MV Capacitor units Advanced Power Quality training session

MV Capacitor units Advanced Power Quality training session Presented by: Thierry LE GUILLOU Confidential Property of Schneider Electric

The different types of MV Capacitor units Confidential Property of Schneider Electric | Page 2

MV Capacitors evolution Capacitors PLASTIVAR Impregnated paper With PCB Volume PCB = 7 à 20 litres 1950 1969 BIOVAR 1978 PROPIVAR NG PROPIVAR 1985 1997 2012

PROPIVAR NG - Technology Confidential Property of Schneider Electric | Page 4

MV Capacitor technology Electrodes Dielectric Aluminium foil 1 Polypropylene 2 layers pp 1+pp 2 Polypropylene 2 layers pp 3+pp 4 Aluminium foil 2

MV Capacitor technology Propivar NG 1 1 Bushings: Porcelain > Insulated bushings compliant to IEC 60137 2 Capacitor element: Electrodes: Folded Aluminium foil Dielectric: Polypropylene film > Lower electrical stresses > Minimized partial discharges 3 Internal connections: Large cross section > Low watt losses > Long lifetime 4 Dielectric fluid: Jarylec C 101 > Bio-degradable non-PCB fluid > High insulation strenght 5 Container (Grey, RAL 7038): Stainless steel blasted surface and paint (one layer of two-component 2 3 4 5 paint, plus one layer of hydro paint) > Low dielectric losses > Long lifetime > Fully TIG welded > High protection against corrosion and harsh climatic conditions

PROPIVAR NG - Ranges Confidential Property of Schneider Electric | Page 7

PROPIVAR NG Capacitor units Single phase unit Three phase unit Double phase unit

PROPIVAR NG Capacitor units Single phase unit Three phase unit Double phase unit

Unbalance protection L 1 L 2 L 3 L 1 x x N 2 N 1 In > Single phase unit

Unbalance protection L 1 L 2 L 3 N 1 L 1 N 2 x x x N 2 N 1 In > Double phase unit

PROPIVAR NG range – Single phase units Technology: Location: Reactive power: Operating frequency: Capacitor voltage range: All film capacitors Outdoor or indoor Up to 1000 kvar 50 Hz and 60 Hz 1 -17. 3 k. V (for network from 2. 4 to 34. 5 k. V when used in star connection) Current: Low losses Internal fuses Discharge resistors: Max. 160 A < 0. 2 W/kvar Built-in, standard residual voltage 75 V - 10 min. (option for 50 V - 5 min. ) Dielectric: Dielectric Fluid: Bushings: Terminals: Mounting brackets: Temperature range: Polypropylene film Jarylec C 101 2 in porcelain (1 on request) M 16 x 20 One per side -25°C to +50°C (-40°C to +55°C on request)

PROPIVAR NG range – Three phase units Technology: Internal delta connection Location: Reactive power: Operating frequency: Capacitor voltage range: Current: Low losses Discharge resistors: All film capacitors Outdoor or Indoor Up to 600 kvar 50 Hz and 60 Hz 1 -12 k. V Max. 160 A < 0. 2 W/kvar Built-in, standard residual voltage 75 V - 10 min. (option for 50 V - 5 min. ) Dielectric: Dielectric Fluid: Bushings: Terminals: Mounting brackets: Temperature range: Polypropylene film Jarylec C 101 3 in porcelain M 16 x 20 One per side -25°C to +50°C (-40°C to +55°C on request)

PROPIVAR NG range – Double phase units Technology: All film capacitors 2 x single-phase capacitors internal assembly Location: Outdoor or Indoor Reactive power: Up to 800 kvar = 2 x 400 kvar Operating frequency: 50 Hz and 60 Hz Capacitor voltage range: 1 -9 k. V (for network from 3, 3 to 15 k. V when used in star connection) Current: Max. 160 A Low losses < 0. 2 W/kvar Internal fuses Discharge resistors: Built-in, standard residual voltage 75 V - 10 min. (option for 50 V - 5 min. ) Dielectric: Dielectric Fluid: : Bushings: Terminals: Mounting brackets: Temperature range: Polypropylene film Jarylec C 101 3 in porcelain M 16 x 20 One per side -25°C to +50°C (-40°C to +55°C on request)

PROPIVAR NG - Internal fuses Confidential Property of Schneider Electric | Page 15

Protection with internal fuse For single-phase and double-phase capacitors only Capacitor WITH internal fuse > Immediate disconnection of the element short-circuited > Material and maintenance cost reduction > Capacitor can stay in service (lifetime increased) > Continuity of service ensured Capacitor WITHOUT internal fuse > > After the first failure, rapid failure of other elements Operation of external fuse Capacitor must be replaced Capacitor bank out of service > Possibility to program site maintenance High availability High reliability Low operation cost Reduced availability Higher operation cost

