Medium Voltage Products SHS2 Gas-insulated switching and isolating apparatus
Index 2 1. Description 7 2. Operating mechanisms 9 3. Accessories 14 4. Type available 20 5. Overall dimensions 22 6. Fuses 24 7. Electrical diagrams 34 8. Switchgear applications 1
1. Description General The SHS2 switching and isolating apparatus consist of gasinsulated switch-disconnectors and isolators, suitable for use in medium voltage metal-enclosed switchgear. They are used in secondary distribution substations for supplying lines, power transformers and ring networks. Technical characteristics The SHS2 switch-disconnectors and isolators are made up of a stainless steel cylindrical housing, a set of three top insulators and a set of three bottom insulators made of epoxy resin, and a front operating mechanism. The blade contacts for isolation, breaking, closing and earthing are arranged inside the cylinder in SF6 gas at a pressure of 125 kpa absolute. The unit is the sealed for life type complying with the IEC 60694 Standards. It is therefore free from any problems of gas tightness. A gas exhaust valve is located in the rear part of the cylinder for any over-pressure. The contacts can take up three positions: CLOSED - OPEN - EARTHED. The position of the contacts can be verified from the front of the operating mechanism by means of a reliable indication, in compliance with IEC 62265-1 and CEI 17-4 and with the IEC 62271-102 and CEI EN 60129 Standards. The three top insulators act as a support for the fixed contacts and allow fixing of the main busbars. The three bottom insulators act as a support for the moving contacts and allow connection of the cables or of the busbars. 2 4 2 2 2 1 3 5 6 1 Moving contact operating shaft 2 Top insulator 3 Upper fixed contact 4 Gas exhaust valve 5 Stainless steel housing 6 Operating mechanism 7 Bottom insulator 8 Moving contact 9 Earth contact 7 9 8 7 7 7 2
Closed Open Earthed The stainless steel housing provides a metal earthed segregation between the busbar compartment and the feeder compartment of the unit the apparatus is installed in. This characteristic ensures maximum personnel safety during any intervention in the feeder compartment, such as replacement of one or more fuses or cable maintenance, even with the main busbars energised. Furthermore, the metal segregation provided by the housing considerably reduces the possibility of a short-circuit between the phases and between the upper and lower contacts of the same phase due to leakage currents. 3
1. Description Compliance with Standards IEC 60694 CEI EN 60694 Common requirements for high voltage switching and control apparatus. Isolator IEC 62271-102 CEI 17.4 Isolators and earthing switches with alternating current and voltage higher than 1000 V. Switch-disconnector IEC 60694 CEI EN 60694 Common requirements for high voltage switching and control apparatus. IEC 60265-1 CEI 17-9/1 Control circuit-breakers and switch-disconnectors for high voltage. Part 1: Control circuit-breakers and switchdisconnectors for rated voltages higher than 1 kv and lower than 52 kv. Electrical characteristics Rated voltage Rated Normal Current (40 C) Frequency Rated making capacity on short-circuit Without external earthing switch With external earthing switch ( 1 ) Rated short time withstand current - 1s ( 1 ) Rated breaking capacity Mainly resistive load service No-load transformer service kv A Hz kap kap ka A A Switch-disconnector combined with fuses IEC 62271-105 CEI EN 60420 Switch-disconnectors combined with high voltage fuses for alternating current. The fuses must comply with DIN Standards. IEC 60694 CEI EN 60694 Common requirements for high voltage switching and control apparatus. IEC 60282.1 CEI EN 60282.1 Fuses with voltage higher than 1000 V. Part 1: current-limiting fuses. No-load line service No-load cable service Ring circuit service Operating Mechanism Test parameters for making capacity, breaking capacity and making capacity under short circuit - rms (IEC 60265-1) Electrical life Transfer current secondo IEC 62271-105 Maximum overtemperature test under normal load C Mechanical life Atmospheric impulse withstand voltage Phase-Phase towards earth A A A A kvp Between open contacts kvp Withstand voltage at industrial frequency Degrees of protection Stainless steel enclosure Operating mechanism IP65 IP3X Phase-Phase towards earth Between open contacts ( 1 ) For different values contact ABB. ( 2 ) Up to 16 ka for V1 operating mechanism. kvrms/1 min kvrms/1 min 4
