Ring Main Unit Siemens 8dhjst India
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Ring Main Unit: 8DJH ST Cost efficient solution for secondary power distribution Presentation, Ver 1.0 siemens.com/answers
8DJH ST: Secondary distribution
Page 2
April 14
IC LMV MS S GIS
8DJH ST: Applications
RRR
Page 3
April 14
IC LMV MS S GIS
8DJH ST: Applications
Page 4
April 14
IC LMV MS S GIS
8DJH ST: SF6 gas for insulation
Vacuum for switching & SF6 for insulation No toxic gases due to interruption in vacuum Climate independent and maintenance free design High dielectric strength thereby reducing volume of switchgear Sealed for life Safe and low-tolerance pressure co-ordination for pressure relief system
Page 5
April 14
IC LMV MS S GIS
8DJH ST: Technical details
Ratings up to 12kV, 630A, 21kA 3s STC Internal arc classification IAC A FLR 20kA 0.1s [21kA 1.0s available on request] Factory-assembled, type-tested, metal-enclosed switchgear according to IEC 62271-200 Blocks consisting up to 5 feeders in a single tank
Page 6
April 14
IC LMV MS S GIS
8DJH ST: Technical details Technical features Rated values up to
12kV, 21kA 3s
Rated frequency
50Hz
Busbar current up to
630A
Feeder current up to
630A
Busbars
Single busbar
Rated power frequency withstand voltage
28kV
38kV
Rated lighting impulse withstand voltage
75kVp
95kVp
Rated making current
52.5kAp
Rated breaking current
21kA
Insulation
Gas insulated
Switchgear vessel
Hermetically sealed
Page 7
April 14
IC LMV MS S GIS
8DJH ST: Technical details Classification according to IEC 62271-200 Partition class
PM
Loss of service continuity category
LSC 2
Accessibility to compartments
Busbar compartment: Non-accessible Switching-device compartment: Non-accessible Cable compartment: Interlock-controlled
Degree of protection
For switchgear enclosure [Indoor]: IP3X For switchgear enclosure [Outdoor]: IP54 For gas filled vessel: IP65
Internal arc classification
IAC A FLR 20 kA, 0.1 s IAC A FLR 21 kA, 1.0 s
Page 8
April 14
IC LMV MS S GIS
8DJH ST: Technical details One way typical [310mm]
Two way typical [620mm]
Three way typical [930mm]
Four way typical [1240mm]
Five way typical [1550mm]
R
RK
RRR
RRRR
RRRRR
L
RR
RRL
RRRL
LRRLL
K
RL
RLR
LRRL
LLLLL
S*
LK
ME 1 $ ME 2 $ Legends:
R [Ring main feeder] S [Bus coupler feeder]
L [Circuit breaker feeder] ME1 [Line metering feeder]
K [Cable connection feeder] ME2 [Bus metering feeder]
Extensibility options: on both side, on right hand side, on left hand side Panel combination with metering will be on right side always. No further extensibility on right side possible with metering Bus coupler feeder will always have extensibility on both sides Width indicated above is for vessel * - Width of Bus coupler feeder vessel is 620mm $ - Width of metering feeder vessel is 630mm Page 9
April 14
IC LMV MS S GIS
8DJH ST: Technical details Dimensions Block width depending on number and type of panels
645mm, 955mm, 1265mm, 1575mm
Panel height
1620 mm
Operating height
<1500mm
Panel depth
Bottom explosion: 820 mm Top explosion: 918 mm
Page 10
April 14
IC LMV MS S GIS
8DJH ST: Vacuum circuit breaker Technical details Rated voltage
12kV
Rated current
630A
Basic insulation level
12kV / 28kV / 75kVp
Rated short time withstand current
21kA, 3s
Rated short circuit breaking / making current
21kA / 52.5kAp
Rated operating sequence
O-3min-CO-3min-CO
Endurance class Breaking [2,000 times mechanically without maintenance]
M1 [IEC62271-100]
Breaking [2,000 times rated normal current without maintenance]
E2 [IEC62271-100]
Breaking [Low probability of restrikes]
C1 [IEC62271-100]
Breaking [For cable systems]
S1 [IEC62271-100]
Page 11
April 14
IC LMV MS S GIS
8DJH ST: Three position disconnector for CB Technical details Rated short time withstand current
21kA, 3s
Endurance class Disconnecting [1,000 times mechanically]
M0
Earthing [1,000 times mechanically] Earthing [5 making operations through VCB]
Page 12
April 14
IC LMV MS S GIS
E2
8DJH ST: Three position switch for Ring main feeder Technical details Rated voltage
12kV
Rated current
630A
Basic insulation level
12kV / 38kV / 95kVp
Rated short time withstand current
21kA, 3s
Rated short circuit making current
52.5kA
Rated breaking current
630A
Endurance class Disconnecting [1,000 times mechanically]
M0 [IEC62271-102]
Earthing [5 times rated short-circuit making current]
E2 [IEC62271-102]
Load breaking [1,000 times mechanically]
M1 [IEC 60265-1]
Load breaking [100 times rated breaking current 5 times rated short-circuit making current]
E3 [IEC 60265-1]
Page 13
April 14
IC LMV MS S GIS