PROPIVAR NG range – Internal fuses Capacitor WITH internal fuses [Single-phase and double-phase only] Before failure Discharge of energy in parallel on the element that failed Low over-voltage – 1. 07 Un: > Immediate disconnection of the element short-circuited > Capacitor stay in service > After operation of the fuse Continuity of service ensured > Material and maintenance cost reduction

PROPIVAR NG range – No internal fuses Capacitor WITHOUT internal fuses After failure of one element Before failure High over-voltage – 1. 33 Un: > Rapid failure of other elements > Operation of external fuse > Capacitor must be replaced > Capacitor bank out of service

Unbalance protection • Made by mean of 1 CT + relay x x x In > • NB : Overload and short-circuit protection must also be ensured at the feeder level.

MV Capacitor units - Manufacturing Confidential Property of Schneider Electric | Page 20

Power Quality factory in France Paris Geneva Pringy

Manufacturing process • Brand new manufacturing line • Based on Lean Manufacturing rules and 40 years experience • Controlled atmosphere (dust, humidity, temperature) manufacturing line according to ISO 14644 -1 Class level 8 • New automatic TIG welding cell to guarantee welding quality • Advanced impregnation process • 100% of the products are inspected by our quality department Winding machine Raw boxes Assembly line Welding machine

Propivar NG range: Key value "Safety" [ Fully compliant with standards ] • Propivar NG capacitor fully complies with… • IEC 60871 -1, -2, and -4 • NEMA CP-1 • AS 2897 • Others standards on request

Propivar NG range: Key value "Reliability" [ 100% factory tested ] • Propivar NG capacitors are tested as per IEC 60871 standard requirements: • Capacitance measurement • Losses angle (tg ) measurement • Sealing test • Test of Internal discharge device • Voltage test between terminals • Current test between terminals and the case Propivar NG capacitors standard documents: • Routine test certificates (French / English) and User manual (French / English) Extremely high reliability

Propivar NG range: Key value "Green" [ Environmental safe ] • Non-PCB dielectric fluid, with no impact on environment (biodegradable). • Propivar NG complies with ROHS directive, and complies with in REACH. • Schneider Electric PROPIVAR NG capacitors manufacturing plant is certified ISO 14001 (environment).

Quizz Confidential Property of Schneider Electric | Page 26

True/False PROPIVAR NG means PROPIVAR “Natural Gas”? E U R T FAL SE

True/False No, NG means “New Generation? FAL SE

True/False PROPIVAR NG capacitor units have epoxy type bushings? E U R T FAL SE

True/False No, PROPIVAR NG capacitor units have porcelain type bushings FAL SE

True/False PROPIVAR NG dielectric liquid is PCB free? E U R T FAL SE

True/False Yes, PROPIVAR NG dielectric liquid is PCB free. E U R T

True/False To build a double star connection we need at least 6 single phase units? E U R T FAL SE

True/False Yes, to build a double star connection we need at least 6 single phase units. We can also use 9, 12, 15, … and more single phase units E U R T

True/False We can connect 6 three-phase delta connected capacitors in parallel? E U R T FAL SE

True/False No, we limit to 3 the number of three-phase delta capacitors in parallel. FAL SE

True/False We can have internal fuses in 3–phase delta connected capacitor units? E U R T FAL SE

True/False No, internal fuses is only applicable to single or double phase capacitor units? FAL SE

True/False IEC 60871 - Part 2 refers to environmental conditions for MV capacitors? E U R T FAL SE

True/False No, IEC 60871 - Part 2 is related to special ageing test. PROPIVAR NG complies with this standard. FAL SE

True/False 3 phase, delta connected capacitors must be protected by HRC fuses? E U R T FAL SE

True/False Yes, 3 phase, delta connected capacitors must be protected by HRC fuses. The bank must also have an upstream protection against overvoltage and overcurrent? E U R T

True/False Single phase PROPIVAR NG capacitor units can be used in HV banks (220 k. V for example) E U R T FAL SE

True/False Yes, we connect several single phase PROPIVAR NG capacitor units for HV applications E U R T

True/False Three phase PROPIVAR NG capacitor units can be used in HV banks (220 k. V for example) E U R T FAL SE

True/False No, we cannot connect three phase units in series … FAL SE

True/False Double phase PROPIVAR NG capacitor units can be used in HV banks (220 k. V for example) E U R T FAL SE

True/False No, we cannot connect double phase units in series … FAL SE