RVA
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RVA MOTOR START POTENTIAL RELAY PATENT PENDING RVA potential relay is designed to start single-phase motors which employ both start and run capacitor (CSR and CSIR configurations) for high starting torque. The most frequent applications include air conditioning, commercial refrigeration, heat pump, etc. The coil is energised by the potential of the start winding. When such voltage is raised up to the pickup value, the contact will open and disconnect the start capacitor. The relay will remain energised until the start winding voltage is removed or decreases to less than the drop-out value. DESIGN DATA Coils: Class "B” (130°C) insulation. Contact rating: One Normally Close contact RVA standard contact rating: 16A (break and make), 400V, cos^ 0.85, 500,000 operations 35A break, 10A make, 400V, cos^ 0.85, 200,000 operations RVAH high capacity contact rating: 50A break, 15A make, 400V, cos^ 0.85, 100,000 operations Operation: See table for operating characteristics (dependent to mounting position) Specify operating position For Normal pollution conditions (according to EN60730) Approved for use with flammable gas, according to EN60079-15:2005 Terminals: Quick-Connect 6.3 x 0.8 mm or screw M3.5 (see table) CODE EXPLANATION Basic model High capacity version Coil type Operating Characteristics (Pick-up and Drop-out) Operating position Terminal configuration

OPERATING CHARACTERISTICS AT 50Hz h.p.u. = Approximate Pick-up at 90°C P.U. and D.O. values at 25°C

TAB MOUNT PANEL MOUNT DRAWINGS (All dimensions in millimetre +0.25) TAB MOUNT (quick-connect terminal) TAB MOUNT (screw terminal) PANEL MOUNT (quick-connect terminal) WIRING DIAGRAM When engaging the plastic mould recess, use two flat head, self tapping screw, size 4.2mm, 9.5mm long (UNI-EN-ISO 1481 for slotted screws, UNI-EN-ISO 7049 for screws with a cross recess). For any different configuration, contact the Factory Electrica s.r.l. - via privata Della Torre, 24 - 20127 Milano - Italia Tel. +39 02 2892641 Fax +39 02 2827511 www.electrica.it info@electrica.it