8DJH ST: Technical details Standards Switchgear Devices
IEC 62271-1 IEC 62271-100
Circuit Breakers Disconnector & Earthing Switch Switch-disconnector Voltage detection systems
IEC 62271-200 IEC 62271-102 IEC 62271-103 IEC 61243-5
Degree of protection
IEC 60529
Insulation
IEC 60071
Instrument transformers Current transformer Voltage transformer
IEC 61869-2 IEC 61869-3
Installation & commissioning
IEC 61936-1
Page 14
April 14
IC LMV MS S GIS
8DJH ST: One way typical
Page 15
April 14
IC LMV MS S GIS
8DJH ST: Two way typical
Page 16
April 14
IC LMV MS S GIS
8DJH ST: Three way typical
Page 17
April 14
IC LMV MS S GIS
8DJH ST: Four way typical
Page 18
April 14
IC LMV MS S GIS
8DJH ST: Five way typical
Page 19
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Vessel]
Stainless steel vessel Insensitive to temperature and pressure variations Stable dew-point behavior Modern and safe laser welding technology Maximum flexural and burst strength Safe and low-tolerance pressure co-ordination for pressure relief system Maintenance-free [leakage of 0.1% p.a.] High quality non magnetic SS
Page 20
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Pressure detection systems]
Manometer Clearly visible indication [Red/Green] Refilling of gas possible Optionally with signaling contact
Page 21
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Pressure detection systems]
Ready for service indication [with aux contacts] Temperature and pressure compensated gas density measurement (2) Magnetic coupling (3) between measurement box and indication Independent of site altitude & ambient temperature Optionally with signaling contact
Indication: 4 Not ready for service 5 Ready for service
Page 22
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Cable connection]
Climate independent connection system Cable connections for bushings with outside cone Insensitive to pollution and condensation Switchgear or panel extension possible without gas work Corrosion free and maintenance free connection
Page 23
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Extension]
High flexibility for creation of switchgear configurations Busbar extension possible on all individual panels & panel blocks [optional] Plug-in unit consisting of contact coupling & screened silicone coupling Centering via guide bolts & stop angles Corrosion free and maintenance free connection
Page 24
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Interlocks]
Switchgear interlocking with logical mechanical interlocks Switching gate prevents direct operation from CLOSE to EARTH and EARTH to CLOSE Cable compartment can be removed only after feeder is eatthed and operating lever removed Active interlocks between circuit breaker and three position disconnector Closing and opening of circuit breaker not possible if operating lever is inserted
Page 25
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Interlocks]
Switchgear interlocking with logical mechanical interlocks Optional Three position disconnector can be operated only if cable cover is closed Closing & opening lock-out in case cable cover is removed for three position disconnector Padlocking in all three positions
Page 26
April 14
IC LMV MS S GIS
8DJH ST: Fault passage indicator
Short circuit / Earth fault indicator Indication at the switchgear front Factory assembled including sensor mounting Manual / Automatic reset Optical signals for a preselected pick-up values Optionally remote electrical indication
Short circuit indicator Page 27
April 14
IC LMV MS S GIS
Earth fault indicator
8DJH ST: Voltage detection systems
Safe to touch With voltage indicator Verification of safe isolation from supply phase by phase Voltage indicator flashes in presence of high voltage Indicator suitable for continuous operation Measuring system and voltage indicator can be tested
Page 28
April 14
IC LMV MS S GIS
8DJH ST: SCADA compatibility
Ease of communication Motorized VCB / LBS Self powered numerical relay Mini RTUs Power pack Control MCCBs Pre wired auxiliary contacts
Page 29
April 14
IC LMV MS S GIS
8DJH ST: Safe and Reliable Safe and Reliable Dielectric test Temperature rise test Short time withstand current Peak withstand current Verification of IP code Pressure withstand test for gas-filled compartment Tightness test Internal arc test Alternating pressure test [10,000 cycles] Climatic tests on components Switching performance test Mechanical endurance test Disconnector switch switching test Page 30
April 14
IC LMV MS S GIS
8DJH ST: Customer benefits
Page 31
April 14
IC LMV MS S GIS
8DJH ST: We are serving
Page 32
April 14
