RESIDUAL CURRENT CIRCUIT BREAKERS OFE (6 ka)

Transcription

1 Residual current circuit breakers MINIA RESIDUAL CURRENT CIRCUIT BREAKERS OFE ( ka) They react to sine-wave residual current (type AC) For protection: against dangerous contact with live parts (I Δn 30 ma) against dangerous contact with dead parts against fire or short circuit in reduced insulation capacity of electrical equipment (I Δn 300 ma) Possibility of additional mounting of auxiliary switches PS-OF-00 on the right side of the device Surge current resistance up to ka (8/20 μs) Possibility of interconnection with circuit breakers LPE (LPN) by means of interconnecting busbars 000 Residual current circuit breakers 2-pole Standard type for common use in building and housing installations up to 0 A, 230 V a.c. I Δn I n Type Product Number Weight Package [ma] [A] code of modules [kg] [pcs] 0 OFE--2-00AC OFE AC OFE AC OFE AC OFE AC OFE AC OFE AC Residual current circuit breakers -pole Standard type for common use in building and housing installations up to 80 A, 230/00 V a.c. I Δn I n Type Product Number Weight Package [ma] [A] code of modules [kg] [pcs] 2 OFE AC OFE AC OFE AC OFE AC OFE-2--00AC OFE-0--00AC OFE-3--00AC OFE AC OFE AC OFE AC OFE AC OFE-0--00AC OFE-3--00AC Accessories to OFE Auxiliary switch PS-OF-00 page C Busbar G2L-000-, GL-000- page D Connecting adapters AS-2-G, AS-2-S page D9 C8

2 Residual current circuit breakers MINIA RESIDUAL CURRENT CIRCUIT BREAKERS OFE ( ka) Specification Type OFE OFE Standards EN 008, IEC 7 EN 008, IEC 7 Approval marks Number of poles 2 Type AC AC Rated current I n, 2, 0 A 2, 0, 3, 80 A Rated residual current I Δn 0, 30, 00, 300 ma 30, 00, 300, 00 ma Rated operating voltage U e 230 V a.c. 230/00 V a.c. Min. operating voltag ) U min 00 V a.c. 00 V a.c. Max. operating voltage U max 20 V a.c. 20/ V a.c. Rated frequency f n 0/0 Hz 0/0 Hz Conditional short-circuit current I nc ka ka Maximum backup fuse 3 A gg 00 A gg Maximum backup circuit breaker LPE, LPN, LST I n of the circuit breaker I n of the residual current circuit breaker I n of the circuit breaker I n of the residual current circuit breaker Rated making and breaking capacity I m 00 A 800 A Surge resistance (8/20 μs) ka ka Release delay - - Mechanical endurance >0 000 operating cycles >0 000 operating cycles Electrical endurance >0 000 operating cycles >0 000 operating cycles Degree of protection IP20 IP20 Connection Conductor mm 2. 2 mm 2 Torque 3 Nm 3 Nm Opposite yes yes Operating conditions Ambient temperature - C - C Working position arbitrary arbitrary Seismic immunity 3 g / 8 0 Hz 3 g / 8 0 Hz ) For preserving the function of the test push-button Dimensions OFE OFE C9

3 Residual current circuit breakers MINIA RESIDUAL CURRENT CIRCUIT BREAKERS OFE ( ka) Diagram OFE OFE N 3 N 2 N 2 N Connection Residual -pólový current proudový circuit breaker chránič-pole v in -fázových -phase circuits obvodech with s N-pólem N-pole Residual -pólový current proudový circuit breaker chránič-pole v in 3-fázových 3-phase circuits obvodech without bez N-pólu N-pole L N L L2 L3 3 N 3 N 2 N OFE N OFE C0

