EPCO Repair Services India
EPCO (Electro-Precis Company) is a US-based manufacturer of industrial power electronics, motor control systems, and switchgear solutions serving heavy industries globally since 1947. EPCO equipment is widely deployed across Indian manufacturing plants, steel mills, cement facilities, and textile operations. Their robust designs and modular architecture make them reliable for demanding tropical and high-dust environments typical of Indian industrial zones.
EPCO (Electro-Precis Company) is a US-based manufacturer of industrial power electronics, motor control systems, and switchgear solutions serving heavy industries globally since 1947. EPCO equipment is widely deployed across Indian manufacturing plants, steel mills, cement facilities, and textile operations. Their robust designs and modular architecture make them reliable for demanding tropical and high-dust environments typical of Indian industrial zones.
Synchronics Electronics has repaired EPCO industrial electronics for 25+ years, with deep expertise in their switchgear, power controllers, soft-starters, and custom control modules. Our 180+ engineers handle EPCO fault diagnosis, component-level repair, PCB rework, and full system commissioning. We maintain spare component stocks and offer 48-hour turnaround on most EPCO repairs, ensuring minimal downtime for your production lines across India.
25 years repairing EPCO switchgear, soft-starters, and motor control modules across Indian industrial sectors.
EPCO Product Lines We Repair
Our engineers are trained on the full EPCO product range. Below are the major product families we service.
EPCO Soft-Starters and VFD Controllers
Three-phase soft-start units and variable frequency drive controllers for AC induction motors. Common issues include thyristor gate firing failures, thermal overload nuisance trips, and loss of phase detection leading to motor stalling in cement and steel rolling mills.
EPCO Power Factor Correction (PFC) Modules
Automatic capacitor switching units for reactive power compensation in industrial plants. Typical faults include contactor coil burnout, capacitor bank failure, and analog control card drift causing poor power factor performance in textile and sugar facilities.
EPCO Medium Voltage Switchgear (MVSG)
Vacuum and SF6-insulated switchgear for distribution networks up to 33 kV. Repair demands include vacuum interrupter degradation, control circuit board failures, mechanical trip mechanism stiffness, and microprocessor-based protection relay faults in power distribution substations.
EPCO Electronic Load Controllers (ELC)
Genset load control and synchronization equipment for isolated industrial power systems and hydroelectric installations. Common failures include frequency sensing card malfunction, load shedding relay chatter, and synchronization oscillation in microcontroller firmware.
EPCO Soft Starters with Embedded Bypass
Integrated soft-starters with internal bypass contactors for reduced thermal losses during steady-state operation. Typical issues include bypass contactor timing failures, ramp-down distortion, and loss of 4-20 mA feedback signal to SCADA systems in large pump and compressor applications.
EPCO DC Drive Controllers and Rectifiers
Silicon-controlled rectifier (SCR) and diode bridge modules for DC motor speed and torque control. Frequent faults include SCR gate circuit aging, ripple filter capacitor drying, armature current loop instability, and thyristor commutation failure in rolling mill and printing machinery.
Why Choose Synchronics for EPCO Repairs?
PCB-Level Expertise
We repair down to the component level — not just swap boards. Our engineers identify root causes, replace failed IGBTs, capacitors, processors, and gate drivers on EPCO equipment.
Fast Turnaround
Standard 7–10 working days. Express 3–5 days available for critical breakdowns. Emergency same-day/next-day service for unplanned downtime.
6-Month Warranty
Every repaired unit ships with a 6-month comprehensive warranty on parts and labour. Our repair success rate is over 94% across all brands.
All-India Service
Couriered repairs accepted from any city in India. Doorstep pickup available in Vadodara, Mumbai, Pune, Ahmedabad, Surat, Chennai, and more.
Common EPCO Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in EPCO equipment arriving at our workshop.
- ✓Thyristor gate drive circuit failure — EPCO soft-starters use discrete gate drive transformers and optocoupler networks. Prolonged humidity exposure in coastal Indian plants causes PCB corrosion and transformer insulation breakdown, preventing proper thyristor firing pulses.
- ✓Thermal overload nuisance tripping — EPCO soft-starters employ bimetallic thermal strips and NTC thermistor networks that drift with age and ambient temperature cycling. Incorrect ramp time settings also cause transient overcurrent, aggravating nuisance trips in textile spinning and cement kiln drives.
- ✓Loss of phase detection failure — EPCO three-phase sensing circuits rely on precision voltage divider networks and comparator ICs. Dust ingress, contactor arcing transients, and supply harmonics degrade phase-loss detection accuracy in Indian power grids with significant voltage imbalance and harmonic distortion.
- ✓Vacuum interrupter pressure loss — EPCO medium-voltage switchgear uses hermetically sealed vacuum bottles rated for 30+ years. Contamination particles, thermal cycling, and bellows fatigue from frequent switching degrade vacuum integrity, reducing interrupt capability below fault rating in high-duty distribution applications.
