RM6 Merlin Gerin 24 KV - Trinet Grup
ibleon the right or the leftfunction configurationIQDBTIIQDBIExample of designationRM6 NE-IQIRM6 RE-DIDI8RM6 rangeSchneider Electric
Main characteristicsTable of electrical characteristicsRated voltage (kV)insulation levelindustrial frequencyimpulseNetwork-switchrated current (A)(1)breaking capacity (A)(1)50 Hz 1 mn (kV eff.)1,2/50 µs (kV crête)charging currentearth leakage faultno-load cableshort-time withstand current (kA eff. 1 s)(2)making capacity of switchand earthing switches (kA peak)Transformer feederrated current (A)off-load transformer laking capacity (A)Fuse-switchshort-circuit breaking capacity (kA)(3)making capacity (kA peak)(3)Circuit breakershort-circuit breaking capacity (kA)making capacity (kA peak)Line protection feederrated current (A)short-circuit breaking capacity (kA)making capacity (kA peak)1) In accordance with IEC guidelines, these characteristics arevalid for ambient temperatures of between -25 C and 40 C(class: -25 C).For higher temperatures, the permissible current (in A)becomes:TemperatureIndoor installation40 C40063045 C40057550 C400515(2) For 3 sec. thermal withstand, please consult us.(3) Prospective value, the actual current being limitedby the fuse.(4) Limited to 12 kV.55 02152.525(4)62.5(4)63016402152.5StandardsRM6 meets international standards:Normal operating conditions for indoor switchgear as laid down byIEC 60694 : Common specifications for hight-voltage switchgear andcontrolgear standards.b Ambient temperature: class -25 indoorsv lower than or equal to 40 C.v lower than or equal to 35 C on average over 24 hours.v greater than or equal to - 25 C.b Altitude:v lower than or equal to 1000 m,v above 1000 m, and up to 3000 m, with directed field connections.b Breaking capacity:RM6 switch-disconnectors are "E3/M1 class switch-disconnectors" which are inconformity with IEC standard 60265, i.e., : Hight voltage switches for ratedvoltages of 52kV and above.v 100 CO cycles at rated current and 0.7 p.f.,v 1000 mechanical opening operations.200 and 630 A circuit breakers are designed to carry out:IEC 62271-100 (to replace IEC 60056) : Hight-voltage alternating current circuitbreakers.v 2000 mechanical opening operations, in conformity with IEC standard 60056,v 3 OC cycles at short-circuit current.Other standards :IEC 60298 : A.C. metal-enclosed switchgear and controlgear for rated voltage above1kV and up to including 52kV.IEC 60420 : Hight voltage alternatif current switch-fuse combinations.IEC 60255 : Electrical relays.IEC 62271-102 (to replace IEC 60129) : Hight-volatge alternating currentdisconnectors and earthing switches.Schneider ElectricRM6 range9
Description of the rangeTransformer protectionby fuse-switch combinationsNon-extensible switchgearNE-QINE-IQINE-IIQINE-QIQIExtensible switchgearRE-IQIRE-IIQIRE-QIQIDE-IDE-QTransformer protectionby 200 A circuit breakerNon-extensible switchgearNE-DNE-DINE-IDINE-IIDINE-DIDIExtensible switchgearRE-IDI10RE-IIDIRE-DIDIRM6 rangeDE-IDE-DSchneider Electric
Description of the rangeNetwork pointswith switch disconnectorNon extensible switchgearNE-INE-IINE-IIINE-IIIINE-TIII with built-in VTExtensible switchgearRE-IIIRE-IIIIDE-INetwork points with 630 A circuit breakerNon extensible switchgearNE-IBINE-IIBINE-BIBINE-DNE-DIExtensible switchgearRE-IBISchneider ElectricRE-IIBIRE-BIBIRM6 rangeDE-IDE-B11
Description of theswitchgearSafety of peopleSwitchgearSwitch-disconnectors and circuit breakers have similar architecture:b a moving contact assembly with 3 stable positions (closed, open and earthed)moves vertically (see sketch). Its design makes simultaneous closing of the switchor circuit breaker and the earthing switch impossible,b the earthing switch has a short-circuit making capacity, as required by thestandards,b the RM6 combines both the isolating and interrupting functions,b the earth collector has the correct dimensions for the network,b access to the cable compartment can be interlocked with the earthing switch and/or the switch or circuit breaker.3 stable position switchReliable operating mechanismsThe electrical and mechanical operating mechanisms are located behind a front platedisplaying the mimic diagram of the switchgear status (closed, open, earthed):b closing: the moving contact assembly is manipulated by means of a fast-actingoperating mechanism . Outside these manipulations, no energy is stored.For the circuit breaker and the fuse-switch combination, the opening mechanism ischarged in the same movement as the closing of the contacts.b opening: opening of the switch is carried out using the same fast-actingmechanism, manipulated in the opposite direction.For the circuit breaker and fuse-switch combination, opening is actuated by:v a pushbutton,v a fault.b earthing: a specific operating shaft closes and opens the earthing contacts. Thehole providing access to the shaft is blocked by