High-Speed DC Circuit-Breaker for Fixed Installation Type UR26, UR36 & UR40

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1 High-Speed DC Circuit-Breaker for Fixed Installation Type UR26, UR36 & UR40 C O M P O N E N T S

2 The UR26, UR36 & UR40 are DC high-speed current limiting air Circuit-Breakers, trip free, single pole, bi-directional, with electromagnetic blow-out, electric control circuits and series direct instantaneous over-current release. Their simple design and high insulation level combined with their compliance to both standards EN50123/IEC61992 for Fixed Installations and EN/IEC60077 for Rolling Stock (more severe for what concerns the mechanical endurance and the vibrations & shocks), guarantee to the UR26, UR36 & UR40 range a very high reliability and an exceptionally long life time. With its proven worldwide experience and acceptance, Sécheron's range of Circuit-Breakers offers you the key product for such a strategic and critical application that is to guarantee the highest safety to your equipment as well as to the people operating it and using it. Applications Line Circuit-Breaker type* H/L/B/O for DC traction power substations Interconnecting Circuit-Breaker type* H/I/B/O for DC traction power substations Rectifier Circuit-Breaker type* H/R,lr,r/B/O for DC traction power substation Rolling mill plants, chemical plants, nuclear research centers, mines * Type designation according to standards EN / IEC Main features Conventional thermal current 2600 A (UR26), 3600 A (UR36) and 4000 A (UR40) Rated voltage 900 Vdc, 1800 Vdc and 3600 Vdc Rated insulation voltage up to 4800 Vdc for a rated voltage of 3600 Vdc Safe with a high insulation level: over-voltage category OV4 Limited maximum arc voltage High rated short-circuit making and breaking capacity Electro-magnetic closing with electric holding or magnetic latch Five double contacts auxiliary switches Low voltage 22-poles connector interface for auxiliary contacts and control coil High mechanical and electrical endurance Very low maintenance requirements Proven design with worldwide experience and acceptance Insulation material according to relevant BS, NF, ASTM, IEC and DIN standards Designed according to EN /2, IEC /2 A large number of different options to match the various applications requirements Technical diagrams 2 Track line supplied by a rectifier f e d d: duty d - distant fault e: duty e - maximum energy f: duty f - maximum fault current Breaking current parameters Îss>1.42Iss I Iss 0.63 Iss Icut off Id V Ûarc UNe t c t l di/dt Typical duty f Typical duty e and d t t Characteristics of the duties d, e and f t c /T Nc d > T Nc [ms] I Ne /I Nss e f I ss /I Nss I ss = Prospective sustained short-circuit current Î ss = Peak of I ss I Nss = Rated short-circuit current of the circuit-breaker I d = Setting of maximum current release I cut off = Cut off current Û arc = Maximum arc voltage U Ne = Rated operational voltage di/dt = Initial current rate of rise t c = Time-constant of the circuit t l = Opening time T Nc = Rated track time constant of the circuit-breaker

3 Opening time t l t l Relationship between opening time t l and the initial rate of rise of current di/dt for direct instantaneous over-current release. Example for an initial rate of rise of current of A/s: the opening time is about 3.5 ms for UR26 and about 4.7 ms for UR36 and UR40. Remark: for a shorter opening time the indirect release option can be used (refer to option section). Designation code (standard version) Type designation URS A E DS A UR Breaker type - Execution UR - Fixed installation URS Conventional thermal current 2600 A A A 40 Rated voltage 900 Vdc Vdc Vdc 64 Arc chute execution Standard for 81/82 arc chute A Standard type SE (1) for 64 arc chute B Closing device type Electric holding E Magnetic holding M Nominal control voltage 24 Vdc Vdc Vdc Vdc Vdc Vdc 220 Varistor on coil No 0 Direct over-current instantaneous release (2) ka (3) DV ka DS ka (4) DS2 Pre-set over-current setting x 10 (A) Example: 310 x 10 = 3100 A Indirect release No 0 Auxiliary contact configuration 5a (NO) + 5b (NC) A Manual tripping No 0 Manual closing device No 0 Position Indicator No 0 Overcurrent release indicator No 0 (1) Includes only the arc chute locking mechanism but no arc chute lifting lever and no additional insulating panels around the arc chute. (2) DV type has a single trip setting range with the setting from underneath; DS type has a double trip setting range with the setting from underneath. (3) Only for UR26. (4) Only for UR36 & UR40.