Switch-disconnector Isolator Earthing switch Feeder IEC 60265-1 IEC 62271-102 IEC 62271-102 Earthing Switch Earthing Switch Unit without fuses Unit with fuses Feeder Unit without fuses Unit with fuses (SHS2 ES) 24 - - 24 - - - 400-630 - - 400-630 - - - 50/60 - - 50/60 - - - 31.5-40-50-62.5 31.5-40-50-62.5 N.O. - - N.O. N.O. - - 2.5 - - 2.5 ka 62.5 ka 12.5-16- 20-25 12.5-16- 20-25 1 12.5-16- 20-25 ( 2 ) 12.5-16- 20-25 ( 2 ) 1 12.5-16-20-25 400-630 - - - - - - 4...16 - - - - - - 25 - - - - - - 50 - - - - - - 400 - - - - - - T1-T1M-T2-T2M T1-T1M-T2-T2M T2-T2M T3-V1 T3-V1 - T4 Test Duties 1-2-3-4-5-6-7 - - - - - - E3 E1 E1 - E1 E1 E1 N.O. N.O. Ask ABB N.O. N.O. N.O. N.O. IEC 60694 - - IEC 60694 - - - M1 M1 M1 (BIL 1.2/50 µs) (BIL 1.2/50 µs) (BIL 1,2/50 µs) 125 125 125 145 145 145 50 50 50 60 60 60 5
1. Description Quality System Complies with ISO 9001 Standards, certified by an independent organisation. Health and Safety Management System Complies with ISO 18001 Standards, certified by an independent organisation. Environmental Management System Complies with ISO 14001 Standards, certified by an independent organisation. Test Laboratory Complies with UNI CEI EN ISO/IEC 17025 Standards, accredited by an independent organisation. 6
2. Operating mechanism General The switch-disconnectors use T1-T1M and T2-T2M type operating mechanisms with separate operating seats for the isolation and earthing operations. The isolators use T3 and V1 type operating mechanisms with separate operating seats for the isolation and earthing operations and T4 with a single operating seat. With the T1-T2-T3-T4 operating mechanisms, the opening and closing operations are carried out manually locally by means of the operating lever provided. For the T2 operating mechanism it is also possible to carry out the opening operation remotely by means of a special shunt opening release. With the T1M and T2M motor operators, the closing and opening operations are carried out remotely. However, in case of emergency, they can also be carried out manually locally using the operating lever provided, or electrically by means of the special pushbuttons. The normal power supply voltages for the T1M and T2M motor operators are: 24 (*) - 48-110-220 V DC; 48-110 - 220 V AC 50-60 Hz. T1-T1M Operating mechanism with independent operation on exceeding dead centre This allows rapid manual or motorized closing and opening of the switch-disconnector with operating speed independent of the operator, obtained by using a single spring. Closing or opening takes place by charging the abovementioned spring (either manually of by means of a motor) until the dead centre is exceeded. It also carries out rapid manual closing of the earthing switch with operating speed independent of the operator. It is used in the SHS2/T1, SHS2/T1/N, SHS2/T1M and SHS2/ T1M/N type of switch-disconnectors. T2-T2M Operating mechanism with independent stored energy operation Allows rapid manual closing of the switch-disconnector with operation independent of the operator, obtained by means of a charged spring up to exceeding dead centre. (*) Only T1M 5 6 1 3 4 2 7 1 Switch-disconnector operating seat 2 Earthing switch operating seat 3 Interlocking lever between switch-disconnector and earthing switch 4 Mechanical position indicators of the mimic diagram 5 Voltage indicator lamps (on request) 6 Key locks on switch-disconnector operation (on request) 7 Key locks on earthing switch operation (on request) SHS2/T1M switch-disconnector operating mechanism. 7
2. Operating mechanism During the closing operation, a separate spring is charged automatically which stores the energy for opening. Switch-disconnector opening can be carried out by means of: the operating lever a shunt opening release (applied onto the operating mechanism itself) on request the release system, activated by the striker fuse in the case of even a single fuse blowing (only for SHS2/T2F - SHS2/T2F/N - SHS2/T2MF - SHS2/T2MF/N). It also carries out rapid manual closing of the earthing switch with operating speed independent of the operator. It is used in the SHS2/T2, SHS2/T2/N, SHS2/T2F, SHS2/ T2F/N type switch-disconnectors and in the corresponding SHS2/T2M - SHS2 T2M/N SHS2/T2MF - SHS2/T2MF/N motorized versions. With the T2M operating mechanism, the closing operation can be carried out from remote or by means of the operating lever. T3-V1 Operating mechanisms with dependent operation These allow manual closing of the isolator and earthing switch with operation speed dependent on the operator. Closing and opening are obtained by working on the operating lever. The lever can only be removed after completion of the operation. The T3 type operating mechanism is used in the SHS2/I, SHS2/I/N, SHS2/IF and SHS2/IB type isolators. The type V1 operating mechanism is used in the SHS2/A type isolator. T4 Operating mechanisms with independent operation These allow manual closing of the earthing switch with operating speed independent of the operator. The opening and closing operations are carried out locally manually by means of an operating lever provided. The lever can only be removed after completion of the operation. The type T4 operating mechanism is used in the SHS2/ES type earthing switch. 