a cover which can be opened if theswitch or circuit breaker is open, and remains locked when it is closed.b switchgear status indicators: are placed directly on the moving contactassembly operating shafts. They give a definite indication of the position of theswitchgear (attachment A of IEC standard 60129).b operating lever: this is designed with an anti-reflex device which prevents anyattempt to immediately reopen the switch-disconnector or the earthing switch afterclosing.b padlocking facilities: 1 to 3 padlocks can be used to prevent:v access to the switch or circuit breaker operating shaft,v access to the earthing switch operating shaft,v operation of the opening pushbutton.Earthing displayb earthing switch closed position indicators: these are located on the upper partof the RM6. They can be seen through the transparent earthing covers, when theearthing switch is closed.Internal arc withstandThe robust, reliable and environmentally insensitive design of the RM6 makes ithighly improbable that a fault will appear inside the switchgear.Nevertheless, in order to ensure maximum personal safety, the RM6 is designed towithstand an internal arc supplied by a rated short-circuit current for 1 second,without any danger to the operator.Accidental overpressure due to an internal arc is limited by the opening of the safetyvalve, at the bottom of the metal enclosure.The gas is released to the rear of the RM6 without affecting conditions in the front.After standard testing carried out for 20 kA, 1s, the device meets the six criteriadefined by appendix AA of IEC 60298.12RM6 rangeSchneider Electric
Description of theswitchgearInsensitivity to the environmentComplete insulationb A metal enclosure made of stainless steel, which is unpainted and gas-tight(IP67), contains the live parts of the switchgear and the busbars;b Three sealed fuse chambers, which are disconnectable and metallized on theoutside, insulate the fuses from dust, humidity.b Metallization of the fuse chambers and directed field terminal connectorsconfines the electrical field in the solid insulation.Taken together, the above elements provide the RM6 with genuine total insulationwhich makes the switchgear completely insensitive to environmental conditions,dust, extreme humidity, temporary soaking.(IP67: immersion for 30 mn, as laid down in IEC standard 60529, § 14.2.7).Operating safetyCable insulation testIn order to test cable insulation or look for faults, it is possible to inject a directcurrent of up to 42 kVdc for 15 minutes through the cables via the RM6, withoutdisconnecting the connecting devices.The earthing switch is closed and the moving earthing connection is opened in orderto itches,b the phase operating current is adjusted directly according to the transformer ratingand the operating voltage,b the earth current set point is adjusted according to the network characteristics.Phase protectionb phase protection is provided by an IDMT set point which operates as of 1.2 timesthe operating current (Is). VIP 30 and VIP 35 phase protections are identical.Earth protectionb earth fault protection operates with measurement of the residual current carriedout using the sum of the secondary currents of the sensors,b earth protection operates in definite time: both its set point and time delay areadjustable.0The curve represent the relay intervention time, to which 70 msmust be added to obtain the breaking time.Rated protection current setting 8152022transformer rating (kVA)5075100 125 16010108Schneider 686856373628252518170140140908070554536363022RM6 rangerated1000 1250 1600 2000 2500 3000 voltage(kV)20012200140 200140 140 200140 140 200 20090140 140 2006880140 140 170 200556890140 140 17046556890140 140 2445556880140 140374555688014028364555688015
Line protectionUsing a 630 A circuit breakerThe 630 A circuit breaker has been designed to protect medium voltage feeders asnear to the fault as possible. The protection unit is identical to that of the 200 A circuitbreaker, with a VIP 300 relay adapted to network protection.VIP 300 self-powered protection relayb VIP 300 protects against phase to phase faults and earth faults. The choice oftripping curves, and the multiplicity of settings enable it to be used with a wide varietyof discrimination plans.b VIP 300 is a self-powered relay which obtains its power supply from currentsensors. It does not need an auxiliary power supply. It actuates a release.VIP 300DescriptionThe operating principle of the protection unit is the same as for the VIP 300 andVIP 35 relays.Phase protectionb Phase protection has two independently adjustable set points:v either an IDMT or definite low set point can be selected. The IDMT curves are inconformity with the IEC 60255-3 standard. They are of the inverse, very inverse andextremely inverse type,v the high set point is a definite time one.Earth protectionb Earth fault protection operates with measurement of the residual current carriedout using the sum of the secondary currents of the sensors.b As with phase protection, earth protection has two independently adjustable setpoints.Indicationb Two indicators show the origin of tripping (phase or earth). They remain in positionafter the relay power supply is cut off.b Two LED indicators (phase and earth) indicate that the low set point has beenexceeded and its time delay is in progress.With IDMT low set point16RM6 rangeWith definite time low set pointSchneider Electric
