Microtek MAX-2KVA 72V Pure Sinewave Online UPS without Batteries 2Yr

The Microtek MAX-2KVA 72V Pure Sinewave Online UPS is a professional-grade 2KVA / 1800W double-conversion uninterruptible power supply engineered for critical applications requiring clean, continuous power and scalable runtime flexibility. This specific model is the EXTERNAL BATTERY VERSION (without in-built batteries) and features MOSFET-PWM technology with an INBUILT ISOLATION TRANSFORMER – a key differentiator from the MAX+ series which offers isolation transformer only as an option. Designed for computer networks, servers, cyber cafes, ATM machines, laboratories, and industrial control systems, this true online UPS delivers pure sinewave output with zero transfer time and complete galvanic isolation.

Explore 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.

Official Warranty – 2 Years Comprehensive Onsite Coverage

The Microtek MAX-2KVA 72V carries an official 2 Years comprehensive onsite warranty, verified through Government e-Marketplace (GeM) listings and multiple authorised resellers. The warranty covers manufacturing defects, component failures, and workmanship issues with Microtek’s authorised service network ensuring rapid onsite support across India. Thencix provides complete in-house warranty assistance — you never need to contact Microtek directly. We handle diagnostics, service appointment scheduling, and replacement processing on your behalf. Valid GST invoice is required for warranty service.

CRITICAL – Verify Model Selection: MAX vs MAX+ Series

Microtek offers two distinct 2KVA 72V online UPS configurations. Please verify your requirement carefully:

• THIS PRODUCT – MAX Series (NM72MX2KK11): 2KVA / 1800W, MOSFET-PWM technology, INBUILT ISOLATION TRANSFORMER, 17 AMP CHARGER, weight 13.4 kg, external 72V battery bank required. Ideal for applications requiring built-in isolation and maximum charging current.
• MAX+ Series (NM72MX2KK11-IB / External): 2KVA / 1800W, IGBT-PWM technology, isolation transformer OPTIONAL (external accessory), 9.5 AMP CHARGER, weight 12.1 kg, available with internal batteries (IB) or external configuration.

Choose this MAX Series model if you require the inbuilt isolation transformer and maximum 17A charging current for large external battery banks. Browse our full selection of Microtek UPS systems and power backup solutions to compare all available models.

True Online Double-Conversion with Inbuilt Isolation Transformer

The MAX-2KVA employs genuine online double-conversion topology using high-frequency MOSFET-PWM technology with micro-controller based design. The rectifier converts incoming AC mains to regulated DC power, simultaneously charging your external 72V battery bank, while the inverter continuously converts DC back to clean, stable pure sinewave AC power for connected equipment. This model features an INBUILT ISOLATION TRANSFORMER providing complete galvanic isolation – eliminating ground loops, attenuating common-mode noise, and offering superior protection for sensitive medical, laboratory, research, and audio-visual equipment. Transfer time is zero from AC mode to battery mode – your critical loads remain operational through every voltage sag, spike, surge, or complete blackout without interruption.

External Battery Architecture – Unlimited Runtime Scalability

This UPS is purpose-built WITHOUT internal batteries, accepting an external 72V DC battery bank formed by connecting six 12V batteries in series. You have complete freedom to select battery type and capacity – from compact 7Ah SMF/VRLA batteries for short-duration office protection to large 200Ah+ tubular batteries for extended industrial runtime. The minimum recommended battery capacity is 800 VAH, providing approximately 30 minutes backup time at full load. The UPS automatically adapts to the connected capacity, and the powerful 17 Amp high-current charger ensures even large battery banks are recharged rapidly. Battery replacement and future capacity upgrades are simplified, as no internal battery compartment access is required.

Critical Note – Batteries Not Included: This unit contains no internal batteries. You must purchase six matching 12V batteries and appropriate interconnect cables separately.

17 Amp High-Performance Intelligent Battery Charger

Standard UPS systems with internal batteries use low-current trickle chargers rated at only 0.7-0.8A. The MAX-2KVA features a robust 17 Amp boost charger specifically engineered for external battery banks – one of the highest charging currents available in its class. This higher charging current dramatically reduces recharge time, ensuring your system is ready for the next power failure sooner. The advanced three-stage intelligent charging algorithm (bulk, absorption, float) optimises battery health, prevents overcharging, and maximises battery service life. Automatic battery charging continues even when the UPS is in off mode, ensuring your external bank remains fully charged and ready.

