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installation and maintenance guide
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PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER
QUALITY DISTURBANCES
Installation & Maintenance Guildline
Schneider Electric 2- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline The switchgear’s resistance to ageing in an MV substation depends on 3 main factors:
The need for proper implementation of connectionsTheir design enables operation in polluted environments with harsh atmospheres.
The influence of the relative humidity factorInstallation of heating resistors is essential in climates with high relative humidity and large temperature differences
Ventilation controlThe grids must be sized according to power loss in the substation.
Schneider Electric 3- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline Equipment operating conditions:
(according to IEC 62271-1)
Normal operating conditions Corrosive atmosphere
Ambient air temperature
• ≤40°C• ≤35°C, on average over 24h• ≥–5°C
Environment No dust, smoke, salt, corrosive or flammable gas and vapour (clean industrial air)
Pollution:SO2 = sulphur dioxide, H2S = hydrogen sulphide
Altitude ≤1000 m (above 1000 m, a derating coefficient will be applied)
Humidity • Average relative humidity over 24h < 95 %,• Average relative humidity over 1 month < 90 %,• Average vapour pressure over 24h < 2.2 kPa,• Average vapour pressure over 1 month < 1.8 kPa
NOTE 1: Condensation can be expected where sudden temperature changes occur in period of high humidity.NOTE 2: To withstand the effects of high humidity and condensation, such as a breakdown of insulation or corrosion of metallic parts, switchgear designed for such conditions and tested accordingly should be used.NOTE 3: Condensation may be prevented by special design of the building or housing, by suitable ventilation and heating of the station or by use of dehumifying equipment.
Schneider Electric 4- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Power Cable Connection:
Dry-type single-core cable: Short inner end, cold fitted
Three core, dry cable: Short inner end, cold fitted
Schneider Electric 5- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Power Cable Connection:
Cable-connection height H: measured from floor to connection point (mm)
Schneider Electric 6- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Power Cable Connection:
Trenches depth P (mm) : the trench depth is given in the following table for usual dry single-core cables type (for tri-core cables consult us).
Schneider Electric 7- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Dimensions and weights:
Refer to technical documents fordetailed dimension.
Schneider Electric 8- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Civil engineering- Ground preparation:
Schneider Electric 9- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Civil engineering- Layout examples:
Schneider Electric 10- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Civil engineering- Layout examples:
Schneider Electric 11- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Civil engineering- Layout examples:
Schneider Electric 12- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Fixing of units with each other :The units are simply bolted together to form the MV switchboard (bolts supplied).
Refer to the Installation Guide for detail
Schneider Electric 13- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Fixing of units on the floor: For switchboards comprising up to three units,
the four corners of the switchboard must be secured to the ground with using:o M8 bolts (not supplied) screwed into nuts set
into the ground using a sealing pistolo screw rods grouted into the ground.
For switchboards comprising more than three units, each unit may be fixed to the ground
In circuit-breaker or contactor units, fixing devices are installed on the opposite side of the switchgear.
Do not secure the cubicle to the floor on the circuit breaker side
Refer to the Installation Guide for detail
Schneider Electric 14- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Fitting the busbars after installing the cubicles :
Refer to the Installation Guide for detail
Field distributor positionedincorrectly
Schneider Electric 15- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Installation:
Check before start-up: Visual check Michanical operation check Electrical operation check Insulation test
Schneider Electric 16- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Maintenance:
Reduce wear & tear, maximize Safety & Availability of your Electrical equipment : Your equipment needs regular check-ups in order to maintain its original level of
performance To ensure the maintenance is conducted in the optimal way, it needs to be
executed by skilled professionals Recommended maintenance frequency of operations depends on 3 main criteria:
Equipment operating conditions Number of operating cycles Equipment’s level of Criticality
Manufacturer maintenance operations must be carried out regularly from every 5 years if operating in normal conditions, 1 or 2 years if operation in a corrosive atmosphere or not normal conditions.
Schneider Electric 17- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Maintenance- plan:
Main recommended activities Remark
Visual inspection
1. Switchgear compartment2. Busbars compartment3. Connection / switchgear compartment4. Operating mechanism cabinet5. LV Control cabinet
Disassembly
1. Remove covers (LV Control cabinet, Operating mechanism cabinet, connection / switchgear)
2. Remove operating mechanism (if any)3. Remove MV fuses 4. Contactor disconnection
Schneider Electric 18- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Maintenance- plan:
Main recommended activities Remark
Clean / Grease
1. Busbar compartment2. Clean compartment / enclosure / busbars3. Check presence of tension4. Connection / switchgear compartment5. Clean compartment / enclosure / clusters / earth disconnector splitters6. Grease earth disconnector clusters / links / contacts7. Operating mechanism8. Clean mechanical links (do NOT grease)
Inspection
1. Inspection of auxiliaries (weldings, triggers, motors, …)2. Inspection of lockings3. Inspection of latching system 4. Inspection of earthing interlock disconnector operating mechanism5. Inspection of operating mechanism electrical connections (tightening, fixing),
microcontacts
Schneider Electric 19- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Maintenance- plan:
Main recommended activities Remark
Inspection- Busbar compartment
1. Inspection of enclosure (chalking, cracking, signs of heating)2. Inspection of busbars (signs of heating, thightening)3. Inspection of isolators (chalking, signs of heating)4. Inspection of earth disconnector (cluster strength / tightening, mechanical
operation)
Inspection - Connection / switchgear compartment
1. Inspection of enclosure (chalking, cracking, signs of heating)2. inspection of cables (chalking, heating signs) & connections (tightening, fixing)3. Inspection of isolators (chalking, signs of heating)4. Inspection of clusters contact pressure5. Clean / inspection of Volt Trans (chalking, cracking, signs of heating)6. Clean / inspection of Current transformers / toroids (chalking, signs of heating)
Schneider Electric 20- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Maintenance- plan:
Main recommended activities Remark
Inspection of MV fuses
1. Inspection of fuses fixing2. Inspection of fuse caliber, general status (chalking, color, cracking, corrosion)3. Inspection of clusters contact pressure
Tests
1. Check mechanical / electrical operation of operating mechanism2. Check electrical opening/closing of disconnector / contactor / circuit-breaker3. Check fuse disconnection system
Reassembly
1. Fix covers (LV Control cabinet, Operating mechanism cabinet)2. Fusibles3. Secure good fuse hublots location
Schneider Electric 21- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
PROVIDING ENGINEERING FOR OPERATION TRAINING MV SWITCHGEAR WITH SEPAM RELAY AND POWER QUALITY DISTURBANCES
SM6- Installation & Maintenance Guildline SM6-24- Maintenance- plan:
Schneider Electric proprietary Predictive tools
1. ProDiag2. ProCorona3. ProFusion4. IR Thermography (non proprietary tool)
Schneider Electric 22- Field Services Division Operation training for electrical engineer - NESTLE Viet nam – Tri An Plant
Thanks! Make the most of your energy
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