A UPS that has never been tested is a UPS you cannot trust. This sounds dramatic, but it reflects a simple truth: UPS batteries degrade silently, capacitors dry out, and connection terminals corrode — none of which triggers an alarm until the moment you actually need the UPS to perform.
An AMC — Annual Maintenance Contract — is the structured programme that ensures your UPS is tested, maintained, and verified to perform when needed. This guide explains what a good AMC looks like, what it costs, and how to evaluate AMC providers.
What is UPS AMC?
A UPS Annual Maintenance Contract is a service agreement between a UPS user and a maintenance provider. In exchange for a fixed annual fee, the provider delivers scheduled preventive maintenance visits, emergency breakdown support, and (in comprehensive plans) parts and battery replacement as needed.
The key distinction in India's market is between non-comprehensive AMC (labour only) and comprehensive AMC (labour + parts + batteries). The right type depends on the age of the equipment and your risk tolerance.
What a Good AMC Includes
Not all AMC contracts are equal. Here's what a quality UPS AMC should include:
Quarterly or biannual site visits during which the engineer performs a comprehensive inspection: visual check, thermal imaging of connections, battery voltage and impedance testing, load measurement, fan and capacitor inspection, firmware verification, and a full report.
Individual testing of each battery cell or block using a battery analyser. This measures the battery's internal conductance — a declining figure indicates reduced capacity and approaching end of life. This gives you 3–6 months of advance warning before failure.
Defined SLA for emergency site visits. Standard office AMC typically offers next-business-day or 8-hour response. Hospital and data centre AMC should offer 4-hour or better. Response time SLA is one of the most important things to confirm before signing an AMC.
A controlled discharge test that verifies the UPS actually delivers its rated runtime. This is the closest thing to a real power cut test — it confirms the batteries perform as expected under actual load conditions.
A written report after each visit documenting what was checked, any findings, and recommendations. This documentation is important for internal audits, insurance purposes, and regulatory compliance (especially for hospitals and pharma manufacturers).
Comprehensive vs Non-Comprehensive AMC
| What's Covered | Non-Comprehensive (Labour) | Comprehensive (Full) |
|---|---|---|
| Scheduled PM Visits | ✓ | ✓ |
| Battery Testing | ✓ | ✓ |
| Emergency Call-Out Labour | ✓ | ✓ |
| Repair Parts (PCBs, fans, capacitors) | At additional cost | ✓ Included |
| Battery Replacement | At additional cost | ✓ Included |
| Relative Annual Cost | Lower | Higher (but predictable) |
| Best For | New UPS (<3 years), tight budgets | Older UPS, hospitals, data centres |
Consider this: a 10 kVA UPS battery set costs ₹35,000–60,000 to replace. A comprehensive AMC for the same UPS might cost ₹18,000–30,000/year. In the year batteries need replacement, comprehensive AMC saves money and eliminates a budget surprise. And if the inverter also needs a capacitor replacement (₹8,000–15,000), you're doubly protected.
How AMC Prevents Costly Failures
The business case for AMC is straightforward when you look at the true cost of a UPS failure:
A comprehensive AMC for this UPS costs ₹25,000–40,000/year. The payback from preventing a single failure event is immediate.
What to Look for in an AMC Provider
- Brand authorisation: Is the provider authorised by the UPS manufacturer? Authorised partners have access to genuine spare parts, technical documentation, and factory training. Ask for the authorisation certificate.
- Defined response time SLA: Any reputable AMC provider will specify exact response time commitments in writing. "We'll get there as soon as possible" is not an SLA. Look for specific hour guarantees.
- Local spares inventory: An engineer who arrives without parts is just a visitor. Ask whether the provider maintains local stock of common spare parts (batteries, fans, PCBs) for your UPS brand.
- Qualified engineers: UPS maintenance requires specific training, especially for large online UPS with high DC bus voltages. Ask about the engineers' qualifications and manufacturer training.
- Written maintenance reports: Every PM visit should produce a written report. If a provider doesn't provide reports, there's no accountability — and no documentation for your audits.
AMC Pricing Factors
UPS AMC pricing in India varies based on several factors:
- UPS capacity (kVA): Higher kVA = larger batteries = higher replacement cost = higher AMC fee
- UPS age: Older UPS have higher failure probability, so comprehensive AMC for older units costs more
- Brand: Authorised brand AMC typically costs more than third-party, but provides genuine parts and brand expertise
- Response time SLA: 4-hour response costs significantly more than next-business-day
- Location: Remote locations where parts and engineers need to travel further may attract a premium
As a rough guide: non-comprehensive office AMC for a 1–3 kVA UPS starts at ₹2,500–5,000/year. Comprehensive AMC for a 10–20 kVA UPS typically ranges from ₹25,000–60,000/year depending on the factors above.
Conclusion
A UPS without AMC is a gamble — you're hoping the batteries will perform when needed and that no components will fail without warning. For critical applications (servers, hospitals, data centres, manufacturing), that gamble has enormous consequences.
AMC transforms your UPS from an unknown quantity into a verified, documented, ready-to-perform asset. The cost is a fraction of the downtime cost of a single failure event. Choose a provider with clear SLAs, local spare parts, and transparent maintenance reporting — not just the lowest quote.
Get an AMC Quote from Sukhai UPS Solutions
Authorised AMC for APC, Eaton, Vertiv, and all major UPS brands. Transparent pricing, defined SLAs, genuine parts. Serving businesses across India.