1 Isolator and earthing switch operating seat 1 2 4 5 3 2 Key locks on isolator and earthing switch operation (on request) 3 Key locks on earthing switch operation (on request) 4 Key interlock between isolator and circuit-breaker 5 Mechanical position indicators of the mimic diagram 6 Voltage indicator lamps (on request) 6 SHS2/IB isolator operating mechanism (type T3). 8
3. Accessories Optional accessories Operating mechanism Type of isolator Switch-disconnector-isolator key locks Earthing switch key locks Shunt opening release Microswitch for indication of fuse blown Auxiliary contacts Door lock Bus-side voltage indicator lamps Cable-side voltage indicator lamps Insulator crosspiece with or without capacitive dividers Spaced earthing switch Fuse adapters Retrofit Kit T1 T2 T1-T3-V1 T4 C Assembly by the customer. ABB Assembly by ABB. Accessory always supplied. Not available. SHS2/T1 C C C C C C C C SHS2/T1/N C C C C C C C C SHS2/T1M C C C C C C C C SHS2/T1M/N C C C C C C C C SHS2/T2F C C C ABB C C C C C C SHS2/T2F/N C C C ABB C C C C C C SHS2/T2 C C C C C C C C C SHS2/T2/N C C C C C C C C C SHS2/IF C C C C C C C C SHS2/I C C C C C C C C SHS2/I/N C C C C C C C C SHS2/IB C C C C C C C C C SHS2/A C C C C C C C C C SHS2/ES C C C C C C C SHS2/T2M C C C C C C C C C SHS2/T2M/N C C C C C C C C C SHS2/T2MF C C C ABB C C C C C C SHS2/T2MF/N C C C ABB C C C C C C 9
3. Accessories 1 Key locks 2 Auxiliary contacts These allow the apparatus to be locked in the closed or open position. It is possible to combine a maximum of four key locks for T1, T2 and T3 operating mechanisms, and a maximum of two key locks for T4 operating mechanisms. If key locks are not requested, a pre-assembled extension is supplied which allows the use of padlocks to lock the operations. These signal the position of the apparatus state. These signal the position of the apparatus state. It is possible to combine a maximum of two closing or opening contacts for each position (closed/open/earthed). SHS2 - T1, T2, T3 and V1 operating mechanism (*): Line-side isolator operation 1 free key IMS open 1 free key IMS closed 1 free key IMS open + 1 free key IMS closed 2 free keys IMS open 2 free keys IMS closed Earthing switch operation 1 free key ST open 1 free key ST closed 1 free key ST open + free key ST closed 2 free keys ST open 2 free keys ST closed SHS2/ES - (T4 operating mechanism) 1 free key earthing switch open 1 free key earthing switch open + 1 free key earthing switch closed 1 free key earthing switch closed 2 free keys earthing switches closed 2 free keys earthing switches open IMS Switch-disconnector. ST Earthing switch. (*) A key interlock, with the key free with the line-side isolator closed, is always supplied as a compulsory application. 3 Shunt opening release (only T2-T2M operating mechanism) This is an electromechanical device which, following energisation of an electromagnet, activates the release lever of the operating mechanism making the switch-disconnector open. Power supply voltages: 24-48-110-220 V DC 24-48-110-220 V AC. 50-60 Hz. 10
4 Voltage indicator lamps 6 Door lock These can be supplied with one or two sets of three lamps integrated in the operating mechanism casing. The device is prepared for verification of concordance of the phase with fibre optics. It can be combined with the crosspiece with capacitive insulators. This is a mechanical device which does not allow the unit door to be opened with the earthing switch open. 5 Crosspiece with insulators 7 Earthing switch This can be supplied to complete the switchgear in the versions with pole insulators or, alternatively, with pole capacitive insulators. Should voltage indicator lamps be requested on the cable side, it is necessary to install a crosspiece with capacitive insulators. The crosspiece is always present in the versions fitted with fuses. This is fitted with: transmission; interlock; auxiliary contacts: two closing or opening contacts. The spaced earthing switch is standard for: SHS2/T2F, SHS2/ T2MF, SHS2/T2MF/N, SHS2/IF, SHS2/ES. In the SHS2/IB isolator, the earthing switch with making capacity (62.5 kap) is available. 11
