Trip circuit supervision relay - ABB

1 trip circuit supervision relayType TCS2 ABBABB a global technology leaderAdvantage ABB 120 years of technology and innovation Unparalleled domain competence Global experience Complete solution capabilities Large installed base Environment-friendly technologiesABB is a global leader in Power and Automationtechnologies that enable utility and industrycustomers to improve performance while loweringenvironmental impact. The ABB Group of companiesoperates in around 100 countries and employs over1,03,000 India, ABB serves customers with the completerange of power and automation technologies.

2 Thecompany has a vast installed base, extensivemanufacturing facilities and a countrywide marketingand service a part of its Power Technologies offering, ABBserves electric, gas and water utilities as well asindustrial and commercial customers with a wide rangeof products, systems and services for powergeneration, transmission and distribution. ABB ssystem offering ranges from Electrical Balance of Plant(EBOP) for power plants, bulk power transmission,turnkey substations and complete electrification toutility automation and power product offering covers a wide spectrum oftechnologies across the entire voltage rangeincluding indoor and outdoor circuit breakers, air andgas insulated switchgear, disconnectors, capacitorbanks, reactive power compensators, powertransformers, distribution transformers, instrumenttransformers, Compact Secondary Substations(CSS) and Ring Main Units (RMU).

3 ABB3 DescriptionThe supervision relay TCS is designed for thesupervision of trip circuits and other importantcontrol and monitoring circuits. Block diagram of therelay is shown in Fig. 1. The supervision function isbased on a low-level (~ 3 mA) current injectionprinciple. The injected current is sensed by twoopto-couplers. The supervision function in threesteady states of circuit breaker- trip circuit can beseen from , 3 and 4 (page 5). In normalcondition, the indicator LED glows green and outputrelays are in picked-up condition. In the event of afault, if the measuring current drops below theoperating value of the relay ( - mA) orcompletely stops flowing.

4 The supervision relayoperates (drops-off) after a delay of sec and theindicator LED turns red. The supervision relay , for itsfunctioning requires an auxiliary voltage (AC or DC) ofrated value to be connected to the terminals a and b . This voltage can be the same as that of thesupervised circuit or it could be a separate sourcewith the same magnitude (AC or DC). Should a faultoccur in the auxiliary voltage supply, the LED doesnot glow and the output relay drops off. Relays withdiffering rated voltage for supervision circuit andauxiliary supply can be supplied as a special Continuous supervision of complete tripcircuit independent of the circuit breakerposition Detects faults in the supervised circuits,such as loss of voltage, circuit breakage,contact degeneration in connections andresistance increase in wires, contacts andcoils Low-level measuring current enablesapplication in sensitive or high resistancecircuits Operation delay to avoid spurious signals,for instance.

5 On circuit breaker operations Operation indication by a single dual - colourLED Complete range of rated voltages either ACor DC Galvanic isolation is possible betweenauxiliary source and supervised circuit Very low burden on the auxiliary sourceApplicationIn a protection system the trip circuit ofthe circuit breaker is crucial. If aninterruption occurs in the trip circuit apossible network fault will not bedisconnected and would have to becleared by another protectionupstream in the power system. Thesupervision function is particularlyimportant when there is only onetripping coil and CB tripping is instance, for generator circuitbreakers or any other importantcircuit breaker in distributionnetworks.

6 The supervision relay typeTCS is intended for a continuoussupervision of circuit breaker tripcircuit and to give an alarm for loss ofauxiliary supply, faults on the trip -coilor its wires independent of thebreaker position, faults on the breakerauxiliary contacts and faults in thesupervision relay circuit supervision relay type TCSFig. 1. Block diagram of TCS dataEnergizing quantities, rated values and limitsRated voltage of supervised andauxiliary circuit UAux24,30, 48,110-125, 220-250,V AC or DCOperative voltage range80-110% of rated UAuxPermitted ambient temperature range00 C to +550 CPick-up & Drop-off - mAat rated voltage UAux& 250 COperate (Drop-off) - rated voltage UAux & 250 CBurden at rated voltage243048110125220250 Auxiliary circuit (W) 2 supervision circuit (W)