4 AUXILIARY SWITCHES Residual current circuit breakers MINIA Auxiliary switch for residual current circuit breakers with overcurrent protection Accessories to OLFI and OLFE For signalling the position of contacts of residual current Installation: : on the right side of the residual current circuit breakers with overload protection circuit breaker with overload protection Type Product Arrangement Number Weight Package code of contacts ) of modules [kg] [pcs] PS-OLF ) Each digit indicates successively the number of make, break and break-make contacts Auxiliary switch for residual current circuit breakers Accessories to OFI and OFE Installation: on the right side of the residual current circuit breaker For signalling the position of contacts of residual current circuit breakers Accessories to Type Product Arrangement Number Weight Package code of contacts ) of modules [kg] [pcs] OFI, OFE up to 80 A PS-OF OFI 00, 2 A PS-OF ) Each digit indicates successively the number of make and break contacts Specification Type PS-OLF-000 PS-OF-00 PS-OF2-00 Standards EN 209 EN EN 209 EN 209 EN Approval marks Arrangement of contacts ) 00 Rated operating U e /I e AC V a.c. / A 230 V a.c. / A voltage / current AC- 230 V a.c. / A 230 V a.c. / 3, A - DC V d.c. / 0, A, 220 V d.c. / A 220 V d.c. / 0, A 2 V d.c. / A Min. voltage / current 2 V a.c. / 0 ma 2 V a.c. / 0 ma 2 V a.c. / 0 ma Short-circuit protection 2) MCB A, char. B or C MCB A, char. B or C 2) MCB A, char. B or C 2) fuse A gg fuse A gg fuse A gg Electrical endurance operating cycles operating cycles operating cycles Degree of protection IP20 IP20 IP20 Mounting on the right side of the device on the right side of the device on the right side of the device Connection Conductor - rigid (solid, stranded) 2. mm 2, 2x. mm mm mm 2 Conductor - flexible mm mm mm 2 Torque 0. Nm 0.8 Nm 0.8 Nm Opposite yes yes yes Operating conditions Ambient temperature -2 C 0 C -2 C C -2 C C Working position arbitrary arbitrary arbitrary ) Each digit indicates successively the number of make, break and break-make contacts 2) MCB - Miniature Circuit Breaker C

5 Residual current circuit breakers MINIA AUXILIARY SWITCHES Dimensions PS-OLF PS-OF PS-OF Diagram PS-OLF-000 PS-OF-00 PS-OF C

