Microtek MAX-3KVA 72V Pure Sinewave Online UPS without Batteries
- 3KVA / 2700W Online Double-Conversion Topology: True online UPS with zero transfer time (0.05 ms) – continuous pure sinewave power for servers, networking equipment, and industrial loads
- No In-Built Batteries – Maximum Flexibility: External 72V DC battery bank required (6 x 12V batteries). Choose your own capacity (7AH to 200AH) for customized backup runtime
- High-Capacity Inbuilt Charger: 17 Amp boost charging capability – rapidly recharges large external battery banks, significantly reducing recharge time
- Advanced Protection Suite: Inbuilt OVCD (Over Voltage Cut-Off Device) with surge protection, static bypass, generator compatibility, overload and short circuit protection
- 2 Year Onsite Warranty: Comprehensive manufacturer warranty with onsite service – Made in India with CE & ISO certification
Original price was: ₹41,490.00.₹29,990.00Current price is: ₹29,990.00.
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Description
The Microtek Online UPS MAX-3KVA 72V Pure Sinewave is a professional-grade double-conversion online uninterruptible power supply engineered for mission-critical applications where zero downtime, clean power, and extended runtime flexibility are non-negotiable. Unlike conventional offline or line-interactive UPS systems, this true online topology continuously converts AC to DC and back to AC, providing perfect isolation from input power anomalies. This specific model is configured WITHOUT in-built batteries, offering system integrators, data centers, and industrial users complete freedom to deploy external 72V battery banks scaled precisely to their backup duration requirements.
Discover the complete range of Microtek professional power solutions at our dedicated Microtek UPS and inverter collection. Every unit is sourced from authorised channels and carries manufacturer-verified specifications.
True Online Double-Conversion Topology – Zero Transfer Time
The MAX-3KVA employs genuine online double-conversion technology. The rectifier converts incoming AC power to regulated DC, simultaneously charging the external battery bank while the inverter converts DC back to clean, regulated AC power for connected equipment. Unlike line-interactive or offline UPS systems that exhibit a 4-10 ms transfer gap during power failure, this Microtek online UPS delivers seamless power with transfer time of just 0.05 milliseconds – effectively zero breakage. Your servers, storage arrays, and sensitive industrial controllers remain operational through every grid transient, voltage sag, or complete outage without a single interruption.
External Battery Architecture – Unlimited Runtime Scalability
This model is purpose-built without internal batteries, accepting an external 72V DC battery bank. The 72V nominal configuration requires six 12V batteries connected in series. You are not locked into proprietary battery packs or limited internal compartments. Select from a wide range of battery capacities – from 7AH for compact office deployments to 200AH+ for industrial applications requiring hours of runtime. The UPS automatically adapts to the connected battery capacity. This architecture also simplifies maintenance and future capacity upgrades without replacing the UPS core.
Critical Note: Batteries are not included with this UPS. External 72V battery bank must be purchased separately. Compatible battery types include Sealed Lead Acid (SLA), SMF-VRLA, and tubular batteries.
17 Amp High-Performance Inbuilt Charger
The integrated battery charger delivers an impressive 17 Amps of boost charging current – significantly higher than standard UPS systems (typically 1.5A to 9.5A). This high-current charging capability is specifically engineered for external battery banks, enabling rapid recharge after discharge events. For installations utilizing large-capacity battery banks, this translates to dramatically reduced downtime between outage cycles. The advanced CCCV (Constant Current Constant Voltage) charging algorithm with auto-trickle mode optimizes battery health and extends service life.
