T R I P & L O C K - O U T R E L AY Introduction Output contacts The DCL represents a new generation of high speed electro-mechanical tripping relays for power utility protection and control applications. Application of the DCL multi-contact high-speed trip relays ensures fast operation of less than 8 ms with minimal contact bounce. 8 N/O make (M) contacts plus 4 N/C break (B) contacts Alternative contact arrangements from 2M+10B to 10M+2B can be specied according the coding table. Protective functions 86 Lock-out Application Construction The effect of a fault on a power system is dependent on the speed with which the fault can be detected and isolated. Modern protection schemes incorporate ever increasing functionality through the application of digital techniques to protection relay technology. The requirement for highly reliable tripping and control relay elements does however remain and often constitutes a signicant cost and space requirement when considering protection panel designs. The DCL system fulls this need by providing a compact, exible and high performance solution, while at the same time reducing the cost and lead times normally associated with this class of device. A wide voltage operating range and user selectable low or high burden tripping relay operation reduces the number of model variations. The DCL relay contacts can be specied to reset in a number of ways: Self reset contacts All contacts operate when a voltage in the specied range is applied to the relay coil and reset when this voltage is removed. Latching contacts - Hand reset • Hand Reset All contacts operate and mechanically latch when a voltage in the specied range is applied to the relay coil and reset when the reset button located on the front of the relay is pressed. • Electrical and Hand Reset All contacts operate and mechanically latch when a voltage in the specied range is applied to the relay coil and reset when the reset button located on the front of the relay is pressed. A voltage applied to the reset coil may also be used to reset the contacts. • Electrical Reset All contacts operate and mechanically latch when a voltage in the specied range is applied to the relay coil and reset when a voltage applied to the reset coil. The DCL range is packaged in a draw out case system and can be either ush panel or rack mounted; it represents a new generation of electro-mechanical relays designed specically for application where high performance and reliability is paramount. While the fundamental and proven electro-mechanical mechanism has been maintained, the implementation of modern manufacturing techniques combined with an innovative architecture has provided a very exible and competitive alternative to older generation auxiliary relays. The outer case is manufactured from zinc coated mild steel providing considerable strength and long term durability. The entire case surface is powder coated to provide corrosion protection and an attractive textured nish. Relay elements are mounted on fabricated berglass and acetal components to provide reliable electrical isolation and simple cost effective construction. DCL - Flyer - 08 - 2011

Low burden setting Front panel layout The low burden conguration is suitable for applications where immunity to capacitance discharge and high minimum operation currents are not required. Suitable for MV applications where the DC battery supply capacity is limited. High speed trip High burden setting In this conguration the relay is suitable for application in high security circuit breaker tripping circuits and in particular where the initiating contact may be remote from the relay. The high burden can also be used to facilitate the satisfactory operation of external series elements provided...

Reference standards Between all terminals and earth Between independent circuits Reference standards Between all terminals and earth Between independent circuits Across normally open contacts □ High frequency disturbance Reference standards IEC60255-22-1 CLASS III Between all terminaIs of the same circuit 1.0 kV peak Between independent circuits 2.5 kV peak Between independent circuits and earth 2.5 kV peak Applied directly to operate inputs Applied directly to all inputs Climate tests Reference standards Temperature range IEC60068-2-1/2 Reference standards Humidity IEC60068-2-78 Mechanical tests...

Contact configuration Case earth Case earth 1 2 1 3 4 3 5 6 5 6 7 8 7 8 9 10 9 10 11 12 11 12 13 14 13 16 15 18 17 20 19 20 22 21 22 24 23 24 26 25 26 28 27 17 Operate Refer note 1 19 21 23 25 27 Reset* Case terminations for five outputs versions (REAR VIEW) Refer note 2 15 Reset * 2 4 14 16 18 Operate 28 Case terminations for twelve outputs versions (REAR VIEW) * Electric reset onlyfitted where specified Note 1: Refer contact configuration code & wiring: table 1 Note 2: Refer contact configuration code & wiring: table 2 Table 1: five outputs versions Contact conguration Five outputs Case Terminal...

□ Connection diagram example - standard configuration with twelve contact version (8 normally open contact + 4 normally closed contacts) PROTECTION RELAY

□ Connection diagram example - standard configuration with five contact version (4 normally open +1 normally closed contacts) PROTECTION RELAY

DIMENSIONS FRONT VIEW REAR VIEWS 51 1 27 Screw lug 4 mm wire 2.5 mm2 max 2 28 177 Indicative position Front view Terminal layout FLUSH MOUNTING CUTOUT SIDE VIEW 157 15 max 48 25 min 217 13 168 159 27 13 FLUSH MOUNTING N.2 holes RACK MOUNTING 482.6 13.0 typ 4U P re-drilled holes to suit M4 self threading screws 168.0 37.6 4 slot 10.5 x 7 DCL - Flyer - 08 - 2011 7

www.thytronic.it A PERSONALISED SERVICE OF THE PRODUCTION, A RAPID DELIVERY, A COMPETITIVE PRICE AND AN ATTENTIVE EVALUATION OF OUR CUSTOMERS NEEDS, HAVE ALL CONTRIBUTED IN MAKING US ONE OF THE BEST AND MOST RELIABLE PRODUCERS OF PROTECTIVE RELAYS. FORTY YEARS OF EXPERIENCE HAS MADE STANDARD THESE ADVANTAGES THAT ARE GREATLY APPRECIATED BY LARGE COMPANIES THAT DEAL ON THE INTERNATIONAL MARKET. A HIGHLY QUALIFIED AND MOTIVATED STAFF PERMITS US TO OFFER AN AVANT-GARDE PRODUCT AND SERVICE WHICH MEET ALL SAFETY AND CONTINUITY DEMANDS, VITAL IN THE GENERATION OF ELECTRIC POWER. OUR COMPANY PHILOSOPHY...