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Vishay ESTA

Vishay EsTa

Vishay ESTA is the world’s only manufacturer to offer a complete range of power capacitors. 
These cost-effective devices for harmonic control, energy savings, and voltage stabilization 
are highly reliable and environmentally safe, and can be used under the most rugged  
conditions. Vishay ESTA power capacitors address a wide range of energy-generation  
applications. Their “green” applications include energy generation in on- and off-shore wind 
turbines and solar power plants. 
Vishay ESTA power capacitors are used in energy transmission and distribution in high, 
medium, and low-voltage networks to improve network quality. Their efficient operation 
helps promote CO

2

 reduction as well as reducing losses in long-distance HVDC  

transmissions. The power capacitors are also used for RFI filters and voltage and  
frequency converters in traction and industrial drives. 
Vishay ESTA capacitors are manufactured with the highest quality standards and come 
complete and ready to use for all applications.

REsouRcEs

• For technical questions contact 

esta@vishay.com

THIS DOCumEnT IS SubjECT TO CHAngE wITHOuT nOTICE. THE PRODuCTS DESCRIbED HEREIn AnD THIS DOCumEnT ARE SubjECT TO 
SPECIFIC DISCLAImERS, SET FORTH AT 

www.vishay.com/doc?91000

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Vishay EsTa Power capacitors solutions

Semikron Bare Die - Authorized

 Distibutor

DISTRIBUTOR:

ES COMPONENTS

108 PRATTS JUNCTION ROAD

 

STERLING, MA 01564 PHONE: 

(978)422-7641

FAX: (978)422-0011

www.escomponents.com

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Vishay ESTA

Furnace capacitors

applications

•  Static power capacitors for inductive heating plant

compensation

standards

•  En 60110/1 and 2
•  IEC  60110/1

Ranges

• mains frequency: 230 V to 3000 V, 50/60 Hz up to

800 kvar per unit

• medium frequency: 250 V to 4000 V, 150 Hz to

100 000 Hz, up to 10 000 kvar per unit

Benefits

• Compact construction
• Each product designed to customer specifications
• Can operate in extreme environmental conditions
• Easy to integrate into overall system concepts
• Low inductivity

Types of cooling

• natural cooling
• Forced cooling
• water cooling

THIS DOCumEnT IS SubjECT TO CHAngE wITHOuT nOTICE. THE PRODuCTS DESCRIbED HEREIn AnD THIS DOCumEnT ARE SubjECT TO 
SPECIFIC DISCLAImERS, SET FORTH AT 

www.vishay.com/doc?91000

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Vishay ESTA

Power Electronic capacitors

applications

• Static converters for:

 

– Heavy-haul locomotives

 

– Light local trains

 

– Trolley busses

 

– Trams/streetcars

 

– Industrial converters

• DC supply equipment
• High-voltage testing systems
• Impulse discharge energy

standards

• IEC 61071
• IEC 61881
• Customer specifications

Ranges

• AC up to 24 kV per unit
• DC up to 125 kV and 15 kj per unit
• Rectangular and tubular designs for casings

Benefits

• All appropriate capacitor technologies available to ensure optimum suitability to specific applications
• Highest flexibility in mechanical designs, including designs for low quantities

THIS DOCumEnT IS SubjECT TO CHAngE wITHOuT nOTICE. THE PRODuCTS DESCRIbED HEREIn AnD THIS DOCumEnT ARE SubjECT TO 
SPECIFIC DISCLAImERS, SET FORTH AT 

www.vishay.com/doc?91000

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Vishay ESTA

Low-Voltage Power capacitors

applications

•   Individual and group fixed compensation
•  Controlled central compensation
•  Filter circuits for mains systems with harmonics

standards

•  En 60831/1 and 2
•  IEC 60831/1 and 2

Ranges

•  230 V to 1000 V, 50/60 Hz
•  2.5 kvar to 56.2 kvar in cylindrical/triangular aluminum casing; 

up to 500 kvar in welded rectangular steel casing

Benefits

•  Low loss, self-healing mkP technology
•  Compact design
•  Excellent heat dissipation
•  biodegradable, vegetable-based, non-PCb, non-toxic filling agent, or dry version available
•  burst-proof as confirmed by independent international inspection centers such as uL/uLc
•  Highest overcurrent and inrush current capabilities
•  Life expectancy of > 150 000 operating hours with highly consistent capacitance values
•  Custom designs available

THIS DOCumEnT IS SubjECT TO CHAngE wITHOuT nOTICE. THE PRODuCTS DESCRIbED HEREIn AnD THIS DOCumEnT ARE SubjECT TO 
SPECIFIC DISCLAImERS, SET FORTH AT 

www.vishay.com/doc?91000

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Vishay ESTA

Power Factor controllers

applications

• manual and automatic control of central

power factor correction equipment in
low-voltage plants and special types for
medium-voltage applications

standards

• IEC 60664-1
• IEC/En 61010-1
• IEC/En 61326
• CE-Certification

Ranges

• 6- or 12-step versions
• Operating voltage: 230 or 120 V; 50 or 60 Hz
• maximum measuring voltage range: 90 to 690 V, stepless