3. Accessories 8 Contact signalling fuse blown 10 Field diffusers When a fuse blows, special kinematics activate a signalling contact. The kit includes three field diffusers to be applied to the end of the busbars in correspondence with the switchgear closure sheet. The kit is optional and assembly is by the customer. The kit must be used, for insulation reasons, in 375 mm units (should the switchgear manufacturer not provide alternative solutions). This solution is already used in ABB UniMix switchgear and application of the kit requires a busbar cross-section similar to that of the UniMix switchgear. 9 Adapters for fuses DIN e The kit includes all the accessories needed to adapt and mount three fuses according to DIN Standards with dimension e less than 442 mm. Different adapters are available for 292 mm and 192 mm fuses. 12
11 Retrofit Kit 13 Two-level pressure switch The kit includes the lateral supports to be assembled on the stainless steel structure to allow fixing in panels built for SHS2 switch-disconnectors and isolators of the first series. With regard to the auxiliary electrical connections, it is necessary to carry out the panel retrofit according to the electric circuit diagrams, available on request. The device allows the internal pressure of the SHS2 switchdisconnector to be monitored. There are two contacts in the device which allow the operating pressure (contact 1) and the minimum pressure below which operation is not guaranteed (contact 2). 12 Gas topping up valve The SHS2 switch-disconnector is sealed and has a life of 30 years. In the case of extraordinary maintenance, topping up of the SF6 gas is done through the front valve. 13
4. Types Available Switch-disconnectors SHS2/T1, SHS2/T1/N: three-position switch-disconnector with manual operating mechanism on exceeding dead centre. It is normally used for incoming/outgoing units. (Fig. 1). SHS2/T2, SHS2/T2/N: three-position switch-disconnector with manual stored energy operating mechanism. It is normally used for incoming/outgoing units and can be fitted with a shunt opening release. (Fig. 1). SHS2/T2F, SHS2/T2F/N: three position switchdisconnector with manual stored energy operating mechanism, fuse-holder frame, release device for fuse blown, and earthing switch on the load side of the fuseholder frame. It is normally used to make transformer protection units and can be fitted with a shunt opening release (Fig. 2). SHS2/T1M, SHS2/T1M/N: three-position switchdisconnector with motor operator. It is normally used to make incoming/outgoing units (Fig. 1). SHS2/T2M, SHS2/T2M/N: switch-disconnector with three positions with stored energy motor operator. It is normally used to make incoming/outgoing units and can be fitted with a shunt opening release (Fig. 1). SHS2/T2MF, SHS2/T2MF/N: switch-disconnector with three positions with stored energy motor operator, fuseholder frame, release device for fuse blowing and earthing switch on the load side of the fuse-holder frame. It is normally used to make transformer protection units and can be fitted with a shunt opening release (Fig. 2). SHS2/T1 SHS2/T2 SHS2/T1/N SHS2/T2/N SHS2/T1M SHS2/T1M/N SHS2/T2M SHS2/ T2M/N Fig. 1 - UniMix P3 14
Isolators SHS2/I, SHS2/I/N: three-position line-side isolator with manual operating mechanism with dependent operation. It is normally used for incoming/outgoing units (Fig. 3). SHS2/IF: three-position line-side isolator with fuse-holder frame and earthing switch on the load side of the fuseholder frame, both with manual operating mechanism with dependent operation. It is normally used for measurement units (Fig. 4). SHS2/IB: three-position line-side isolator and spaced earthing switch, interlocked, with manual operating mechanism with dependent operation. It is normally used for incoming/outgoing units with fixed circuit-breakers (Fig. 5). The spaced earthing switch can be assembled to allow the use of fixed circuit-breakers with current sensors on board (standard version), or can be assembled for use of current transformers according to DIN Standards, installed in switchgear. SHS2/A: earthing switch upended with three positions and spaced earthing switch, interlocked with manual operating mechanism with dependent operation. It is normally used to make an incoming unit with fixed circuit-breaker (Fig. 6). Earthing switches SHS2/T2F SHS2/T2F/N SHS2/T2F SHS2/T2MF/N SHS2/I SHS2/I/N SHS2/ES: earthing switch with manual operating mechanism with independent operation. It is normally used for incoming/ outgoing units (Fig. 7). It has making capacity up to 62.5 kap. Fig. 2 - UniMix P2 Fig. 3 - UniMix ASR 15
4. Types Available SHS2/IF SHS2/IB HD4/UniMix-F VD4/UniMix-F SHS2/A Fig. 4 - UniMix M Fig. 5 - UniMix P1F Fig. 6 - UniMix P1A Fig. 7 - UniMix A 16
