reyrolle XR152 & XR153 SIEMENS Fact Sheet Supply supervision Relays

XR152 & XR153 Fact Sheet Supply supervision Relays Features ï Low burden ï Versatile design, can provide pre-close supervision ï Consistent positive action Application Types XR152 and XR153 relays are designed to comply with CEGB and other specification for protection supervision requirements and the monitoring of d.c. voltage supplies. These applications require relays with low operating current, visual indication and the ability to initiate a remote alarm. Both these relays have mechanical flag indicators which show on de-energisation, self reset on the XR152 and hand reset on the XR153. Description Type XR relays are developments for specific applications of the type AR relay range. They are electro-mechanical relays with long service life and complying with the appropriate requirements of IEC 255 and BS 142. These relays have a low operating current, specific settings and time delayed drop-off. This latter feature is to keep the relay in the operated condition during temporary reductions in the battery voltage, such as those which occur just prior to a fuse blowing or during a busbar fault when many trip relays operate simultaneously. Healthy circuits therefore do not give spurious alarms and the relay effected by the fuse failure provides the alarm and indication necessary for accurate maintenance attention. Technical specification Rated voltage V n 24V, 30V, 50V, 60V, 125V and 220Vdc Settings Pick-up 70% of rated voltage Drop-off not less than 26% of Vn Reset time No less than 100ms when supply is switched from 100% to 26% of Vn. Operating current 10mA nominal. ( 17mA for 24V & 30V ratings) Burden 0.4W at 24Vd.c. 1.25W at 125Vd.c Thermal withstand 1.15 Vn continuously Indication A flag indicator shows when the relay is de-energised XR152 self reset flag XR153 hand reset flag Contact arrangements 2 normally open and 2 normally closed or4 normally open or4 normally closed Contact rating Make and carry continuously: 1250VAa.c. or 1250Wd.c.with limits of 660V and 5A Make and carry for 3 seconds: 7500VAa.c. or 7500Wd.c with limits of 660V and 30A XR152 & XR153 Fact Sheet Supply supervision Relays Break: 1250VAa.c. or 100Wd.c. resistive, or 50W inductive ( L/ R = 0.04) d.c. with limits of 250V and 5A Environmental Temperature IEC 68-2-1 & 2 Storage -25º C to + 70º C Operating -10º C to + 55º C Humidity IEC 68-2-3 56 days at 95% RH and 40º C Vibration IEC 255-21-1 The relays meet the requirements of Class 1 for vibration response and endurance Shock and bump IEC 255-21-2 The relays meet the requirements of IEC 255-21-2 and BS142, sub-section 1.5.2. ( 1989) with respect to shock and bump testing for class 1 severity Mechanical life The relays will withstand in excess of 10, 000 operations with the contact rating at a rate of 600 operations per hour Insulation IEC 255-5 Relays will withstand: 5kV peak, 1.2/ 50µ s, 0.5J between all terminals and case earth and between adjacent terminals. 2kV rms 50Hz for 1 minute between all case terminals connected together and the case earth and between independent circuits. 1kV rms 50Hz for 1 minute between normally open contacts. Cases Modular size 3 or Vedette sizes 2/ 3V or 1V Ordering information Model, rated voltage( s) , contact arrangement, case style and size Qualifications Siemens Protection Devices Limited operates a quality system accredited to ISO9001. XR152 & XR153 READY STOCK....! ! * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ...............