6 Residual current circuit breakers MINIA BASIC TERMS AND SYMBOLS Rated residual operating current I Δn is the value of residual current I Δn specified by the manufacturer, at which the residual current circuit breaker must switch out under specified conditions. Alternating residual current must by cut off by the residual current circuit breaker within (0. ) I Δn Rated current I n is the value of current specified by the manufacturer, which can be transferred by the residual current circuit breaker continuously. So the current I n can pass through the contacts for an unlimited time. Therefore it is, for instance, possible to use a residual current circuit breaker with I n =2 A in the circuit with max. current up to 2 A. For protection against overload of the residual current circuit breakers OFI, OFE, it is recommended to use the circuit breakers LSN, LST, LSE with rated current I n MCB I n RCCB Rated operating voltage U e is the voltage the residual current circuit breaker is to be connected to and which properties are related to. The connected voltage has no effect on the device function but on the function of the test circuit and isolation properties. Rated frequency f n is the frequency the residual current circuit breaker is designed for and at which it works correctly under stated conditions. Majority of residual current circuit breakers are designed for f n = 0 to 0 Hz. As the residual current circuit breaker function is based on the induction principle, the residual current behaviour and frequency show an effect upon tripping. When using a device designed for 0/0 Hz in a network with a different frequency, the user must count on a change of the tripping threshold i.e. a change of I Δn Conditional short-circuit current I nc short-circuit strength. The function and design principle does not allow to use the residual current circuit breaker for protection against short circuit. For circuit protection it is necessary to use a circuit breaker or a fuse. These elements cut the short-circuited circuit safely off. The residual current circuit breaker must only withstand the through-going short-circuit current. The amplitude of the maximum through current is defined as rated conditional short-circuit current I nc. The short-circuit strength is then expressed by the current I nc. For example, on the rating plate I nc = 0 ka is expressed by the following symbol: Ambient temperature T for the residual current circuit breakers is (- +0) C according to almost all international standards. Some residual current circuit breakers work in an extended range (-2 +0) C. This possibility is identified by the following symbol on the rating plate: Residual current circuit breaker type AC reacts to sine-wave residual current it is used in conventional AC networks Residual current circuit breaker type A reacts to sine-wave alternating and pulsating direct residual currents - it is used in conventional AC networks and the networks with phase power regulation etc. Residual current circuit breaker type G special residual current circuit breaker reducing the number of undesirable cut-offs. It is mainly installed before the devices causing short-time (up to 0 ms) stray currents. Identification: G Surge resistance: 3 ka (8/20 μs) Release delay: 0 ms G Residual current circuit breaker type S special residual current circuit breaker, which is mainly intended for selective switching of residual current circuit breakers and reduction of undesirable cut-offs. It is installed before the devices causing short-time (up to 0 ms) stray currents. Identification: S Surge resistance: ka (8/20 μs) Release delay: 0 ms S Selective (discriminating) switching means that if the residual current circuit breakers are connected in series, only the device in which circuit a failure occurs will cut off the current. More specifically, only the device in which the tripping residual current appears due to a failure in the protected circuit will turn off the current. The advantage consists in maintaining the power supply in the other circuits not affected by the failure. Such function of the protected circuit is achieved by connection of the selective residual current circuit breaker (see Fig. ) before the standard or G type residual current circuit breaker, with the following ratio of rated residual current: I Δn S 3 x I Δn -,G I ΔnS Rated residual operating current of the selective residual current circuit breaker I Δn -,G Rated residual operating current of standard or G type residual current circuit breaker The main reason of selective disconnecting of circuits is higher time delay of the selective residual current circuit breakers in tripping (compared to standard or G type ones). load I ΔnS = 0.3 A I Δn- = 0. A I = 0.03 A ΔnG load Fig. : Simplifi ed example of selective connection of residual current circuit breakers Residual current circuit breaker with overcurrent protection - the device is a combination of residual current circuit breaker and circuit breaker with 2-module width - it saves the space in the switchboard compared to conventional connection of two separate devices (3 modules). This eliminates the problem of primary protection and interconnection. The disadvantage of such a design compared to conventional one is that it is not possible to identify whether the tripping was actuated by the residual current circuit breaker or by the circuit breaker. C7

7 INTERCONNECTING BUSBARS Interconnecting busbars For interconnection of to -pole circuit breakers, tumbler switches, residual current circuit breakers, lightning current arresters and surge voltage arresters For interconnection of a series of single-phase or threephase circuit breakers and tumbler switches, on which an auxiliary switch is mounted switch fork pin Busbars GL-.., G2L-.., G3L-.., GL-.. with forks into the head part of the terminal, Busbars SL-.., S2L-.., S3L-.., SL-.. with pins into the clamp part of the terminal Busbar Number Output Number Cross-section Type Product End cap Weight Package shape of poles spacing [mm] of outlets [mm 2 ] 2 0 GL ) GL ) GL GL GL GL ) GL EKC GL ) 37 2 GL x 28 G2L EKC x 2 0 G3L ) G3L ) G3L x G3L G3L x G3L ) x 9 0 G3L-000-0C 373 EKC G3L-000-C 3739 EKC x G3L EKC x GL EKC x G3L+N EKC SL ) SL EKC SL EKC SL EKC SL x 28 S2L EKC x 9 S3L EKC S3L EKC x 2 2 S3L EKC x 9 2 SL EKC ) The busbar is manufactured as enclosed one 2) For single-pole devices with auxiliary switch Accessories End caps For covering the ends of connecting busbars Type Product Description Weight Package EKC for -pole rails cross-section 0, 2, mm EKC for 2-pole rails and for 3-pole rails cross-section mm EKC for 3-pole rails cross-section 0 mm EKC for 3-pole rails and for -pole rails cross-section 2 mm EKC for -pole rails cross-section mm Power supply unit It enables power supply of interconnecting busbars by conductors of cross section up to 3 mm 2 The blocks can be assembled in series to create a multipole connection unit. Degree of protection IP20 Type Product Weight Package ES-3-GS D