Technical Specifications
| Category | Specification |
|---|---|
| Manufacturer | Microtek International Pvt. Ltd. |
| Model | Microtek-Online UPS MAX-3KVA 72V Pure Sinewave (Without In-Built Batteries) |
| UPS Topology | Online Double-Conversion (True Online) |
| Rated Capacity | 3 KVA / 2700 Watts |
| DC Voltage | 72 VDC (External Battery Bank – 6 x 12V Batteries in Series) |
| Waveform Type | Pure Sinewave |
| Input Voltage Range | 160V – 260V AC (Wide range for Indian grid conditions) |
| Input Frequency | 50 Hz +/- 5% (Synchronized range: 47-53 Hz) |
| Output Voltage | 230V AC +/- 1% (Regulated) |
| Output Frequency | 50 Hz +/- 0.1% (Battery mode) |
| Output Frequency (Synchronized) | 50 Hz +/- 5% (Mains mode) |
| Transfer Time | 0.05 Milliseconds (AC failure to battery mode) – Zero break |
| Output Power Factor | 0.9 |
| Crest Factor | 3:1 (Supports high inrush loads) |
| Total Harmonic Distortion (THD) | <2% (Linear load) / <5% (Non-linear load) |
| Efficiency (AC mode) | 85% – 92% (Load dependent) |
| Efficiency (Battery mode) | >85% |
| Charging Current (Max) | 17 Amps (Boost charging – external battery bank) |
| Battery Configuration | External 72V DC bank required (batteries not included) |
| Number of Batteries Supported | 6 x 12V (Series connection) |
| Recharge Time | Dependent on connected battery AH capacity (typical: 4-8 hours for 100AH bank) |
| Output Current (Max) | 17 Amps |
| Phase Configuration | Single Phase Input / Single Phase Output |
| Form Factor | Tower / Rack-mount convertible |
| Display Type | LED / LCD (Model variant dependent) – Real-time status indicators |
| Audible Noise | <45 dB @ 1 meter (Fan speed controlled) |
| Protection Features | OVCD (Over Voltage Cut-Off Device) with Surge Protection Static Bypass (Automatic & Manual) Overload Protection (110% / 300%) Short Circuit Protection Over Temperature Protection EMI/RFI Noise Filter Low Battery Cutoff |
| Generator Compatibility | Yes – Supports sinewave generator input |
| Communication Interface | RS232 Serial Port, SNMP Slot (Optional), Monitoring Software compatible |
| Emergency Power Off (EPO) | Yes |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -20°C to 60°C |
| Operating Humidity | 0% – 95% RH (Non-condensing) |
| Dimensions (W x D x H) | 430 x 190 x 320 mm (16.9 x 7.5 x 12.6 inches) – Approx |
| Weight (Net) | 7.8 kg (UPS unit only – without batteries) |
| Weight (Gross) | 8.6 kg (Approx, including packaging) |
| Enclosure Material | MS (Mild Steel) with powder coating, minimum thickness 1.2 mm |
| Ingress Protection | IP21 (Indoor installation) |
| Certifications | CE, ISO 9001, ISO 14001 |
| Country of Origin | India (Made in India) |
| Warranty | 2 Years Onsite Warranty (Comprehensive manufacturer warranty) |
Note on Weight Discrepancy: This model (without in-built batteries) weighs approximately 7.8-8.6 kg. Listings showing 13-15 kg typically refer to the version with internal batteries. Verified specifications for the external battery configuration are presented above.
Advanced Protection and Power Conditioning
The Microtek MAX-3KVA incorporates multiple layers of protection for both the UPS and connected equipment. The inbuilt OVCD (Over Voltage Cut-Off Device) with surge protection continuously monitors input mains and disconnects the UPS if voltage exceeds safe thresholds, preventing damage to internal components and downstream devices. The static bypass circuit provides an automatic alternative path for power during overload conditions or internal faults, ensuring continuous load operation. Advanced PFC (Power Factor Correction) technology maintains input power factor above 0.99, reducing harmonic pollution and improving grid compatibility.
Generator and Alternate Power Source Compatible
This online UPS is fully compatible with backup generators. The wide input voltage range (160V-260V) and frequency tracking capability allow seamless operation with generator output, which often exhibits voltage and frequency variations. This makes the MAX-3KVA ideal for sites with prolonged power cuts where generator backup is essential, as well as for mobile applications, events, and temporary installations.
Ideal Applications
- Data Centers and Server Rooms: Zero transfer time protects critical IT infrastructure from data corruption and hardware damage
- Industrial Control Systems: PLCs, CNC machines, and process control equipment requiring clean, regulated power
- Healthcare Facilities: Diagnostic equipment, laboratory instruments, and medical imaging devices
- Telecommunications: Network racks, exchanges, and tower equipment requiring extended backup with external battery banks
- Commercial Establishments: POS systems, security control rooms, and building management systems
- High-End Residential: Home theaters, automation systems, and premium appliance protection
Package Contents
- Microtek Online UPS MAX-3KVA 72V Pure Sinewave (Without In-Built Batteries) – Main unit
- Input power cord (Indian standard 15A plug)
- Output terminals / Indian standard socket (configuration may vary by SKU)
- RS232 communication cable
- User manual and installation guide
- Warranty card (2 Year Onsite Warranty registration)
Important: External 72V battery bank, battery interconnect cables, and battery rack are NOT included and must be ordered separately.