Type Dimensions U [kv] In [A] Icw [ka] Unit Width UniMix SHS2/T1 24.04.12 1vcd003305 24 400 12,5 500 P3 SHS2/T1 24.04.16 1vcd003305 24 400 16 500 P3 SHS2/T1 24.06.16 1vcd003305 24 630 16 500 P3 SHS2/T1 24.06.20 1vcd003305 24 630 20 500 P3 SHS2/T1 24.06.25 1vcd003305 24 630 25 500 P3 SHS2/T1/N 24.04.12 1vcd003307 24 400 12,5 375 P3 SHS2/T1/N 24.04.16 1vcd003307 24 400 16 375 P3 SHS2/T1/N 24.06.16 1vcd003307 24 630 16 375 P3 SHS2/T1/N 24.06.20 1vcd003307 24 630 20 375 P3 SHS2/T1/N 24.06.25 1vcd003307 24 630 25 375 P3 SHS2/T2 24.04.12 1vcd003309 24 400 12,5 500 P3 SHS2/T2 24.04.16 1vcd003309 24 400 16 500 P3 SHS2/T2 24.06.16 1vcd003309 24 630 16 500 P3 SHS2/T2 24.06.20 1vcd003309 24 630 20 500 P3 SHS2/T2 24.06.25 1vcd003309 24 630 25 500 P3 SHS2/T2/N 24.04.12 1vcd003311 24 400 12,5 375 P3 SHS2/T2/N 24.04.16 1vcd003311 24 400 16 375 P3 SHS2/T2/N 24.06.16 1vcd003311 24 630 16 375 P3 SHS2/T2/N 24.06.20 1vcd003311 24 630 20 375 P3 SHS2/T2/N 24.06.25 1vcd003311 24 630 25 375 P3 SHS2/T2F 24.04.12 1vcd003313 24 400 12,5 500 P2 SHS2/T2F 24.04.16 1vcd003313 24 400 16 500 P2 SHS2/T2F 24.06.16 1vcd003313 24 630 16 500 P2 SHS2/T2F 24.06.20 1vcd003313 24 630 20 500 P2 SHS2/T2F 24.06.25 1vcd003313 24 630 25 500 P2 SHS2/T2F/N 24.04.12 1vcd003315 24 400 12,5 375 P2 SHS2/T2F/N 24.04.16 1vcd003315 24 400 16 375 P2 SHS2/T2F/N 24.06.16 1vcd003315 24 630 16 375 P2 SHS2/T2F/N 24.06.20 1vcd003315 24 630 20 375 P2 SHS2/T2F/N 24.06.25 1vcd003315 24 630 25 375 P2 SHS2/T1M 24.04.12 1vcd003306 24 400 12,5 500 P3 SHS2/T1M 24.04.16 1vcd003306 24 400 16 500 P3 SHS2/T1M 24.06.16 1vcd003306 24 630 16 500 P3 SHS2/T1M 24.06.20 1vcd003306 24 630 20 500 P3 SHS2/T1M 24.06.25 1vcd003306 24 630 25 500 P3 SHS2/T1M/N 24.04.12 1vcd003308 24 400 12,5 375 P3 SHS2/T1M/N 24.04.16 1vcd003308 24 630 16 375 P3 SHS2/T1M/N 24.06.16 1vcd003308 24 630 16 375 P3 SHS2/T1M/N 24.06.20 1vcd003308 24 630 20 375 P3 SHS2/T1M/N 24.06.25 1vcd003308 24 630 25 375 P3 SHS2/I 24.04.12 1vcd003318 24 400 12,5 500 ASR SHS2/I 24.04.16 1vcd003318 24 400 16 500 ASR SHS2/I 24.06.16 1vcd003318 24 630 16 500 ASR SHS2/I 24.06.20 1vcd003318 24 630 20 500 ASR SHS2/I 24.06.25 1vcd003318 24 630 25 500 ASR SHS2/I/N 24.04.12 1vcd003319 24 400 12,5 500 ASR SHS2/I/N 24.04.16 1vcd003319 24 400 16 500 ASR SHS2/I/N 24.06.16 1vcd003319 24 630 16 500 ASR SHS2/I/N 24.06.20 1vcd003319 24 630 20 500 ASR SHS2/I/N 24.06.25 1vcd003319 24 630 25 500 ASR Unit UniMix 17
4. Types Available Type Dimensions U [kv] In [A] Icw [ka] Unit Width UniMix SHS2/IF 24.04.12 1vcd003317 24 400 12,5 500 M SHS2/IF 24.04.16 1vcd003317 24 400 16 500 M SHS2/IF 24.06.16 1vcd003317 24 630 16 500 M SHS2/IF 24.06.20 1vcd003317 24 630 20 500 M SHS2/IF 24.06.25 1vcd003317 24 630 25 500 M SHS2/T2M 24.04.12 1VCD003310 24 400 12,5 500 P3 SHS2/T2M 24.04.16 1VCD003310 24 400 16 500 P3 SHS2/T2M 24.06.16 1VCD003310 24 630 16 500 P3 SHS2/T2M 24.06.20 1VCD003310 24 630 20 500 P3 SHS2/T2M 24.06.25 1VCD003310 24 630 25 500 P3 SHS2/T2M/N 24.04.12 1VCD003312 24 400 12,5 375 P3 SHS2/T2M/N 24.04.16 1VCD003312 24 400 16 375 P3 SHS2/T2M/N 24.06.16 1VCD003312 24 630 16 375 P3 SHS2/T2M/N 24.06.20 1VCD003312 24 630 20 375 P3 SHS2/T2M/N 24.06.25 1VCD003312 24 630 25 375 P3 SHS2/T2M/F 24.04.12 1VCD003314 24 400 12,5 500 P3 SHS2/T2M/F 24.04.16 1VCD003314 24 400 16 500 P3 SHS2/T2M/F 24.06.16 1VCD003314 24 630 16 500 P3 SHS2/T2M/F 24.06.20 1VCD003314 24 630 20 500 P3 SHS2/T2M/F 24.06.25 1VCD003314 24 630 25 500 P3 SHS2/T2MF/N 24.04.12 1VCD003316 24 400 12,5 375 P2 SHS2/T2MF/N 24.04.16 1VCD003316 24 400 16 375 P2 SHS2/T2MF/N 24.06.16 1VCD003316 24 630 16 375 P2 SHS2/T2MF/N 24.06.20 1VCD003316 24 630 20 375 P2 SHS2/T2MF/N 24.06.25 1VCD003316 24 630 25 375 P2 SHS2/IB 24.04.12 1VCD003320 24 400 12,5 750 P1F SHS2/IB 24.04.16 1VCD003320 24 400 16 750 P1F SHS2/IB 24.06.16 1VCD003320 24 630 16 750 P1F SHS2/IB 24.06.20 1VCD003320 24 630 20 750 P1F SHS2/IB 24.06.25 1VCD003320 24 630 25 750 P1F SHS2/IB 24.04.12+kit 2CT 1VCD003320 24 400 12,5 750 P1F SHS2/IB 24.04.16+kit 2CT 1VCD003320 24 400 16 750 P1F SHS2/IB 24.06.16+kit 2CT 1VCD003320 24 630 16 750 P1F SHS2/IB 24.06.20+kit 2CT 1VCD003320 24 630 20 750 P1F SHS2/IB 24.06.25+kit 2CT 1VCD003320 24 630 25 750 P1F SHS2/IB 24.04.12+kit 3CT 1VCD003320 24 400 12,5 750 P1F SHS2/IB 24.04.16+kit 3CT 1VCD003320 24 400 16 750 P1F SHS2/IB 24.06.16+kit 3CT 1VCD003320 24 630 16 750 P1F SHS2/IB 24.06.20+kit 3CT 1VCD003320 24 630 20 750 P1F SHS2/IB 24.06.25+kit 3CT 1VCD003320 24 630 25 750 P1F SHS2/ES 24.12 1VCD003321 24 12,5 500 A SHS2/ES 24.16 1VCD003321 24 16 500 A SHS2/ES 24.20 1VCD003321 24 20 500 A SHS2/ES 24.25 1VCD003321 <24 25 500 A SHS2/A 24.04.12 1VCD003322 24 400 12,5 750 P1A SHS2/A 24.04.16 1VCD003322 24 400 16 750 P1A SHS2/A 24.06.16 1VCD003322 24 630 16 750 P1A Unit UniMix 18