8 INTERCONNECTING BUSBARS Specification Type G.., S.. Rated operating voltage U e V a.c. Max. operating voltage U max 00 V a.c. Loading current 3 80 A Cross-section 0 2 mm 2 Short-circuit strength with primary fuse 20 A gg 0 ka Overvoltage category III Busbar material E-Cu-F2 Insulation material PC/ABS-Blend Max. loading current per phase Rail cross-section 0 mm 2 2 mm 2 mm 2 20 mm 2 2 mm 2 2 mm 2 Power supply from the rail edge 3 A A 80 A 90 A 00 A 00 A Power supply from the rail centre ) 00 A 0 A 30 A 0 A 70 A 80 A ) Max. loading current in one direction must not be higher than max. loading current at power supply from the rail edge Diagram GL-.., SL-.. G2L-.., S2L-.. G3L-.., S3L-.. GL-.., SL-.. G3L+N-.. L L L2 (N) L L2 L3 L L2 L3 N L N L2 N L3 N D

9 INTERCONNECTING BUSBARS Dimensions GL-30-0, GL-0-0, GL-20-0 GL x 7 2. G-L--000/2 972 x G2L x (GL-30-0) 0 (GL-0-0) 20 (GL-20-0) 99.8 x GL-30-, GL-0-, GL-20- GL (GL-30-) 0 (GL-0-) 20 (GL-20-) 7 G3L-0-0, G3L-0-0, G3L-20-0 G3L-000-0C x 9 G3L-0-, G3L-0-, G3L-20- G-3L-000/C x (G3L-0-0) 0 (G3L-0-0) 20 (G3L-20-0) 0 (G3L-0-) 0 (G3L-0-) 20 (G3L-20-) G3L x 2.8. GL-000-, G3L+N x D

10 INTERCONNECTING BUSBARS Dimensions SL-20- SL x x SL-000- x SL x SL S2L-000- x x S3L-000- S3L x x S3L SL x x ES-3-GS D7

11 INTERCONNECTING BUSBARS Examples of use of interconnecting busbars INTERCONNECTING BUSBARS WITH FORKS -pole interconnecting busbars For interconnection of -pole devices in the head part of the terminal Use: LPE, LPN, SJB, SVL, SVM, APN -pole interconnecting busbars with spacing mm For interconnection of -pole devices with auxiliary switch in the head part of the terminal Use: LPE, LPN, APN 2-pole interconnecting busbars For interconnection of 2-pole devices in the head part of the terminal Use: LSN, LSE, SVL, SJL, ASN 3-pole interconnecting busbars For interconnection of 3-pole devices in the head part of the terminal Use: LPE, LPN, SJB, SVL, SVM, APN 3-pole interconnecting busbars with a gap on the auxiliary switch For interconnection of 3-pole devices with auxiliary switch in the head part of the terminal Use: LPE, LPN, APN -pole interconnecting busbars For interconnection of -pole devices in the head part of the terminal Use: LPE, LPN, OFI, OFE, APN INTERCONNECTING BUSBARS WITH PINS -pole interconnecting busbars For interconnection of -pole devices in clamp part of the terminal Use: LPE, LPN, SJB, SVL, SVM, APN -pole interconnecting busbars with spacing mm For interconnection of -pole circuit breakers LST in clamp part of the terminal or for interconnection of -pole devices with auxiliary switch in clamp part of the terminal Use: LPE, LPN, LST, APN, AST 2-pole interconnecting busbars For interconnection of 2-pole devices in clamp part of the terminal Use: LPE, LPN, OLFE, OLFI, OFE, OFI, APN 3-pole interconnecting busbars For interconnection of 3-pole devices in clamp part of the terminal Use: LPE, LPN, APN 3-pole interconnecting busbars with spacing mm For interconnection of 3-pole circuit breakers LST in clamp part of the terminal or for interconnection of -pole devices with auxiliary switch in clamp part of the terminal Use: LPE, LPN, LST, APN, AST -pole interconnecting busbars with spacing mm For interconnection of -pole circuit breakers LST in clamp part of the terminal Use: LST, AST D8