7 Durability1 Million switching operationsTerminalsSuitable for 2 x mm2 wiresWeight1 KgContact dataContact configuration (self reset)1 N/O +1 N/C + 2C/OMax voltage within a contact system250 V DC / ACRated current5 AMake and carry for s10 AMake and carry for s8 ABreaking capacity for DC with circuit1 L/R < 40 ms,at 48/110/220 VDCE lectrical endurance10,000 operations, at 110 V DC, resistive,Tested according to IEC 255-23360 op/hrFig. 2. supervision in pre-close conditionFig. 3. supervision in post-close conditionFig. 4. supervision with latched trip relay4 ABBE lectrical testsTemperature-rise;Enclosure, pcb relays,tested acc.

8 To IEC 255-6heat dissipating componentsInsulation resistance;>100 M Ohm at 500 V DCtested acc. to IEC 255-5 Dielectric; Tested acc. to IEC kV, 50 Hz, 1 minImpulse; Tested acc. to IEC 255-55 kV, s, MHz burst disturbanceClass IIItest acc. to IEC 255-22-1 common kV, 1 MHz, 400 pls/s differential mode1 kV, 1 MHz, 400 pls/sElectro-static discharge test IIIto IEC 255-22-2 contact discharge6 kV, 150 pF/330 ohm air discharge8 kV, 150 pF/330 ohmFast transient disturbance testClass IVacc. to IEC 255-22-4 common mode4 kV, 5/50 ns, 5kHz, Rs = 50 ohmSurge immunity test IIIto IEC 255-22-5 common mode2 kV, s, Rs = 10 ohm differential mode1 kV, s, Rs = 2 ohmOrdering detailsRelay typeContactRated voltage (AC/DC)Article noTCS1N/O+1N/C+2C/O241 MYN569697-A301 MYN569697-B481 MYN569697-C110-1251 MYN569697-E220-2501 MYN569697-GEnvironmental testsVibration response and enduranceClass I, acc.

9 To IEC 255-21-1 Shock response and enduranceClass I, 11 msTested acc. to IEC 255-21-2 Dry heat; test acc. to IEC 68-22-2+550 C /+700 CDry cold; test acc. to IEC 68-2-1-100 C / -250 CDamp heat (cyclic - 12+12 Hr)12 Hr/550 C + 12 Hr/250 C x 6 days at 95% RHTest acc. to IEC 68-2-30 ABB5 Connection diagram and Contact configurationDimensionsABB LimitedDistribution AutomationManeja,Vadodara 390 013, : +91 265 2604384/5/6+91 265 2604397 Fax: +91 265 2638922E-mail: Marketing Offices:NBCC Tower4th FloorNo. 15, Bhikaji Cama PlaceNew Delhi 110 066 Tel: +91 11 26186000 Fax: +91 11 26197592/840354th FloorNo.

10 9 Elgin RoadKolkata 700 020 Tel: +91 33 22832906/8 Fax: +91 33 22832990 ABB HouseDr. S B PathBallard EstateMumbai 400 038 Tel: +91 22 56318231 39 Fax: +91 22 56318276/77 Embassy Star, 1st FloorNo. 8, Palace RoadVasanth NagarBangalore 560 052 Tel: +91 80 22949779 Fax: +91 80 22949808 Century PlazaNo. 3C, 3D & 3F, 3rd Floor561 / 562, Anna SalaiTeynampet (Mount Road)Chennai 600 018 Tel: +91 44 24340201 Fax: +91 44 24340282 Vandana House1st FloorG E Road, RamkundRaipur 492 001 Tel: +91 771 5060816-8 Fax: +91 771 Aa: Terminals, Db: Mounting hole, Ls: Operation signal, Ob: Mounting screwDimensions in mmTCS/12/2005/01-1500 Contact position is shown for un-energized stat