IC LMV MS S GIS
Thank You for your attention
Page 33
April 14
IC LMV MS S GIS
8DJH ST: Secondary distribution
Page 2
April 14
IC LMV MS S GIS
8DJH ST: Applications
RRR
Page 3
April 14
IC LMV MS S GIS
8DJH ST: Applications
Page 4
April 14
IC LMV MS S GIS
8DJH ST: SF6 gas for insulation
Vacuum for switching & SF6 for insulation No toxic gases due to interruption in vacuum Climate independent and maintenance free design High dielectric strength thereby reducing volume of switchgear Sealed for life Safe and low-tolerance pressure co-ordination for pressure relief system
Page 5
April 14
IC LMV MS S GIS
8DJH ST: Technical details
Ratings up to 12kV, 630A, 21kA 3s STC Internal arc classification IAC A FLR 20kA 0.1s [21kA 1.0s available on request] Factory-assembled, type-tested, metal-enclosed switchgear according to IEC 62271-200 Blocks consisting up to 5 feeders in a single tank
Page 6
April 14
IC LMV MS S GIS
8DJH ST: Technical details Technical features Rated values up to
12kV, 21kA 3s
Rated frequency
50Hz
Busbar current up to
630A
Feeder current up to
630A
Busbars
Single busbar
Rated power frequency withstand voltage
28kV
38kV
Rated lighting impulse withstand voltage
75kVp
95kVp
Rated making current
52.5kAp
Rated breaking current
21kA
Insulation
Gas insulated
Switchgear vessel
Hermetically sealed
Page 7
April 14
IC LMV MS S GIS
8DJH ST: Technical details Classification according to IEC 62271-200 Partition class
PM
Loss of service continuity category
LSC 2
Accessibility to compartments
Busbar compartment: Non-accessible Switching-device compartment: Non-accessible Cable compartment: Interlock-controlled
Degree of protection
For switchgear enclosure [Indoor]: IP3X For switchgear enclosure [Outdoor]: IP54 For gas filled vessel: IP65
Internal arc classification
IAC A FLR 20 kA, 0.1 s IAC A FLR 21 kA, 1.0 s
Page 8
April 14
IC LMV MS S GIS
8DJH ST: Technical details One way typical [310mm]
Two way typical [620mm]
Three way typical [930mm]
Four way typical [1240mm]
Five way typical [1550mm]
R
RK
RRR
RRRR
RRRRR
L
RR
RRL
RRRL
LRRLL
K
RL
RLR
LRRL
LLLLL
S*
LK
ME 1 $ ME 2 $ Legends:
R [Ring main feeder] S [Bus coupler feeder]
L [Circuit breaker feeder] ME1 [Line metering feeder]
K [Cable connection feeder] ME2 [Bus metering feeder]
Extensibility options: on both side, on right hand side, on left hand side Panel combination with metering will be on right side always. No further extensibility on right side possible with metering Bus coupler feeder will always have extensibility on both sides Width indicated above is for vessel * - Width of Bus coupler feeder vessel is 620mm $ - Width of metering feeder vessel is 630mm Page 9
April 14
IC LMV MS S GIS
8DJH ST: Technical details Dimensions Block width depending on number and type of panels
645mm, 955mm, 1265mm, 1575mm
Panel height
1620 mm
Operating height
<1500mm
Panel depth
Bottom explosion: 820 mm Top explosion: 918 mm
Page 10
April 14
IC LMV MS S GIS
8DJH ST: Vacuum circuit breaker Technical details Rated voltage
12kV
Rated current
630A
Basic insulation level
12kV / 28kV / 75kVp
Rated short time withstand current
21kA, 3s
Rated short circuit breaking / making current
21kA / 52.5kAp
Rated operating sequence
O-3min-CO-3min-CO
Endurance class Breaking [2,000 times mechanically without maintenance]
M1 [IEC62271-100]
Breaking [2,000 times rated normal current without maintenance]
E2 [IEC62271-100]
Breaking [Low probability of restrikes]
C1 [IEC62271-100]
Breaking [For cable systems]
S1 [IEC62271-100]
Page 11
April 14
IC LMV MS S GIS
8DJH ST: Three position disconnector for CB Technical details Rated short time withstand current
21kA, 3s
Endurance class Disconnecting [1,000 times mechanically]
M0
Earthing [1,000 times mechanically] Earthing [5 making operations through VCB]
Page 12
April 14
IC LMV MS S GIS
E2
8DJH ST: Three position switch for Ring main feeder Technical details Rated voltage
12kV
Rated current
630A
Basic insulation level
12kV / 38kV / 95kVp
Rated short time withstand current
21kA, 3s
Rated short circuit making current
52.5kA
Rated breaking current
630A
Endurance class Disconnecting [1,000 times mechanically]
M0 [IEC62271-102]
Earthing [5 times rated short-circuit making current]
E2 [IEC62271-102]
Load breaking [1,000 times mechanically]
M1 [IEC 60265-1]
Load breaking [100 times rated breaking current 5 times rated short-circuit making current]
E3 [IEC 60265-1]
Page 13
April 14
IC LMV MS S GIS
8DJH ST: Technical details Standards Switchgear Devices
IEC 62271-1 IEC 62271-100
Circuit Breakers Disconnector & Earthing Switch Switch-disconnector Voltage detection systems