12 CONNECTING ADAPTERS Connecting adapter up to 2 mm 2 with fork For connection of another conductor to the head part of the terminal of a circuit breaker, residual current circuit breaker, tumbler power switch etc. For example, the best solution is to connect a conductor for power supply of an electric meter in the clamp part of the circuit breaker terminal, and another conductor through the connecting adapter AS-2-G in the head part of the circuit breaker terminal Conductor cross-section: 2 mm 2 Type Product Accessories Weight Package AS-2-G LPE, LPN, OLFI, OLFE, OFI, OFE, SJB, SVM, APN Connecting adapter up to 2 mm 2 with pin Accessories to: OFI20, OFE20, SVL, SJL, RP Conductor cross-section: 2 mm 2 For connection of conductors to the clamp part of the terminal Type Product Accessories Weight Package AS-2-S OFI , OFE , RLP Connecting adapter up to 0 mm 2 For connection of Al or Cu conductors Cross-section of Cu conductors: 2. 0 mm 2 Cross-section of Al conductors: 0 mm 2 Type Product Accessories Weight Package AS-0-S-AL 3739 LPE, LPN, LST, SJBplus, APN, AST 0.08 Connecting adapters up to 9 mm 2 For connection of Cu/Al conductors of cross section 3 9 mm 2 With direct or outbowed terminal Type Product Accessories Weight Package CS-FH000-3NP9 370 straight guidon the package contains the set of 3 pieces LST, SJBplus, SJB-NPE, AST 0.7 CS-FH000-NP9 378 straight guidon LST, SJBplus, SJB-NPE, AST 0.0 CS-FH000-3NV9 372 outbowed guidon the package contains the set of 3 pieces LST, SJBplus, SJB-NPE, AST 0.8 Connecting adapter 3x0 mm 2 For connection of 3 conductors / device pole of cross section 0 mm 2 Type Product Accessories Weight Package N3x0-FH000 LST, SJB, SVM, AST 0.03 D9

13 CONNECTING ADAPTERS Dimensions AS-2-G 7 AS-2-S AS-0-S-AL N3x0-FH CS-FH NP9 2 CS-FH000-3NV Examples of use of connecting adapters and blocks AS-2-G For connection of another conductor of cross section up to 2 mm 2 to the head part of the terminal Use: LPE, LPN, OLFI, OLFE, OFI, OFE, SJB, SVM, APN AS-2-S For connection of conductors of cross section up to 2 mm 2 to the clamp part of the terminal Use: OFI , OFE , RLP AS-0-S-AL For connection of Cu/Al conductors of cross section up to 0 mm 2 to the clamp part of the terminal Use: LSN, LST, LSE, LFI, LFE, SJBplus, ASN, AST CS-FH000-3NP9, CS-FH000-NP9, CS-FH000-3NV9 For connection of Cu/Al conductors of cross section up to 9 mm 2 to the clamp part of the terminal Use: LST, SJBplus, SJB-NPE, AST N3x0-FH000 For connection of three conductors of cross section 0 mm 2 to the clamp part of one terminal Use: LST, SJB, SVM, AST D70