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| THE EL.CO. STANDARD PRODUCTION OF THE SOLID STATE RELAYS IS DIVIDED INTO THREE MAIN GROUPS | |||||||||||||||
| 1)Zero-crossing relays The zero crossing relays pick-up when the output voltage is near to zero and always drop-out at zero-current. They are particularly suitable for the commutation of the resistive and capacitive loads. 2)Instant commutation relays 3)D.C. commutation relays |
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RECOMMENDED APPLICATIONS
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The solid-state relays can particularly be used where a high commutation frequency is required together with the possibility of commutating, by means of limited control voltage (3 V-3 mA), high currents (90 A-480 V) with 4 KV insulation between input-output. They are extremely resistant to vibrations or oxidation as well as to mechanical impacts and do not cause arcs nor fluctuations.
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| GENERAL FEATURES | |||||||||||||||
| All the solid state relays are provided with a snubber filter, which protects them from any undesirable spikes caused by an excessive speed of increase of the output voltage. However, in certain applications, it has been found that the device is still not protected, as a result of the elevated voltage spikes which may sometimes be present in industrial environments. In such cases a variator must be applied to the device, in paralled at the output, so as to protect the device from the above said spikes. To protect the devices from overcurrents, it is recommended that a fast-reacting fuse be installed for each phase, rather than a normal fuse which would only intervene once the devise has already been damaged. | |||||||||||||||
| ADVANTAGES | |||||||||||||||
| • Low power supply • Commutation zero crossing or istantaneous • Life duration/reliability • Reduced reponse time • No mechanical part in movement (No recoil) • No mechanical wear • Compatibility with digital circuit • Schock resistance • Noiseless working • Artight seal |
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| LIMITATIONS | |||||||||||||||
| • Drooping (from 1 to 1,5 V) • Only A.C. or only D.C. exit • Dissipator's frequent obligation • Utilization with small signals • Resistance to transient voltage • Runaway current |
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| INSTALLATION | |||||||||||||||
| To ensure optimal performance from all the solid state relays, it is necessary to place them in well ventilated environments which will ensure that the devices have a good dissipation. Furthermore, during the installation, it is important to avoid arranging the relays in rows which are one upon another, this could jeopardise the good dissipation of the relays. | |||||||||||||||
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| • PIN TO PIN with electromechanical relays for printed circuits • Not polarized input • Led to control the input tension • Low control current • High reliability • High input-output insulation • High switching frequency |
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| • 15A to 90A single-phase power units • 30A and 50A single-phase power supply units with analogue power check • 30A and 50A two-phase power units • 10A and 20A three-phase power units • 15A three-phase power units for motor control • 10A power units for motor operation reversal • 15A and 25A torque limiters for motor start and Soft Starter, with adjustment of ascending and descending slopes and start-up torque • Input voltage LEDs • IP20 protection degree • DIN guide attachment • Unlimited life • High switching frequency • In compliance with EC Directives • CSA-UL certify |
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| • Non-stabilized power supply units • Linear stabilized power supply units • Linear stabilized power supply units with transformer for direct connection to 110Vac/230 Vac/400Vac voltage • Stabilized switching power supply units • Stabilized switching power supply units with transformer for direct connection to 110Vac/230 Vac/400Vac voltage • Single-phase stabilized mains switching power supply units for direct connection to 110Vac/230 Vac/400Vac voltage • Three-phase stabilized mains switching power supply units for direct connection to 400Vac voltage • IP20 protection level • In compliance with EC Directives |
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| • Interface modules for static relays with in-line pins, combinable from 1 to 16 • Modular interfaces for pin-to-pin static relays with electromechanical relays • Modular interfaces for electromechanical relays, one 10A changeover contact • Modular interfaces for electromechanical relays, one 10A changeover contact, with flat connector • Modular interfaces for electromechanical relays, one 10A changeover contact, with test buttons • Modular interfaces for electromechanical relays, two 5A changeover contacts, with flat connector • Interface modules with four and eight 8A relays with IP20 protection, 22,5 mm wide • Single-relays interface module with heel piece, 1 changeover contact, 6,2 mm wide |
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