Why Buy from Thencix?
Thencix is India’s trusted source for professional power backup solutions. Every UPS, inverter, and accessory is specification-verified, securely packaged, and backed by dedicated after-sales support.
- Authentic products with manufacturer-verified specifications
- Professional, damage-safe packaging
- Fast delivery across India
- GST invoice with every order
- Cash on Delivery available
- Guided installation support via WhatsApp
- In-house warranty assistance — no need to contact the brand directly
- Warranty appointments arranged for you
Support:
Email: support@thencix.com
WhatsApp: +91 98911 50949
Complete Your Power Backup System
This UPS requires an external 72V battery bank. Select appropriate batteries based on your runtime requirements:
- For compact office setups: 6 x 12V 7AH to 26AH SMF/VRLA batteries
- For extended runtime applications: 6 x 12V 40AH to 200AH tubular or SMF batteries
- For complete installation: Battery interconnect cables, racks, and accessories
Frequently Asked Questions
Does this UPS come with built-in batteries?
No. This specific model is the “Without In-Built Batteries” version. It requires an external 72V DC battery bank consisting of six 12V batteries connected in series. Batteries must be purchased separately. This design allows you to choose the exact battery capacity (AH rating) needed for your desired backup runtime and simplifies future battery replacements.
What is the difference between this model and the MAX+ series?
The primary difference is battery configuration and charging capability. This MAX series model (without in-built batteries) features a high-capacity 17 Amp charger designed for external battery banks, enabling rapid recharge of large-capacity batteries. The MAX+ series typically includes lower charging currents (1.5A to 9.5A) and is often offered with internal battery packs. This MAX model provides superior flexibility for applications requiring extended runtime and faster recharge cycles.
How many batteries do I need and how do I connect them?
You require six (6) identical 12V batteries (same capacity, age, and type). Connect them in series: positive of battery 1 to negative of battery 2, positive of battery 2 to negative of battery 3, and so on. The final positive terminal connects to the UPS positive input, and the final negative terminal connects to UPS negative input. Total voltage becomes 72V DC (6 x 12V). Use appropriate gauge battery interconnect cables (not included) for safe installation.
What is the maximum battery capacity this UPS can support?
The UPS can support a wide range of external battery capacities. The 17 Amp charger can efficiently recharge battery banks up to 200AH or larger. The actual limit depends on your runtime requirements and physical space. For very large banks (above 200AH), we recommend consulting with our technical team to ensure optimal charging configuration.
What is the typical backup time with standard batteries?
Backup time depends entirely on the capacity (AH) of your external battery bank and the connected load. With six 12V 7AH batteries (total 504VAH) at 50% load (approx 1350W), expect approximately 10-15 minutes. With six 12V 100AH batteries (total 7200VAH) at 50% load, expect approximately 2-3 hours. For precise runtime calculations, use the formula: Backup Time (Hours) = (Battery AH x Battery Bank Voltage x Efficiency) / Load Watts. Contact our support team for assistance.
Is this UPS compatible with generators?
Yes, this Microtek online UPS is fully generator compatible. It features a wide input voltage range (160V-260V) and frequency tracking capability that accommodates the fluctuating output typical of backup generators. This makes it ideal for locations with extended power cuts where generator backup is required.
What is the warranty period and service coverage?
Microtek provides a comprehensive 2-year onsite warranty for this UPS. Coverage includes manufacturing defects, component failures, and workmanship issues. Thencix offers complete in-house warranty assistance — you never need to contact Microtek directly. We coordinate diagnostics, service appointments, and replacement processing on your behalf. Valid GST invoice is required for warranty service.
Specification
| Brand |
Microtek |
|---|
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| Is Discontinued By Manufacturer |
No |
|---|---|
| Product Dimensions |
24 x 32 x 4.8 cm ,1.5 Kilograms |
| Manufacturer |
Prama Hikvision India Pvt.Ltd ,Prama Hikvision India Pvt.Ltd ,Prama Hikvision India Pvt.Ltd |
| Item model number |
DS-7608NXI-K1 |
| Country of Origin |
India |
| Packer |
Prama Hikvision India Pvt.Ltd |
| Importer |
Prama Hikvision India Pvt.Ltd |
| Item Weight |
1 kg 500 g |
| Item Dimensions LxWxH |
24 x 32 x 4.8 Centimeters |
| Net Quantity |
1 count |
| Included Components |
Main Unit ,Adapter ,HDMI |
| Brand |
Hikvision |
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