the protection device under test Earth resistance and soil resistivity with auxiliary rods Earth ground resistance (with T2100 optional accessory) Non-trip earth loop impedance Phase sequence indication Voltage drop on main power lines Power Analysis, Harmonic analysis
- Features: Current Leakage Tester, Ground Bond Testers
- Types of Measurements: Insulation Resistance
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DPDT output options depending on model. True RMS Relay: Supports 3-phase voltage monitoring with True RMS measurement, under/over voltage and frequency monitoring, phase asymmetry, phase sequence monitoring, phase failure monitoring, and adjustable delay functions. Learn More (read more)
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EHV Protective Relaying on SCEC System
The backup relaying consists of either a separate set of harmonic restraint differential relays, or a set of either 2- or 3 -zone distance phase relays and directional time delay , and instantaneous overcurrent ground relays on both the EHV and HV terminals …
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Ocean Thermal Energy Conversion power system development. Phase I: preliminary design. Final report
The radial feeder circuits are protected by torroidal zero sequence current transformers (Type BYZ) around all 3 phase leads connected to 3 (one per phase) single phase or one 3 phase overcurrent relay with instantaneous and long- time delay units.
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Performance of multi-relay coded cooperative diversity in asynchronous code-division multiple-access over fading channels
transmission delay during the relaying phase (see the timing diagram in Fig. 3 ), where each cooperating relay [f1(k) · · · fV (k)] will have to wait for a time delay of Dk,v for the preceding relay to finish transmission …
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Impact of midpoint STATCOM on the coordination between generator distance phase backup protection and generator capability curves
Table I shows the severest cases of time delay in the operating time ( time delay > 3 cycles) and (TUR) of the generator distance phase backup protection relay (21) for both line-to-line and three phase faults.
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Power System Commissioning and Maintenance Practice
… testing, should carry a well equipped box of test equipment which should include wires, terminations, short-circuits, a variety of resistors, capacitors, switches, miniature time - delayed relays , miniature clip-on amme- ter, single- phase and 415 V 3 -phase supply leads, box …
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Joint Cooperative Diversity and Scheduling in OFDMA Relay Systems
Instead of using time -varying phase rotation at each relay like [ 3 ], we apply a fixed cyclic delay at each relay to realize diversity in the frequency domain.
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Discussion on ¿Field suppression of turbo-alternators¿ before the Supply Section, 9th December, 1959
These relays on the stator terminals would give a wrong indication in the case of a 3 - phase short-circuit, and therefore a time delay is provided between the closing of the relay contacts and the suppression of the negative excitation.
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http://www05.abb.com/global/scot/scot229.nsf/veritydisplay/444e5ded91a9d1d385256f320072e1e9/$File/IB40-201.9bREL352%20v1.13%20.PDF
STAT TEST TLDT SRT OPTI TRIP BFI SRI 3 RI R B GS FALM TALM CALM Relay Self-Check Status Phase comparison TEST ENABLE Signal Test Mode Computation of Local Delay Time Monitor Standing Relay Trip Signal Display Opto Input Status Relay …
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Performance Comparison of Distance Protection Schemes for Shunt-FACTS Compensated Transmission Lines
The only cases of relay failure to operate for 3 - phase in- ternal fault were observed in the DCB scheme as a result of the communication coordination time delay setting of its instanta- neous Zone 2 element.
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CR4 - Thread: Substation Protection
"Bus differential" "Transformer differential" "permissive trip" "transfer trip" "remote trip" " delayed trip" " Instantaneous trip" "stuck breaker relay " "single phase trip" " 3 phase fault" "ground relay" " time overcurrent relay" "distance relaying" "first zone fault" "second zone fault" "Overeaching …