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| Products 91 to 120 of 129 |
| Fanox proposes two models of Thermistor protewction relay (PTC). One model is with automatic reset and the other one y manual reset. |
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The RET 541/543/545 transformer terminals bring reliability and better service to your distribution network and provide all the functions you need to protect and control your transformers. Their easy to use control panel and comprehensive communications and connec-tivity give you access to all the functions you need, whatever your application.
The RET 541/543/545 Transformer Termi-nals are designed for the protection, control, measurement and supervision of two-winding power transformers and power generatortransformer blocks in distribution networks. The terminals are loaded with functionality to suit your application. Besides the three-phase stabilized current differential function featuring 2nd and 5th harmonic restraint, the Basic version termi-nals incorporate three-phase overcurrent, non-directional earth-fault, restricted earth-fault, transformer thermal overload and phase unbalance protection.
The Multi version terminals further include overvoltage and undervoltage supervision, residual voltage and overexcitation protection, overfrequency and underfrequency protection, and underimpedance protection. Enhanced with an optional automatic voltage regulator function the terminal forms an integrated transformer management unit. A special Control version terminal with just voltage regulator and control functions is also available. |
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Multi-Winding Current Differential Protection
Use the SEL-387 Relay for protection, monitoring, and automation applications for important transformers, generators, and other power apparatus. Apply the SEL-387 Relay for protection of two-, three- or four-winding power transformers. Use overcurrent elements from combined CT inputs for backup protection. Use the thermal element to activate a control or issue a warning or alarm when the transformer overheats or is in danger of excessive insulation aging or loss of life. Capture current, hourly or daily, data about your transformer using the thermal event report. Perform predictive maintenance based on accumulated through-fault duty as compared to transformer capability as defined in ANSI Standard C57.109. Use recorded fault values or an alarm set point to initiate an evaluation of transformer maintenance needs. |
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| The DTP-B is a digital relay that provides high-speed differential and backup instantaneous differential three phase protection functions for power transformers. Different models of the DTP are available for protecting and monitoring transformers with two, three or four windings. |
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| The relays type SSG are intended for the protection against overloads, short circuits and earth faults in radial networks, ring mains or variable structure networks. |
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7PA30 single phase is for the supervision of the trip circuit of a circuit breaker with one trip coil. While 7PA30 three phase is for the supervision of the trip circuit of a circuit breaker with three selective trip coils.
The trip circuit wiring is supervised from the positive supply to the negative supply whilst the circuit breaker is open or closed.
The design, quality and rugged construction of the relay make it suitable for applications requiring high levels of reliability/dependability.
The high degree of protection guarantees reliable operation over a wide temperature range, even under extreme environmental conditions. The relay has been tested in accordance with IEC, EN and IEEE standards. The relay is CE marked.
The supervision current is always less than 1,4mA thus avoiding unwanted operation of the trip coil. Correct operation is shown via a green LED. |
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Tcs 1 - Tcs 2
The TCS is devoted to control the MCCB's disconnection circuits (trip) or the safety circuits. TCS1: circuits 24-48Vac/dc / esec. DIN rail 3 modules TCS2: circuits 110-230Vac/dc - 400Vac / esec. DIN rail 3 modules.
Modular Relay (3 modules DIN 17,5 mm) for permanent control of safety circuits, according with the Standard CEI 64-8/537.4.3, for 24÷400 V ac/dc. |
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The 7SD610 relay is a differential protection relay suitable for all types of applications and incorporating all those functions required for differential protection of lines, cables, transformers and busbars. Transformers and compensation coils within the differential protection zone are protected by means of integrated functions, which were previously to be found only in transformer differential protection. It is also well-suited for complex applications such as series and parallel compensation of lines and cables.
It is designed to provide protection for all voltage levels and types of networks; two line ends may lie within the protection zone. The relay features very high-speed and phase-selective short-circuit measurement. The unit is thus suitable for single-phase and three-phase fault clearance.
Digital data communication for differential current measurement is effected via fiber-optic cables, networks or pilot wires connections, so that the line ends can be quite far apart. |
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The voltage protection relay REU 610 is part of the RE_ 610 series of numerical relays for the protection and supervision of utility substations, and industrial switchgear and equipment.
The voltage protection relay is primary designed for the overvoltage protection of power system components, such as busbars, feeders, power transformers and capacitor batteries. The relay is also used for general power system earth-fault supervision. Further, the relay can be used for undervoltage protection of motors and overvoltage protection of capacitor batteries, for initialization of automatic busbar changeover, and for disconnecting small power units from the network in cases of network disturbance.
The voltage protection relay REU 610 supports a wide range of standard communication protocols, among them the IEC 61850, IEC 60870-5-103, Modbus, Profibus and DNP. |
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The A-ISOMETER® of the IR420 series is designed to monitor the insulation resistance of AC control circuits (IT systems) 0...300 V. If the systems to be monitored include DC components, such as switched-mode power supplies or solenoid valves, the display and operating characteristics may be affected.
The display and response values apply to pure AC systems. An external supply voltage allows de-energized systems to be monitored too.
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Relays of the SUA200 series are designed to monitor the voltage in single-phase AC or DC systems. The devices are suitable for undervoltage and overvoltage monitoring (window discriminator function). External supply voltage is not required. The response values for undervoltage and overvoltage are individually adjustable.
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The 831 voltage sensor is a single phase AC voltage sensing device that is
capable of monitoring and reacting to over and under voltage conditions.
This product is designed to be wired across terminals A1 and A2 with the
voltage that is being monitored. The two LED lamps indicate both when the
input voltage is present (Green LED) and also when the output is energized
(Red LED). The Umax dial is used to set the upper trip-point for the voltage
sensor. The Umin dial is a percentage of the Umax dial and is used to set
the lower trip-point for the voltage sensor. The timing dial is used to delay
the transfer of the contacts, from 0 to 10 seconds, when a set point has
been violated. |
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| ... products without technical information |
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Monitoring relays, Protection relays