Switch-disconnectors approved by Enel Can only be ordered together with a complete UniMix unit in the fixed configuration and with the accessories indicated below. Mix-L: three-position switch-disconnector with manual operating mechanism on exceeding dead centre, with operation independent of the operator. It is normally used to make 1L type units according to DY803/1 and DY 803/116. Mix-T: three-position switch-disconnector with manual stored energy operating mechanism, with operation independent of the operator, fuse-holder frame, release device for fuse blown, earthing switch on the load side of the fuse-holder frame. It is normally used to make 1T type units according to DY803/2 and DY 803/216. Mix-U: three-position switch-disconnector with manual operating mechanism on exceeding dead centre and spaced earthing switch, both with operation independent of the operator. It is normally used to make 1UT type units according to DY803/3 and DY 803/316. Mix-LM: three-position switch-disconnector with motor operator (24 V DC auxiliary voltage) on exceeding dead centre. It is normally used to make 1LE type units according to DY803/4 and DY 803/416. Type Standardised unit table U [kv] In [A] Icw [ka] Mix-L 24.04.12 DY 803/1 24 400 12,5 Mix-L 24.04.16 DY 803/116 24 400 16 Mix-T 24.04.12 DY 803/2 24 400 12,5 Mix-T 24.04.16 DY 803/216 24 400 16 Mix-U 24.04.12 DY 803/3 24 400 12,5 Mix-U 24.04.16 DY 803/316 24 400 16 Mix-Lm 24.04.12 DY 803/4 24 400 12,5 Mix-Lm 24.04.16 DY 803/416 24 400 16 IMS-ST IMS-ST1 IMS-ST1 ST2 ST2 MIX - L MIX - T MIX - U MIX - LM 19
5. Overall dimensions The SHS2 switch-disconnectors and isolators have been designed with a 230 mm pole centre distance. As an example, the figure shows the dimensions of the SHS2/T1 type of switch-disconnector. The overall dimensions of the different apparatus are available on request. For detailed information and other types of apparatus, please contact us. SHS2/.../N for units 375 mm wide 20
SHS2 for units 500 mm wide 21
6. Fuses Three fuses for transformer protection can be connected in series with the SHS2 switch-disconnector, with dimensional characteristics complying with DIN 43625 Standards. The fuse striker must have the force and run shown in the diagram. Selection of the fuse according to the voltage and power of the transformer must be made in conformity with the data indicated in the table. F (N) 60 50 40 30 20 10 F = Striker force. S = Striker run. 10 20 30 40 S (mm) Transformer protection and selection of fuses When the isolators are used to control and protect transformers, they are fitted with a particular type of currentlimiting fuses which guarantee selectivity with other protection devices and can take the high transformer connection currents without deteriorating. In this case, protection against overcurrents on the medium voltage side of the transformer is not indispensable since this task is carried out by the protection provided on the low voltage side. The protection on the medium voltage side can be entrusted just to the fuse, which must be selected taking into account the no-load connection current, which can take on values equal to or higher than 10 times the rated current according to the power of the transformer and to the type of laminations used (hot laminated or with orientated crystals). There is the maximum connection current when circuitbreaker closing takes place corresponding to the voltage passing through zero. A further result to be guaranteed is protection against faults in the low voltage winding and in the stretch of the connection from this to the circuit-breaker positioned on the secondary, avoiding the use of fuses with rated current which is too high, in order to ensure tripping within a short time even under these fault conditions. 22
A rapid check of the short-circuit current at the secondary terminals of the transformer and on the supply side of the circuit-breaker on the secondary - if placed at a significant distance, allows the trip time to be verified on the fuse blowing curve. The usage table given below takes both the required conditions into account, i.e. sufficiently high rated current to avoid untimely fuse blowing during the no-load connection stage and, in any case, of a value which guarantees protection of the machine against faults on the low voltage side. Table for selecting fuses for transformer protection (*) Un network (kv) Rated power of the transformer (kva) 25 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 Rated normal current of the fuse IN (A) 3 10 16 25 25 40 40 40 63 63 63 80 100 100 5 6 10 16 16 25 25 25 40 40 63 63 63 80 100 100 6 6 6 16 10 16 25 25 40 40 40 63 63 63 80 100 100 10 6 6 10 10 16 16 16 25 25 25 40 40 63 63 63 80 100 100 12 6 6 10 10 10 16 16 16 25 25 25 40 40 63 63 63 80 100 15 6 6 10 10 10 16 16 16 16 25 25 25 40 40 63 63 63 80 80 20 6 6 10 6 6 10 16 16 16 16 25 25 25 40 40 63 63 63 63 24 6 6 10 6 6 10 10 16 16 16 16 25 25 25 40 40 63 63 63 (*) ABB CEF type fuses. Increases in the rated normal current of the fuses must be foreseen in the case of transformer overload or in the case of ambient temperature higher than 40 C. 23
