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THYTRONIC offers a complete range of Single and Multifunction
protective relays, compact design and simple operation. Suits a wide range
of applications... |
| FEEDER & BUS-BAR Protection RELAYS |
SCC |
50-51-50N-51N-59N-67N-79 |
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SSG |
50-51-67-50N-51N-59N-67N |
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| SIF |
SCF |
SVR |
| 5600 |
25 |
27-59-59N-27P-47-27T-59T |
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Full
Specification Sheets and Drawings |
| SIF5600 Phase and earth overcurrent digital relay
DESCRIPTION
The relay type SIF is intended for the protection of electric lines and machines against overloads, shortcircuits and earth faults.
The relay SIF5600 features the following principal characteristics:
* three input measuring circuits for the line currents;
* measuring circuit, provided with a band pass filter, for the residual current;
* protection functions and final relays completely programmable by the user;
* selectable operation curves with independent or dependent time as well for the overcurrent as for the earth fault function;
* sequence of event logging;
* optional blocking circuit, to perform accelerated protection schemes;
* continuous monitoring of internal circuits.
* serial communication circuit RS485 with MODBUS® RTU protocol;
* CB Control (OPEN-CLOSE)with dedicated keylock switch
* PC Window-based SW to ease relay setup, event and record retriving |
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SCC 50-51-50N-51N-59N-67N-79
Feeder non directional phase and sensitive directional/non directional earth overcurrent digital relay with reclosure function.
DESCRIPTION
The relay type SCC is intended for the protection of distribution networks, against short circuits and earth faults.
Thanks to the auto-reclosure function together with earth fault directional function, the SCC relay accomplish to all protection functions normally provided in the delivery switchboard.
The relay features the following characteristics:
* directional and not directional earth fault;
* reclosing function fully programmable;
* digital input circuits associated with field signals;
* protection functions and final relays fully programmable;
* selectable operation curves with independent or dependent time both for the overcurrent and for the earth fault functions;
* direct read-out of all the input quantities by means of digital display on the front panel;
* counters linked with the reclosing function;
* counting of the number of operations performed for each function;
* counting of the cumulative switched currents for each pole of the circuit breaker;
* storing the values of input quantities corresponding to the eight last operation and trace memory, triggered when trip occours, with pre and post-trigger;
* blocking circuit for accelerated protection schemes;
* continuous monitoring of internal circuits;
* real time clock with memory backup;
* serial communication circuit RS485 with MODBUS RTU protocol. |
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SSG
50-51-67-50N-51N-59N-67N
Feeder directional/non directional phase and earth overcurrent digital relay
DESCRIPTION
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.
The relay features the following characteristics:
* directional and not directional functions for both overcurrent and earth fault protections;
* phase lock loop circuit with memory of the reference voltage for the directional functions (67);
* protection functions and final relays fully programmable;
* selectable operation curves with independent or dependent time both for the overcurrent and for the earth fault functions;
* direct read-out of all the input quantities by means of digital display on the front panel;
* counting of the number of operations performed for each function;
* counting of the cumulative switched currents for each pole of the circuit breaker;
* storing the values of input quantities corresponding to the eight last operation and trace memory, triggered when trip occours, with pre and post-trigger;
* blocking circuit, to perform accelerated protection schemes;
* optional digital input circuits;
* continuous monitoring of internal circuits;
* real time clock with memory backup;
* serial communication circuit RS485 with MODBUS RTU protocol. |
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SIG 50-51-50N-51N Phase and earth overcurrent digital relay
DESCRIPTION
The relay type SIG is intended for the protection of electric lines and machines against overloads, short circuits and earth faults.
The relay SIG features the following principal characteristics:
* three input measuring circuits for the line currents;
* measuring circuit, provided with a band pass filter, for the residual current;
* protection functions and final relays completely programmable by the user;
* selectable operation curves with independent or dependent time as well for the overcurrent as for the earth fault function;
* direct read-out of all the input quantities ;
* counting of the number of operations performed for each function;
* counting of the cumulative switched currents for each pole of the circuit breaker;
* storing the values of input quantities corresponding to the eight last operations (START or TRIP) and trace memory with pre and post-trigger (2.5 + 2.5s);
* two different setting configuration;
* blocking circuit, to perform accelerated protection schemes;
* digital input circuits;
* serial communication circuit RS485 with MODBUS® RTU protocol;
* trip circuit supervision (TCS);
* breaker failure protection (BF);
* programmable disablement on lighting with programmable time setting;
* real time clock with memory backup;
* continuous monitoring of internal circuits. |
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SCF 25 Microprocessor-based synchronizing relay
DESCRIPTION
The relay type SCF is intended for synchronizing of generator units and paralleling to the network.
Several functions, which are necessary to carry out the paralleling, are accomodated in a single relay. The design is based on a microprocessor to assure a high degree of adaptivity and ease of use.
The relay SCF features the following principal characteristics:
* possibility to control both frequency and voltage of the interested machine;
* setting of the operative parameters by means of the membrane front keyboard;
* direct read-out of all the measured quantities and operative parameters by means of digital display on the front panel;
* high effectiveness and hence fast operation, due to digital processing of the input quantities;
* serial communication circuit;
* high reliability, assured by suitable checking actions and continuous monitoring of internal circuits;
* possibility to use a single relay as well for installations with several generators. |
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SVR 27-59-59N-27P-47-27T-59T
Microprocessor-based relay for voltage protection
DESCRIPTION
The relay type SVR is intended for the protection of electric lines and machines against voltage variations. The following protection and monitoring functions are available, all with independent time delay:
undervoltage protection (27),
overvoltage protection (59),
residual voltage protection (59N) against earth faults (available upon request),
positive sequence undervoltage protection (27P),
negative sequence overvoltage protection (47),
dead line monitoring (27T),
live line monitoring (59T).
The relay SVR features the following principal characteristics:
* three-phase measuring circuit for the line voltage, with star or delta connection;
* measuring circuit, provided with a band pass filter, for the residual voltage;
* protection functions and final relays completely programmable by the user;
* direct read-out of all the input quantities by means of digital display on the front panel;
* counting the number of operations for each function;
* storing the values of input quantities corresponding to the last operation;
* optional digital input circuit, to perform adaptive protection schemes;
* serial communication circuit;
* continuous monitoring of internal circuits.
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