NCTS NU6K16S 6KVA 4800W Online Tower UPS – Pure Sine Wave Uninterruptible Power Supply with 16 Batteries

The NCTS NU6K16S 6KVA Online Tower UPS is designed to provide reliable backup power and stable electrical output for servers, networking equipment, office systems, and other critical electronic devices. With a rated power capacity of 6000VA/4800W, this uninterruptible power supply (UPS) is equipped with pure sine wave output technology to support consistent power delivery. A single-phase input and output configuration is provided, while a 220V AC rated voltage is supported for compatible electrical installations.

The NCTS NU6K16S UPS is equipped with 16 internal 12V 7Ah batteries, providing a standard backup time of at least 10 minutes at half load and 5 minutes at full load. A zero-millisecond transfer time between AC and battery operation is supported to maintain continuous power during electrical interruptions. Advanced communication and monitoring capabilities are also included through RS232 connectivity and a Smart Slot, allowing additional monitoring options to be integrated. With overload protection, precise output voltage regulation, and an integrated tower design, this 6KVA UPS is suitable for professional environments where dependable power protection is required.

Key Features

6KVA / 4800W Power Capacity

A rated output capacity of 6000VA (4800W) is provided to support multiple connected devices and critical electronic equipment. The UPS is designed for applications requiring stable and continuous electrical power.

Online UPS with Pure Sine Wave Output

Pure sine wave output is delivered to provide a stable electrical waveform for sensitive electronic equipment. Total harmonic distortion is maintained below 3% with linear loads and below 8% with nonlinear loads.

16 Internal Batteries for Backup Power

The UPS is equipped with 16 internal 12V 7Ah batteries, providing backup power during electricity interruptions. A standard backup duration of at least 10 minutes at half load and at least 5 minutes at full load is supported.

Zero-Millisecond Transfer Time

A transfer time of 0ms between AC and battery operation is provided, allowing connected equipment to receive uninterrupted power during a transition between power sources.

Stable Output Voltage Regulation

An output voltage of 220V AC ±1% is maintained during inverter operation. This precise voltage regulation helps protect connected equipment from unstable electrical conditions.

Overload Protection

Overload protection is included to support safe operation under excessive electrical loads. When the load reaches 105%–125% of the rated capacity, the UPS is designed to transfer to bypass mode after one minute.

Efficient Battery Charging

The internal battery charging system is designed to restore the batteries to 90% capacity within approximately five hours under standard conditions.

Communication and Monitoring Options

An RS232 communication interface is provided, with support for conversion to RS485 and dry-contact connectivity. A Smart Slot is also included to allow monitoring capabilities to be expanded through SNMP, SMS, and other supported methods.

Wide Input Voltage Range

An input voltage range of 120–275V AC ±5V is supported, allowing the UPS to operate across varying electrical supply conditions.

Tower Design for Professional Installations

A tower-style enclosure is used to accommodate the UPS components and internal battery system. The design is suitable for installation in offices, equipment rooms, and professional IT environments.

Specifications

General Specifications

• Brand: NCTS

• Model: NU6K16S

• Product Type: Online Tower Uninterruptible Power Supply (UPS)

• UPS Technology: Online Pure Sine Wave

• Input/Output Configuration: Single-phase input and output

• Rated Output Capacity: 6KVA / 4.8KW

• Output Power Factor: 0.8

• GTIN: 6295151551127

Input Specifications

• Rated Voltage: 220V AC

• Input Voltage Range: 120–275V AC ±5V

• Input Frequency Range: (45–55) ±0.5Hz

• Bypass Voltage Range: 80V AC × (1 ±5%) to 285V AC × (1 ±5%)

• Maximum Input Current When Powered On: Less than 150% of rated current

Output Specifications

• Output Voltage: 220V AC ±1% (Inverter Output)

• Output Frequency (Normal AC Input): 50 ±5Hz

• Output Frequency (Abnormal AC Input): 50Hz ±1%

• Output Waveform: Pure Sine Wave

• Total Harmonic Distortion (Linear Load): Less than 3%

• Total Harmonic Distortion (Nonlinear Load): Less than 8%

• Output Current Peak Coefficient: 3:1

• Transfer Time Between AC and Battery: 0ms

Battery Specifications

• Battery Group Voltage: 192V

• Battery Configuration: Internal

• Battery Capacity: 12V 7Ah

• Battery Quantity: 16 Pieces

• Backup Time at Half Load: ≥10 Minutes (Standard)

• Backup Time at Full Load: ≥5 Minutes (Standard)

• Battery Charging Time: 5 Hours to 90% Capacity (Standard)

Protection and Monitoring

• Overload Protection: 105%–125% of Rated Capacity

• Overload Response: Transfer to Bypass After 1 Minute

• Communication Interface: RS232

• Additional Communication Support: RS485 Conversion and Dry Contact

• Expansion Interface: Smart Slot

• Expandable Monitoring Methods: SNMP, SMS, and Other Supported Monitoring Methods

Physical Specifications

• Net Weight: 57 kg

• Gross Weight: 64 kg

• Unit Dimensions (W × H × D): 515 × 250 × 620 mm

• Carton Dimensions (W × H × D): 660 × 365 × 730 mm

• Form Factor: Tower

Conclusion

The NCTS NU6K16S 6KVA 4800W Online Tower UPS is designed to deliver dependable backup power, stable pure sine wave output, and continuous electrical protection for critical electronic systems. With 16 internal batteries, zero-millisecond transfer time, overload protection, and expandable monitoring capabilities, reliable power management is supported for office equipment, servers, networking infrastructure, and other professional applications.