IEC 62271-200 IEC 62271-102 IEC 62271-103 IEC 61243-5
Degree of protection
IEC 60529
Insulation
IEC 60071
Instrument transformers Current transformer Voltage transformer
IEC 61869-2 IEC 61869-3
Installation & commissioning
IEC 61936-1
Page 14
April 14
IC LMV MS S GIS
8DJH ST: One way typical
Page 15
April 14
IC LMV MS S GIS
8DJH ST: Two way typical
Page 16
April 14
IC LMV MS S GIS
8DJH ST: Three way typical
Page 17
April 14
IC LMV MS S GIS
8DJH ST: Four way typical
Page 18
April 14
IC LMV MS S GIS
8DJH ST: Five way typical
Page 19
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Vessel]
Stainless steel vessel Insensitive to temperature and pressure variations Stable dew-point behavior Modern and safe laser welding technology Maximum flexural and burst strength Safe and low-tolerance pressure co-ordination for pressure relief system Maintenance-free [leakage of 0.1% p.a.] High quality non magnetic SS
Page 20
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Pressure detection systems]
Manometer Clearly visible indication [Red/Green] Refilling of gas possible Optionally with signaling contact
Page 21
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Pressure detection systems]
Ready for service indication [with aux contacts] Temperature and pressure compensated gas density measurement (2) Magnetic coupling (3) between measurement box and indication Independent of site altitude & ambient temperature Optionally with signaling contact
Indication: 4 Not ready for service 5 Ready for service
Page 22
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Cable connection]
Climate independent connection system Cable connections for bushings with outside cone Insensitive to pollution and condensation Switchgear or panel extension possible without gas work Corrosion free and maintenance free connection
Page 23
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Extension]
High flexibility for creation of switchgear configurations Busbar extension possible on all individual panels & panel blocks [optional] Plug-in unit consisting of contact coupling & screened silicone coupling Centering via guide bolts & stop angles Corrosion free and maintenance free connection
Page 24
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Interlocks]
Switchgear interlocking with logical mechanical interlocks Switching gate prevents direct operation from CLOSE to EARTH and EARTH to CLOSE Cable compartment can be removed only after feeder is eatthed and operating lever removed Active interlocks between circuit breaker and three position disconnector Closing and opening of circuit breaker not possible if operating lever is inserted
Page 25
April 14
IC LMV MS S GIS
8DJH ST: Constructional features [Interlocks]
Switchgear interlocking with logical mechanical interlocks Optional Three position disconnector can be operated only if cable cover is closed Closing & opening lock-out in case cable cover is removed for three position disconnector Padlocking in all three positions
Page 26
April 14
IC LMV MS S GIS
8DJH ST: Fault passage indicator
Short circuit / Earth fault indicator Indication at the switchgear front Factory assembled including sensor mounting Manual / Automatic reset Optical signals for a preselected pick-up values Optionally remote electrical indication
Short circuit indicator Page 27
April 14
IC LMV MS S GIS
Earth fault indicator
8DJH ST: Voltage detection systems
Safe to touch With voltage indicator Verification of safe isolation from supply phase by phase Voltage indicator flashes in presence of high voltage Indicator suitable for continuous operation Measuring system and voltage indicator can be tested
Page 28
April 14
IC LMV MS S GIS
8DJH ST: SCADA compatibility
Ease of communication Motorized VCB / LBS Self powered numerical relay Mini RTUs Power pack Control MCCBs Pre wired auxiliary contacts
Page 29
April 14
IC LMV MS S GIS
8DJH ST: Safe and Reliable Safe and Reliable Dielectric test Temperature rise test Short time withstand current Peak withstand current Verification of IP code Pressure withstand test for gas-filled compartment Tightness test Internal arc test Alternating pressure test [10,000 cycles] Climatic tests on components Switching performance test Mechanical endurance test Disconnector switch switching test Page 30
April 14
IC LMV MS S GIS
8DJH ST: Customer benefits
Page 31
April 14
IC LMV MS S GIS
8DJH ST: We are serving
Page 32
April 14
IC LMV MS S GIS
Thank You for your attention
Page 33
April 14
IC LMV MS S GIS
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