Inbuilt Over Voltage Cut-Off Device (OVCD) and Comprehensive Protection

The MAX-2KVA incorporates an inbuilt Over Voltage Cut-Off Device with integrated surge protection. This critical safety feature continuously monitors incoming mains voltage and instantly disconnects the UPS if unsafe voltage levels are detected, safeguarding both the UPS unit and your sensitive connected equipment from damage. Comprehensive protection suite includes:

• Short Circuit Protection: 5 cycles turn off inverter, no transfer to bypass, audible alarm; input fuse blown or breaker action
• Overload Protection: >110%: 30 seconds transfer to bypass mode; >150%: instant transfer to bypass mode
• 20% Overload Limit for minimum 10 minutes
• 50% Overload Limit for minimum 1 minute
• Over Temperature Protection
• DC Fan Failure Protection
• EMI/RFI Noise Filter
• Low Battery Cut-Off (10.5V per 12V battery)
• Static Bypass (Enable/Disable)
• IP21 Degree of Protection

For complete installation requirements including battery interconnect cables, power cables, and accessories, browse our comprehensive selection of UPS peripherals.

Technical Specifications

Advanced PFC Technology and Generator Compatibility

The MAX-2KVA incorporates Advanced Power Factor Correction (PFC) technology, maintaining input power factor above 0.99 at full load for reduced harmonic pollution and improved energy efficiency. The UPS is fully generator-compatible, with wide input voltage and frequency windows that accept power from standard sinewave generators even when output voltage and frequency fluctuate. This makes the MAX-2KVA an ideal choice for sites with frequent, prolonged power cuts where generator backup is essential, as well as for industrial applications, data centers, and critical infrastructure installations.

Advanced Battery Management and Smart Communication

The Microtek Advanced Battery Management system continuously monitors battery voltage, temperature, and charge current, automatically adjusting charging parameters to suit the connected battery type and condition. This intelligent management extends battery service life and optimises performance. The Smart RS232 communication interface, complete with included monitoring software, provides real-time status, event logging, and graceful shutdown capabilities for connected servers and workstations. An optional SNMP card slot enables advanced network management integration for enterprise environments.

Package Contents

• Microtek MAX-2KVA 72V Pure Sinewave Online UPS – Model NM72MX2KK11 (Without In-Built Batteries)
• Input power cable (Indian standard 15A plug)
• Output socket strip / terminal block (configuration may vary by SKU)
• RS232 communication cable
• Monitoring software CD
• User manual and quick installation guide
• Warranty card (2 Years Onsite Warranty registration)

Important – Batteries Not Included: This UPS contains NO internal batteries. External 72V battery bank (6 x 12V batteries), 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

Build Your Complete Power Backup System

Select the right external battery bank for your runtime requirements:

• 6 x 12V SMF/VRLA batteries (7Ah to 26Ah) – for short-duration office, retail, and network protection
• 6 x 12V tubular or SMF batteries (40Ah to 200Ah+) – for extended runtime in industrial, healthcare, and residential applications
• Battery interconnect cables, racks, and accessories – complete your professional installation

View our complete catalog of online UPS systems, offline UPS, and power inverters to find the perfect solution for your application.

Ideal Applications

• Data Centers & Server Rooms: 2KVA capacity with zero transfer time protects critical IT infrastructure. Inbuilt isolation transformer provides superior noise immunity for sensitive equipment
• Telecommunications: Network racks, exchanges, edge servers, and communication equipment requiring clean, regulated sinewave power
• Healthcare Facilities: Diagnostic devices, patient monitors, pathology equipment, laboratory instruments requiring isolation transformer protection
• Industrial Automation: PLCs, sensors, control systems, CNC machines, and process equipment
• Cyber Cafes & Gaming Centers: Multiple workstations requiring reliable backup protection
• Educational Institutions: Computer labs, library servers, research equipment, and administrative systems
• ATM Machines & Banking: Reliable backup power for financial transaction equipment with stringent power quality requirements
• Commercial Establishments: POS systems, security control rooms, building management systems, and critical office infrastructure