Line protectionIDMT tripping curvesb The curves in this chapter indicate the low set IDMT tripping times for time delaysettings t (or to ).b The phase protection and earth protection curves are identical.b Total breaking time (see VIP200).Schneider ElectricSI curveVI curveEI curveRI curveRM6 range17
Selection of connectionsGeneralb The profiles, contacts and dimensions of the RM6 connection interfaces aredefined by the EN50181 standard.b 100% of the epoxy resin interfaces undergo dielectric testing at power frequencyand partial discharge tests.Appropriateness for useTypes of connection interfaceThe bushings carry the electrical current from the outside to the inside of theenclosure, which is filled with SF6 gas, ensuring insulation between the liveconductors and the frame.There are 3 types of bushing, which are defined by their short-time withstandcurrent:type A: 200 A: 12,5 kA 1 s and 31,5 kA peak (plug-in)type B: 400 A: 16 kA 1 s and 40 kA peak (plug-in)type C: 630 A: 25 kA 1 s and 62,5 kA peak (disconnectable M16)How to define the connection interfaceThe connection interfaces depend on specific criteria, such as:Installationb current rating of the connected equipment: 200, 400, 630 Ab short-time withstand current for 12.5 kA, 16 kA, 25 kA switch and circuit breakerfunctionsb for the fuse-switch combination function, as the short-circuit current is limited bythe fuse, the connection interface will be of type A (200 A)b minimum phase expansion lengthb connection type:v plug in: multicontact ringv disconnectable: boltedb output position: straight, elbowThis informations must be specified forbetter definition of the d voltage:of the cable,of the network,type of conductor:aluminium,copper,cross section in mm2insulation diametercable composition:single-core,3-core,insulation type:dry,paper impregnated (non-draining type)type of screenarmature.Standard cable compartment equipmentb a closing panel,b cable binding,b cable grounding connections.Options:v panel with hood for display of liquid type overcurrent indicators installed aroundthe cables,v panel for connectors with lightning arrestor,v interlocking which prohibits access to the connection compartment when theearthing switch is open,v interlocking which prohibits closing of the switch or circuit breaker when theconnection compartment panel is open,v back of compartment for single-core or 3-core cables (mandatory for non-directedfield connections),v cable compartment internal arc withstand up to 16 kA 1s.18RM6 rangeSchneider Electric
Selection of connectionsFor network switch-disconnectorsDry single-core cableType B bushing - 400 A, limites to 16 kA/1sDirected field plug-in connectorperformanceconnection7.2 to 10 kVplug-in400 A-95 kV impulse24 kVplug-in400 A-125 kV impulsesupp
Electrical arc extinction is obtained using the SF6 puffer technique. Circuit breaker Electrical arc extinction is obtained using the rotating arc technique plus SF6 auto-expansion, allowing breaking of all currents up to the short-circuit current. Selection of functions The range offers the
RM6 meets all medium voltage secondary distribution needs up to 24kV. schneider-electric.com RM6 catalog 9 . RM6 meets all medium voltage secondary distribution needs in more complex . a direct voltage of up to 42 kVdc for 15 minutes through the cables via the RM6,
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Merlin Gerin Circuit breaker application guide MM M M M M M M M M M M M MERL IN GER IN multi 9 C60N C63 4 0Va 6 0 0 24 34 2 4 10kA IEC 947 .2 O - OFF 6 8 1 3 5 7
Merlin Gerin 1 contents page C60a 2 C60N 3 C60H 4 C60N UL489 - DC circuit breaker 5 DC circuit breaker - application guide 8 C120N 9 C120H 13 NC100L 17 NC100LH 19 electrical auxiliaries C60, C120 21 electrical auxiliaries NC100 22 instantaneous RCCB/ELCB, selective RCCB/ELCB 24 electrical auxiliaries RCCB/ELCB 26 discrimination 28 cascading 30 dimensions 31 semi-equipped consumer unit 32
The RM6 can be adapted to meet all Medium Voltage power distribution needs, up to 24 kV. The RM6 is a compact unit combining all MV functional units to enable connection, supply and protection of transformers on an open ring or radial network: by a fuse-switch combination, up to 2000 kVA ; by a circuit breaker with protection unit, up to 8000 .
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