- ✓Soft-starter bypass contactor timing mismatch — EPCO soft-starters with embedded bypass rely on precise time delays (10-50 ms) to transfer load from solid-state to mechanical bypass without voltage transients. Aging mechanical contacts and microcontroller clock drift cause bypass closure during soft-start ramp, creating phase shifts and torque ripple.
- ✓PFC capacitor bank isolation failure — EPCO automatic PFC modules switch high-voltage capacitor banks via contactors and electromechanical relays. Moisture ingress, dielectric stress, and harmonic overloads degrade capacitor insulation and isolation contactor coil coatings, causing phase-to-phase leakage and unplanned disconnection during peak reactive load periods.
How We Repair Your EPCO Unit
Receive & Log
Your unit is logged into our tracking system with a unique job number. You receive WhatsApp / email updates at every stage.
Fault Diagnosis
Board-level diagnosis using oscilloscopes, LCR meters, and thermal cameras. Root cause identified before any repair begins.
Component Repair
Faulty ICs, capacitors, MOSFETs, IGBTs, and gate drivers replaced with genuine or equivalent-spec components.
Full-Load Test
Unit tested under rated load with original or equivalent motor. All parameters verified. 6-month warranty issued.
Industries Using EPCO Equipment
We serve plant maintenance teams across all major industries where EPCO automation is deployed.
Frequently Asked Questions — EPCO Repairs
Do you repair EPCO equipment anywhere in India?+
Yes, absolutely. Synchronics repairs the complete EPCO industrial electronics portfolio — soft-starters, motor controllers, PFC modules, medium-voltage switchgear, and custom control boards. We offer PAN-India door pickup and delivery from all major metros: Mumbai, Delhi, Pune, Bangalore, Chennai, Hyderabad, Ahmedabad, Kolkata, and industrial clusters. Everything is serviced at our 25,000 sq ft facility in Vadodara, Gujarat, with 48-hour turnaround on most repairs.
What is the typical repair turnaround for EPCO soft-starters and motor controllers?+
For EPCO soft-starters and VFD controllers, Synchronics typically diagnoses and completes repair within 3-5 working days, including spare parts sourcing if needed. Rush turnaround (24-48 hours) is available for critical mill and production applications. We test soft-starters at full rated load using precision motor simulators and provide load-test certificates before shipment.
Do you stock spare EPCO components and modules?+
Yes. Synchronics maintains strategic stocks of common EPCO gate drive modules, thyristor arrays, capacitor banks, contactors, and microprocessor boards. For obsolete or hard-to-source items, we work directly with EPCO distributors and authorized suppliers across Europe and the US to minimize your production downtime. Lead times are typically 2-3 weeks for specialized components.
Can you repair EPCO medium-voltage switchgear and vacuum interrupters?+
Yes, we specialize in EPCO MVSG repair — including vacuum interrupter cartridge replacement, control circuit board rework, protective relay calibration, and mechanical trip mechanism refurbishment. We perform high-voltage testing (1.2/50 µs impulse, 1-minute power frequency withstand) to certify safety and interrupt ratings before return. Commissioning support for installation in your distribution systems is available.
How do I troubleshoot EPCO soft-starter fault codes and error messages?+
EPCO soft-starters display error codes via LED indicators or integrated 7-segment displays (e.g., '12' = phase loss, '34' = thermal overload, '56' = gate drive failure). Synchronics provides detailed fault code lookup tables and troubleshooting guides with every repair. For remote diagnostics, contact our support team with the error code, supply voltage, and load motor data — we can advise on likely root causes and whether repair or replacement is warranted.
How do I send my EPCO unit for repair?+
Pack the unit securely and courier it to our Vadodara workshop. Include a note with the fault description and your contact details. We will log it into our system and WhatsApp you a job number within 24 hours of receipt. Doorstep pickup is available in Vadodara, Ahmedabad, Surat, Mumbai, and Pune.
What is the cost of repairing a EPCO drive or PLC?+
Repair cost depends on the model and the fault. We offer a free diagnosis — once we identify the fault, we provide a fixed quotation before proceeding. Typical repairs cost 20–40% of the new unit price. We will never repair without your approval.
What warranty do you provide on EPCO repairs?+
All repaired units carry a 6-month comprehensive warranty covering the same fault and related issues. If the fault recurs within the warranty period, we repair it free of cost.
Do you provide a no-fix, no-fee guarantee?+
Yes. If we cannot repair your EPCO unit after diagnosis, you pay only the diagnosis fee (₹500–₹1,500 depending on the product). The unit is returned to you at no additional charge.
EPCO Repair Catalog
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Don't See Your EPCO Model Listed?
We repair the full range of EPCO industrial electronics — even if the specific model is not yet in our catalog. Send us the unit details and we'll confirm repairability within 24 hours.
Free evaluation • 6-month warranty • PAN India pickup
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Back in Action — Fast
Send us your faulty industrial electronics. Our engineers will diagnose it and provide a detailed quote within 24 hours — with no obligation to proceed.
Free Evaluation
No obligation
48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service