IMPORT SUBSTITUTE CAPACITORS · INDIGENISATION
Import-substitute capacitors for special applications.
Many special-application capacitors - in defence, research, and heavy industry - have historically been imported, leaving users exposed to long lead times, high cost, currency risk, and uncertain supply. Marxelec builds indigenous replacements for these imported units: capacitors matched to the electrical rating and the physical dimensions of the original, so they fit and perform as a direct replacement.
Because Marxelec designs and manufactures the full construction in-house - winding in a Class-100 clean room, with a bi-axially oriented polypropylene (BOPP) dielectric, 99% purity aluminium foil, and NPCB oil - a replacement can be developed from a sample, a nameplate, or a specification, without dependence on the original manufacturer. The company's founder has developed special-application capacitors for Indian research and defence organisations over a 37-year career, and that experience underpins the import-substitution work.
Where an imported capacitor is expensive, slow to source, or no longer supported, an indigenous equivalent removes that dependency - often at a lower total cost of ownership.
Import Substitution Work
Process
Assess
Original capacitor reviewed from a sample, nameplate, drawing, or specification.
Engineer
Electrical rating and physical envelope reverse-engineered to a manufacturable design.
Build
Manufactured in-house on the BOPP / all-film platform, wound in a Class-100 clean room.
Test
Verified against the target specification before despatch.
Replace
Supplied as a dimensional and electrical match for direct replacement
Specification Envelope
whatever the imported unit is, it likely sits inside one of these envelopes.
Product family
Indicative envelope
Energy storage / discharge (ESC)
Up to 1000 µF · 160 kV DC · >500 kA
High voltage DC / filter
Up to 5000 µF · 160 kV DC
HT / HV power / PF
Units to 750 kVAr, 24 kV; banks to 20 MVAr, 110 kV
LT / LV power / PF
Units to 100 kVAr, 1 kV; banks to 1000 kVAr
Surge / RC
3.3-36 kV systems · impulse to 190 kVp
Water-cooled MF/HF
Up to 7200 kVAr · 4.4 kV · 50 kHz
Common construction across all: BOPP dielectric · 99% aluminium foil · NPCB oil · Class-100 clean-room winding.
Applications this capacitor is built for.
Defence & research
Special-application capacitors for research and defence organisations
Steel & metal industries
Furnace and heavy-industry capacitors
High voltage test & metrology
Test-lab and measurement capacitors
Power & process plants
PF, filter, and surge capacitors
Legacy / obsolete units
Replacements for discontinued imported capacitors
Long-lead-time imports
Domestic supply where import lead times are prohibitive
Built to the required form factors.
Every unit is built to the customer's mechanical specification. Container, shape, and termination are confirmed at order stage. Below - the standard configurations we build.
Tested against the application inspection plan.
In the applications a unit goes into, a sampling failure is a deployed failure. Every unit ships with a signed test certificate listing the measured value of each test below.
Capacitance & dissipation factor
Verified against the target specification.
Voltage withstand
Withstand test per the target rating [TBC].
Application-specific test
E.g. life test (ESC), impulse (surge), cooling test (water-cooled) - per the family being matched.
Dimensional
Verified against the original envelope.
Insulation resistance
IR at rated voltage.
Related products.
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Tell engineering
what you are building.
Share the details you have: voltage, capacitance, frequency, current, duty cycle, cooling method, application context, drawing, existing part number, nameplate photograph or failed sample details. The first message does not need to be complete. It needs to start the technical review. Our team will respond within two working days.
Marxelec Energy Pvt. Ltd.
Plot No. L-49, MIDC Kupwad
Sangli Miraj Kupwad
Sangli, Maharashtra 416436
India
response@marxelec.com
+91 91686 18452