Benefits

• High contrast backlit display for good reading even in poor lighting conditions
• Over-temperature switch-off (model ESTAmat PFC-n)
• Easy mounting with small flat springs
• Automatic self-setting (model ESTAmat PFC-n)
• 4-quadrant operation means trouble-free service in generator mode
• Optimized switching performance
• Constant display of actual power factor and energized steps
• Display of cos 

φ

, active, reactive, and apparent power

• Additional step data (model ESTAmat PFC-n)
• Alarm functions

THIS DOCumEnT IS SubjECT TO CHAngE wITHOuT nOTICE. THE PRODuCTS DESCRIbED HEREIn AnD THIS DOCumEnT ARE SubjECT TO 
SPECIFIC DISCLAImERS, SET FORTH AT 

www.vishay.com/doc?91000

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Vishay ESTA

high-Voltage Power capacitors

applications

• Shunt capacitors
• Harmonic filters
• Series capacitors
• Capacitors for SVC (Static Var Compensator)
• AC-capacitors for HVDC transmission
• DC-capacitors for HVDC transmission
• Surge suppressors and RC circuits

standards

• En 60871
• IEC 60871
• IEC 60143
• Other standards upon request

Ranges

• Individual capacitors from 660 V to 24 kV, up to 900 kvar
• Capacitor banks up to 800 kV, any output

Benefits

• Voltage and output rating can be matched precisely to customer specifications
• Element fuses or fuseless technologies for high operating reliability
• Flexible plant design with specially designed racks
• Vishay ESTA unbalance protection

THIS DOCumEnT IS SubjECT TO CHAngE wITHOuT nOTICE. THE PRODuCTS DESCRIbED HEREIn AnD THIS DOCumEnT ARE SubjECT TO 
SPECIFIC DISCLAImERS, SET FORTH AT 

www.vishay.com/doc?91000

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Vishay ESTA

unbalance Protection Relays

applications

The microprocessor-based ESTAsym mD and CPR capacitor protection relays use 
a versatile integrated current measuring multifunction relay design to enable the 
protection of medium and high voltage capacitor banks. using FFT techniques, the 
ESTAsym mD calculates the fundamental and harmonic currents from measured line 
and unbalance currents, and uses these values to implement individual protection 
functions.

standards

•  En 50178, Class II
•  En 61010-1
•  En 50081-1
•  En 50082-2
•  CE-Certification

Ranges

•  100 to 240 VAC, 50/60 Hz or 100 to 375 VDC
•  1 A to 5 A

Benefits

The ESTAsym capacitor protection relays are particularly appropriate for capacitor banks connected in double star and 
bridge circuit configurations.

The following protective functions are provided:

•  Capacitor unbalance protection
•  In addition for ESTAsym mD:
•  Line current unbalance protection
•  Overvoltage protection
•  Overheating protection
•  ground fault protection
•  Overcurrent protection
•  undercurrent protection
•  Capacitor bank discharge timer
The ESTAsym mD stores all data, including date and time information, in a report file. The included PC software provides 
you with convenient access to this data.

THIS DOCumEnT IS SubjECT TO CHAngE wITHOuT nOTICE. THE PRODuCTS DESCRIbED HEREIn AnD THIS DOCumEnT ARE SubjECT TO 
SPECIFIC DISCLAImERS, SET FORTH AT 

www.vishay.com/doc?91000

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Vishay ESTA

ThE amERicas

uniTEd sTaTEs

VISHAy AmERICAS 
P.O. bOX 3700
mOORESVILLE, nC 28117 
unITED STATES
PH: +1-704-663-1870 
FAX: +1-704-663-1870

asia

singaPoRE

VISHAy InTERTECHnOLOgy ASIA PTE LTD.
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SIngAPORE 528886 
PH: +65-6788-6668 
FAX: +65-6788-0988

P.R. china

VISHAy CHInA CO., LTD.
15D, Sun TOng InFOPORT PLAzA
55 HuAI HAI wEST ROAD
SHAngHAI 200030
P.R. CHInA
PH: +86-21-5258 5000
FAX: +86-21-5258 7979

jaPan

VISHAy jAPAn CO., LTD.
SHIbuyA PRESTIgE bLDg. 4F 
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SHIbuyA-ku
TOkyO 150-0002
jAPAn
PH: +81-3-5466-7150
FAX: +81-3-5466-7160

EuRoPE

gERmany

VISHAy ELECTROnIC gmbH
ESTA CAPACITORS DIVISIOn
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gERmAny 
PH: +49-871-86-0 
FAX: +49-871-86-25-06

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PH: +44-191-516-8584
FAX: +44-191-549-9556

wORLDwIDE SALES COnTACTS

PRODuCTS

Induction Heating Capacitors
Power Electronic Capacitors
Low Voltage Capacitors
Power Factor Controllers
High Voltage Capacitors

THIS DOCumEnT IS SubjECT TO CHAngE wITHOuT nOTICE. THE PRODuCTS DESCRIbED HEREIn AnD THIS DOCumEnT ARE SubjECT TO 
SPECIFIC DISCLAImERS, SET FORTH AT 

www.vishay.com/doc?91000

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V I S H Ay   I n T E R T E C H n O L O gy,   I n C .

ES COMPONENTS

108 PRATTS JUNCTION ROAD STERLING, MA 01564 PHONE: 

(978)422-7641

FAX: (978)422-0011

www.escomponents.com

DISTRIBUTOR: