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> Reactive energy compensation > Low
voltage capacitors and capacitor banks >
Technology
and range of capacitors - ALPIVAR >
Electrical characteristics
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> Electrical characteristics
> ALPIVAR range
Electrical characteristics
INTERNAL PROTECTION
This special manufacturing technique avoids blowing the capacitor due to
overvoltages. The dielectric is perforated when overvoltage occurs, causing
discharges which vaporize the metal around the short circuit and instantaneously
restore electrical insulation
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Electrical fuse: one per coil
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Over pressure disconnecting
device: if an electrical fault cannot be overcome by the self-healing dielectric or the electrical fuse, gas
is emitted, deforming a membrane and taking the defective coil out of the circuit.
These three protection mechanisms, associated with the under vacuum coated coils (technique patented by ALPES TECHNOLOGIES),
form a highly advanced unit.
DISCHARGE RESISTORS
The discharge resistors enable the unit to be discharged in compliance with
applicable standards. They are fitted externally on the connection terminals to
enable visual inspection.
LOSS FACTOR
Alpivar capacitors have a loss factor of less than 0,1 x 10-3. This leads to a total
wattage consumption of less than 0.3 W per kvar including the discharge resistors.
CAPACITANCE
Tolerance on the capacitance value: ± 5%
Our manufacturing process, which avoids any air inclusions in the coils, ensures that the capacitance remains exceptionally stable
throughout the service life of the Alpivar capacitor.
MAX. PERMISSIBLE VOLTAGE 1.18 Un continuous (24 h/24)
MAX. PERMISSIBLE CURRENT (continuously)
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standard type: 1.5 In
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H type: 2 In
INSULATION CLASS
STANDARDS
Alpivar capacitors comply with the following standards:
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French standard: NF C54 108 and 109
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European standard: EN 60831-1 and 2
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International standard: IEC 60831-1 and 2
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Canadian standard: CSA 22-2 No. 190
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US standard: UL 810
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end-of-life behaviour tests passed successfully in EDF and LCIE laboratories
TEMPERATURE CLASS
Alpivar capacitors are designed for a standard temperature rating of -40 / +55°C.
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maximum temperature : 55°C
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average over 24 hours : 45°C
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annual average : 35°C
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other temperature classes on request
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SUMMARY OF TECHNICAL CHARACTERISTICS
• Double insulation or class 2: no earthing needed, provides total safety for personnel.
• Totally dry (no added oil): no risk of leakage or fire, may be installed in all positions.
• Self-extinguishing polyurethane resin casing: highly robust, compact,
non-corrosive, outdoor installation possible on request.
• Monobloc or modular: with copper connections between the various
elements (risk of corrosion, loosening or overheating totally eliminated).
• Coils coated under vacuum (specific to Alpivar): the absence of air and
humidity around the coils guarantees Alpivar’s high quality.
• Internal electrical protection for each coil using:
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Low
voltage summary
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