7. Electric circuit diagram SHS2/T1 electric circuit diagram Control circuit of the switch-disconnector (24 V DC) Control circuit of the switch-disconnector (48-110 V DC 110 V AC) Continues on page 25 24
SHS2/T1 electric circuit diagram Control circuit of the switch-disconnector (48-110 V DC 110 V AC) Control circuit of the switch-disconnector (220 V DC / V ac) Continues on page 26 25
7. Electric circuit diagram SHS2/T1 electric circuit diagram Control circuit of the switch-disconnector (220 V DC 220 V AC) Circuit of the shunt opening release (see note C) 26
SHS2/T2 electric circuit diagram Circuit of the closing motor Circuit of the shunt opening release 27
7. Electric circuit diagram SHS2/T1 - SHS2/T1M - SHS2/N-T1 - SHS2/N-T1M electric circuit diagram Control circuit of the switch-disconnector Switch-disconnector and earthing switch auxiliary contacts 28
Circuit for indication of voltage present busbars and line SHS2/T4 electric circuit diagram Auxiliary contacts of the earthing switch 29
7. Electric circuit diagram Auxiliary contacts of the isolator (see note C), for the SHS2/T1, SHS2/T2 and SHS2/T3 type isolators. Circuit for indicating voltage present on the line for the SHS2/T1, SHS2/T2, SHS2/T3 and SHS2/T4 isolators 30
Circuit for signalling voltage present on the earth for the SHS2/T1 and SHS2/T3 isolators Circuit for signalling fuse blown for the SHS2/T1 and SHS2/ T2 isolators 31
7. Electric circuit diagram Note: To take development of the product into account it is, in any case, always useful to refer to the electric circuit diagram provided with each circuit-breaker. State of operation shown The diagram is shown under the following conditions: switch-disconnector open earthing switch open circuits de-energised. Caption = Number of diagram figure * = See the note indicated by the letter A1 = Switch-disconnector operating mechanism applications A4 = Switchgear applications (indicative apparatus and connections for operating mechanism and signals) AK = Switch-disconnector auxiliary circuit diagram -B80/1 2 = Earthing switch position contact -B80/L = Position contact open during manual operation of earthing switch -Q80 -B80-90/1 2 = Position contact open during manual operation of earthing switch -Q80 and during manual operation of the switch-disconnector -B90/1 3 = Switch-disconnector position contacts -B90/C = Position contact open with switch-disconnector closed -B90/E = Contact activated by the key lock -B90/L = Position contact open during manual operation of switch-disconnector Q90 -B90/O = Position contact open with the switch-disconnector open -BE7 = Position contact open during manual operation of the earthing switch -BF = Contact signalling medium voltage fuse blown -BI1...4 = Position contact open with switch-disconnector closed -BI2...5 = Position contact open with switch-disconnector open -BI7 = Position contact open during manual operation of the switch-disconnector BI51...53 = Position contacts open with switch-disconnector BI411...412 = Position contacts of the switch-disconnector BI413 = Earthing switch position contacts BI421...422 = Line earth-open position contacts BI431...432 = Earthing switch-qe position contacts -BK = Contact activated by the key lock -BU1...3 = Capacitive dividers located on phases L1, L2, L3 of the line -BU1...6 = Capacitive dividers located on phases L1, L2, L3 -BU4...6 = Capacitive dividers located on phases L1, L2, L3 of the busbars -C1/L1...L3 = Capacitive dividers located on phases L1, L2, L3 of the line -C2/L1...L3 = Capacitive dividers located on phases L1, L2, L3 of the busbars -F1 -F3 = Medium voltage fuses -FF1 3 = Medium voltage fuses -KC = Auxiliary relay for closing the switch-disconnector -KO = Auxiliary relay for opening the switch-disconnector -KD = Auxiliary relay for with two contacts delayed at attraction and two instantaneous contacts -MI4 = Motor for operating the switch-disconnector -MM = Motor for operating the switch-disconnector -MO = Shunt opening release (see note C) -MS = Motor for operating the switch-disconnector -PGN = Lamp for signalling switch-disconnector open -PRD = Lamp for signalling switch-disconnector closed -PU1...2 = Voltage indicator located on phases L1, L2, L3 of the line/busbars -PUD1 -PUD2 = Voltage indicator located on the line = Voltage indicator located on the busbars -Q80 = Earthing switch -Q90 = Switch-disconnector -QE -QI4 -RR1 2 -S75F -SC -SO -SS -TR -TR1 2 = Earthing switch = Switch-disconnector = Suppressors of transients = Contact signalling medium voltage fuse blown = Pushbutton for local switch-disconnector closing = Pushbutton for local switch-disconnector opening = Local/remote selector = Converter = Rectifier -X = Interface connector with the feeder (outside the unit) -X1 -X3 -XB1 -XB2 XB91...94 -XB93 = Terminal boxes of the operating mechanism applications = Terminal boxes for the switch-disconnector auxiliary circuits = Terminal boxes for the circuits inside the switchdisconnector = Terminal boxes of the operating mechanism applications = Terminal boxes of operating mechanism application 32
Graphic symbols for electrical diagrams (IEC 60617 and CEI 3-14... 3-26 Standards) Delayed movement Three conductors Make contact Interruttore di manovra-sezionatore a doppia interruzione Mechanical interlock between two pieces of apparatus Connection of conductors Break contact Control coil (general symbol) Rotary handle operating mechanism Socket and plug (female and male) Closing position contact (limit switch) Control coil of a relay with delay on attraction Pushbutton operating mechanism U Resistor depending on the voltage, varistor Opening position contact (limit switch) Lamp (general symbol) Electric motor operator Motor (general symbol) Isolator Capacitive divider M M Earth (general symbol) Rectifier with two half-waves (with bridge) Switch-disconnector 33
8. Switchgear applications The SHS2 switch-disconnectors and isolators have mechanical, electrical and layout characteristics ideal for constructing medium voltage metal-enclosed type switchgear for secondary distribution substations. They can be used in standard or arc-proof version units. ABB is able to offer all the apparatus and components needed to complete the switchgear units. Please contact us for further detailed information. SHS2 switch-disconnector. Complete with fuse-holder frame and earthing switch on load side of the fuses. SHS2 isolator. Complete with earthing switch on load side of the circuit-breaker. Example of unit with switch-disconnector and fuses PR521and REF601 switchgear protection devices These are provided on board the HD4/R and VD4/R circuitbreakers combined with current sensors of dedicated type. The REF601 CEI 0-16 version is also available, specially made to comply with CEI 0-16 standards. For further information, please contact us. Circuit-breakers Both the HD4/R series SF6 gas insulated medium voltage circuitbreaker and the VD4/R vacuum circuitbreaker, with right lateral operating Fuses Fuses according to DIN Standards are available to be combined with the SHS2 apparatus. 34
REF542plus microprocessor-based unit The REF542plus unit carries out integration of all the secondary functions relative to a switchgear unit. PR512 switchgear protection devices The PR512 are devices of the self-supplied type and ensure complete protection of the installation without an auxiliary power supply. Voltage transformers The voltage transformers are of the resin insulated type. They comply with the IEC 60044-2 Standards. Their dimensions are normally according to DIN 42600 Standards. Current transformers The current transformers are of the resin insulated type. They comply with the IEC 60044-1 Standards. Their dimensions are normally according to DIN 42600 Standards. Toroidal cable type transformers are also available. mechanism and 230 mm pole centre distance, are available to make units with a circuit-breaker. Example of unit with circuit-breaker. Combined voltagecurrent sensors A range of sensors is available which optimally covers the characteristics of new generations of instruments and of the REF542plus unit in particular. The current sensors conform with the IEC 60044-8 (CDV) Standard, the voltage sensors with the IEC 60044-7 Standard. Their dimensions are according to DIN 42600 Standards. 35
Notes 36
Contact us ABB S.p.A. Power Products Division Unità Operativa Sace-MV Via Friuli, 4 I-24044 Dalmine Tel.: +39 035 6952 111 Fax: +39 035 6952 874 e-mail: sacetms.tipm@it.abb.com www.abb.com The data and illustrations are not binding. We reserve the right to make changes without notice in the course of technical development of the product. Copyright 2010 ABB. All rights reserved. 1VCP000046 - Rev. F, en - Technical catalogue - 2010.08 - (SHS2) (gs) a