4 Technical data Symbol Unit UR26 UR36 UR40 MAIN CIRCUIT Conventional free air thermal current (T amb =+40 C) I th [A] - acc to EN / IEC acc. to ANSI C acc. to IEC Rated service current I Ne [A] Rated voltage U Ne [Vdc] - arc chute type arc chute type arc chute type Rated insulation voltage: - arc chute type 81 U Nm [Vdc] arc chute type arc chute type Rated impulse withstand voltage: - arc chute type 81 U Ni [kvdc] arc chute type arc chute type Rated short-circuit making & breaking capacity I NSS / T Nc: - at U Ne 900 Vdc [ka]/[ms] 125/ / /100 - at U Ne 1800 Vdc [ka]/[ms] 80/ / / at U Ne 3600 Vdc [ka]/[ms] 40/ / /31.5 Direct over-current instantaneous release [ka] [ka] Power frequency withstand voltage (50 Hz, 1 min) : - arc chute type 81 U a [kv] arc chute type arc chute type CONTROL CIRCUIT Nominal voltage U n [Vdc] 24, 36, 48, 72, 96, 110, 220 Nominal closing power (T amb =+20 C) [W]/[s] 1300/1 Nominal holding power for electric holding (T amb =+20 C) [W] 2.3 Nominal holding power for magnetic holding (T amb =+20 C) [W] 0 Nominal opening power for magnetic holding (T amb =+20 C) [W]/[s] 25/1 Mechanical opening time* at U n and T amb =+20 C t o [ms] 15 to 30 Mechanical closing time* at U n and T amb =+20 C t c [ms] ~ 150 * starting when the signal is received by the coil AUXILIARY CONTACTS CIRCUIT Number of contacts 5a (NO)+5b (NC) Rated voltage (potential free contacts) [Vdc] 24 to 110 Rated current [A] 10 Maximum breaking current - Ohmic load at 110 Vdc [A] 1 - Inductive load τ = 15 ms at 110 Vdc [A] 0.3 Minimum let through current at 24 Vdc (1) [ma] 10 (1) For a dry and clean environment OPERATING CONDITIONS Ambient temperature T amb [ C] -25 to +40 Minimum mechanical durability N Operations 8x25000 Altitude [m] <1400 Humidity Class 5K2 Pollution degree PD4

5 Main dimensions and weight (standard version) Circuit-breakers dimensions [mm] UR26 UR36 UR40 A B C D E Circuit-breakers weight [kg] UR26 UR36 UR40 with arc chute type with arc chute type with arc chute type UR..81/UR (82) 419 (81) x Ø UR ,

6 Insulating distances Minimum insulating distances [mm] (1) UR..81 UR..82 UR..64SE To insulating wall A B C (2) To earth C (2) (1) At maximum short-circuit breaking capacity. For smaller short-circuit values, smaller distances can be used (2) Grid with 50% of surface opening Insulated grid 617 (82) C 419 (81) UR..81/UR..82 B B A A C UR..64 B B A A

Options designation code (subject to additional costs) Type designation URS 36 64 C E 064 1 DV2 310 1 B 1 1 1 0 Description Designation Code Arc chute execution type S-CC for arc chute 64 C type S-OC

0 ka DV2 4.0-10.0 ka DV3 2.0-5.0 ka DE1 4.0-8.0 ka DE2 6.0-10.0 ka DE3 9.0-15.

Yes 1 Over-current release indicator Yes 1 BIM5 & BIM6 indirect and manual releases DE direct over-current instantaneous release M3 manual release The indirect release enables to shorten the opening

7 Options designation code (subject to additional costs) Type designation URS C E DV B Description Designation Code Arc chute execution type S-CC for arc chute 64 C type S-OC for arc chute 64 D type SI-CC for arc chute 64 E type SI-OC for arc chute 64 F Nominal control voltage 64 Vdc Vdc 125 Varistor on coil Yes 1 Direct over-current instantaneous release ka DV ka DV ka DE ka DE ka DE ka DE4 Indirect release (including manual ralease) BIM 5 1 BIM 6 2 Auxiliary contact wiring 22 poles (5 change-over switches) B Manual release Yes 1 Manual closing device Yes 1 Position Indicator Yes 1 Over-current release indicator Yes 1 BIM5 & BIM6 indirect and manual releases DE direct over-current instantaneous release M3 manual release The indirect release enables to shorten the opening time when required by specific application. The choice of the relevant type has to be validated by Sécheron prior quoting. This device can also be manually activated. Mechanical reaction time Control mode - BIM ms CID-1* - BIM ms Direct battery Vdc * Not included in the DC circuit-breaker - To be ordered separately Not available for 220 Vdc The DE type has a single trip range with a lateral setting.

Varistor on coil Position indicator Manual closing Over current release indicator Over current release indicator and manual closing device cannot be selected together

S-CC type: arc chute lifting lever located on LV connector s side.

SI-CC type: with additional insulating panels and the arc chute lifting lever located on LV connector s side.

secheron.com This document is not contractual and contains information corresponding to the level of technology at the date of printing.

8 Varistor on coil Position indicator Manual closing Over current release indicator Over current release indicator and manual closing device cannot be selected together for the same breaker. Arc chute 64 S execution S-OC type: arc chute lifting lever located on LV connector s opposite side. S-CC type: arc chute lifting lever located on LV connector s side. Arc chute 64 SI execution SI-OC type: with additional insulating panels and the arc chute lifting lever located on LV connector s opposite side. SI-CC type: with additional insulating panels and the arc chute lifting lever located on LV connector s side. SG101778BEN_A03-1/06 Sécheron SA Route des Moulières Meyrin - Geneva CH-Switzerland Tel: +41 (0) Fax: +41 (0) info@secheron.com This document is not contractual and contains information corresponding to the level of technology at the date of printing. Sécheron reserves the right to modify and/or improve the product, whose characteristics are described in these documents, as required by new technology at any time. It is the purchaser's responsibility to inform himself, no matter what the circumstances, of the product's maintenance conditions and requirements. Sécheron reserves all rights, especially those arising from our "General Delivery Conditions". Printed in Switzerland

High-Speed DC Circuit-Breakers for Fixed Installation Type UR26, UR36, UR40 & UR46

High-Speed DC Circuit-Breakers for Fixed Installation Type UR26, UR36, UR40 & UR46 O M P O N E N T S High-Speed D ircuit-reakers for Fixed Installation Type UR26, UR36, UR40 & UR46 The UR26, UR36, UR40 & UR46 are D high-speed current limiting air ircuit-reakers, trip free, single pole,