HERTNER Repair Services India
Hertner Electric AG is a Swiss specialist in industrial power distribution, battery charging systems, and uninterruptible power supply (UPS) solutions for demanding manufacturing and logistics environments. With over 50 years of precision engineering, Hertner equipment powers critical operations across European automotive, pharmaceutical, and semiconductor sectors. Their presence in Indian heavy industries — particularly in automotive, chemicals, and textile manufacturing — has grown significantly since 2010, though servicing expertise remains limited.
Hertner Electric AG is a Swiss specialist in industrial power distribution, battery charging systems, and uninterruptible power supply (UPS) solutions for demanding manufacturing and logistics environments. With over 50 years of precision engineering, Hertner equipment powers critical operations across European automotive, pharmaceutical, and semiconductor sectors. Their presence in Indian heavy industries — particularly in automotive, chemicals, and textile manufacturing — has grown significantly since 2010, though servicing expertise remains limited.
Synchronics Electronics repairs Hertner battery chargers, UPS systems, DC power supplies, and industrial distribution cabinets with specialist knowledge of their proprietary control architectures and safety interlocks. Our 180+ engineers have restored hundreds of Hertner systems across Indian manufacturing plants, refineries, and data centres. We maintain critical spare component stock and provide fast turnaround diagnostics for Hertner's complex multi-module charging systems that many Indian service centres cannot replicate.
Hertner UPS and precision DC power system specialists serving Indian heavy industry.
HERTNER Product Lines We Repair
Our engineers are trained on the full HERTNER product range. Below are the major product families we service.
Hertner Industrial Battery Chargers
High-frequency, three-phase industrial chargers (12V-600V, 20A-5000A output) for lead-acid, lithium, and NiCd battery banks in forklifts, cranes, and backup power systems. Common issues include rectifier module failure, thermal shutdown loops, and communication bus faults.
Hertner Power Distribution Modules
Modular DC distribution and protection systems for industrial automation cabinets. Built-in monitoring, circuit isolation, and load-sharing capabilities. Prone to contactor pitting, relay chatter, and microprocessor faults under voltage transients.
Hertner UPS and Emergency Power Supplies
Static UPS systems for critical process control and safety systems in food processing, chemicals, and automotive lines. Inverter failures, capacitor aging, and battery management board (BMB) communication loss are frequent repair calls.
Hertner Battery Management Systems
Microprocessor-based monitoring and equalization units for large stationary battery banks. Monitor cell voltage, temperature, and health. DSP algorithm drift and CAN/RS485 node dropout are common faults.
Hertner Rectifier Modules
IGBT-based rectifier units (12V-48V, 10kW-100kW) used in telecom backup, industrial charging, and distributed power architectures. IGBT gate driver failures and snubber network degradation cause thermal runaway.
Why Choose Synchronics for HERTNER 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 HERTNER 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 HERTNER Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in HERTNER equipment arriving at our workshop.
- ✓Rectifier module thermal shutdown under load — Hertner chargers use paralleled IGBT rectifier cards with active current-sharing. Heat-sink compound aging, thermistor sensor drift, or failed cooling fan cause false over-temperature cutoff and nuisance shutdown cycles.
- ✓No charging output — green LED on, no DC voltage — Hertner HES and SMART CHARGE units use a two-stage startup handshake. Microprocessor firmware timeout, relay coil open-circuit, or shorted output contactor prevents the boost stage firing. Battery sensing line open also triggers safety lockout.
- ✓Battery equalization failure — cells drift out of balance — Hertner BMS-PRO units use PWM equalization circuits per string. Open-circuit PWM driver transistors, degraded capacitors in the pulse network, or DSP calibration loss cause some cell groups to charge faster than others, leading to overcharge and early battery failure.
- ✓Communication error — charger offline on network — Hertner MULTICHARGER and modern HES units communicate via CAN or RS485. Isolation transformer failure, opto-coupler burnout on the transceiver card, or corrupted node ID EEPROM cause the unit to drop off the supervision network and stop charging.
- ✓Inverter output unstable — UPS voltage droops or oscillates — Hertner HP SERIES and SAFEGUARD UPS systems use PWM inverters with feedback regulation. Failing film capacitors in the output LC filter, unstable feedback amplifier, or ADC circuit drift cause voltage regulation loss and inverter instability under load.
- ✓Contactor chatter and arcing — visible pitting on contacts — Hertner PDM and distribution modules handle high switching currents in industrial environments. Inductive load transients, inadequate snubber networks, or worn out contactor springs cause contact bounce and electrical arcing, leading to contact pitting and eventual open circuit.
How We Repair Your HERTNER 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 HERTNER Equipment
We serve plant maintenance teams across all major industries where HERTNER automation is deployed.
Frequently Asked Questions — HERTNER Repairs
Do you repair Hertner equipment anywhere in India?+
Yes. Synchronics repairs the full Hertner product range — battery chargers, UPS systems, DC power supplies, rectifier modules, and battery management systems. We offer PAN India door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Bangalore, and all other cities. All repairs are performed at our Synchronics facility in Vadodara, Gujarat, with guaranteed turnaround of 7-10 working days for most faults.
How do you diagnose Hertner chargers that won't output voltage?+
Synchronics uses Hertner service diagnostics software and multi-meter protocols to test each stage: input rectification, boost converter, output contactor, and control microprocessor handshake. We check battery sense voltage, thermistor readings, and relay coil resistance. If the microprocessor is locked in fault state, we upload latest firmware via the service serial port and clear error codes. Most 'no output' faults are resolved in 2-3 days.
Can you repair Hertner UPS systems with failed capacitors and inverter modules?+
Yes. Hertner UPS inverters frequently suffer from aging film capacitors in the LC output filter, which degrade after 5-8 years in Indian ambient heat and humidity. Synchronics performs full capacitor bank ESR testing, replaces failed units with equivalent or better-rated components, and re-calibrates the inverter feedback loop. We then load-test at 50%, 75%, and 100% of rated power and certify voltage stability within +/- 2% before return.
What is your pricing model for Hertner repairs — time and materials or fixed rate?+
Synchronics quotes fixed rates for standard Hertner faults (thermal shutdown, contactor replacement, capacitor bank overhaul) based on the product family. Complex faults (microprocessor corruption, multi-module synchronization loss) are quoted on time-and-materials basis after diagnostic assessment. All spare parts (Hertner genuine or equivalent) are charged separately at cost plus 15% markup. Request a free diagnostic quote by emailing your serial number and fault description to our support team.
Do you stock Hertner spare parts, or must I source them separately?+
Synchronics maintains in-stock inventory of common Hertner spare parts: rectifier IGBT modules, thermistors, relay coils, isolation transformers, and film capacitor sets for HES, MULTICHARGER, BMS-PRO, and UPS series. For less common items (custom control boards, firmware patches), we source directly from Hertner distributors in Europe with a lead time of 10-14 days. All parts are tested before installation to guarantee compatibility and performance.
How do I send my HERTNER 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 HERTNER 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 HERTNER 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 HERTNER 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.
HERTNER Repair Catalog
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Don't See Your HERTNER Model Listed?
We repair the full range of HERTNER 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