NCTS NU3K6S 3000VA 2700W Online Pure Sine Wave Tower UPS – 3KVA Uninterruptible Power Supply

The NCTS NU3K6S 3KVA Online Tower UPS is designed to provide reliable backup power and stable electrical output for computers, servers, networking equipment, office electronics, and other critical devices. With a rated capacity of 3000VA/2700W and online pure sine wave technology, consistent power delivery is supported during voltage fluctuations and unexpected power interruptions. A single-phase input and output configuration is provided, making this uninterruptible power supply suitable for professional and commercial power protection applications.

The NCTS NU3K6S Online UPS is equipped with an internal 72V battery system, offering 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 provided to maintain uninterrupted power delivery. Advanced communication and monitoring capabilities are supported through RS232 connectivity and an expandable smart slot, while a 0.9 output power factor and overload protection are incorporated for dependable operation. With its tower design and efficient battery charging system, this 3KVA UPS is suitable for offices, IT infrastructure, security systems, and other environments where continuous power availability is required.

Key Features

- 3000VA / 2700W Power Capacity: A rated output capacity of 3KVA and 2.7KW is provided to support multiple electronic devices and essential equipment during power interruptions.

- Online Pure Sine Wave Output: A stable sine wave output is delivered, with total harmonic distortion maintained below 3% for linear loads and below 8% for nonlinear loads.

- Zero Transfer Time: A 0ms transfer time between AC and battery operation is provided, allowing connected equipment to continue operating without switching delays.

- Internal 72V Battery System: An internal battery configuration is included to provide backup power during electrical outages.

- Reliable Backup Duration: A standard backup time of at least 10 minutes at half load and at least 5 minutes at full load is supported.

- Efficient Battery Charging: Up to 90% battery charge can be achieved in approximately 5 hours under standard conditions.

- Wide Input Voltage Range: An input voltage range of 115–300VAC ±5V is supported to accommodate variations in the incoming electrical supply.

- High Output Power Factor: A 0.9 output power factor is provided for efficient power delivery to connected devices.

- Overload Protection: A 130% load can be sustained for at least 30 seconds, with a recovery point specified at 90% load.

- Communication and Monitoring: RS232 communication is supported, with conversion to RS485 and dry-contact functionality available. An expandable smart slot allows additional monitoring methods, including SNMP and SMS.

- Single-Phase Power Configuration: Single-phase input and output are provided for compatibility with suitable office, commercial, and IT electrical installations.

- Tower Design: A standalone tower configuration is used, with dimensions of 460 × 192 × 333 mm for installation in appropriate equipment areas.

Specifications

General

• Brand: NCTS

• Model: NU3K6S

• Product Type: Online Tower UPS

• UPS Technology: Online Pure Sine Wave

• Rated Output Capacity: 3KVA / 2.7KW

• Input and Output Configuration: Single-Phase Input and Output

• GTIN: 6295151551110

Input Specifications

• Rated Voltage: 220VAC

• Input Voltage Range: 115–300VAC ±5V

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

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

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

Battery Specifications

• Battery Group Voltage: 72V

• Battery Configuration: Internal

• Battery Specification: 12V / 7Ah × 6

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

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

• Battery Charging Time: Approximately 5 Hours to Reach 90% Charge (Standard)

• Long-Running Battery Charging: Charging time depends on the capacity of the external battery group.

Output Specifications

• Output Voltage: 220VAC ±1% (Inverter Output)

• Output Frequency with Normal AC Input: 50 ±5Hz

• Output Frequency with 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 Power Factor: 0.9

• Overload Capability: 130% Load for Not Less Than 30 Seconds

• Overload Recovery Point: 90% Load

• Output Current Peak Coefficient: 3:1

• Transfer Time Between AC and Battery: 0ms

Communication and Monitoring

• Communication Interface: RS232

• RS485 Conversion: Supported

• Dry Contact Mode: Supported

• Smart Slot: Available

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

Dimensions and Weight

• Net Weight: 22.89 kg

• Gross Weight: 25.38 kg

• Unit Dimensions (W × H × D): 460 × 192 × 333 mm

• Carton Dimensions (W × H × D): 612 × 327 × 485 mm

Conclusion

The NCTS NU3K6S 3000VA 2700W Online Pure Sine Wave UPS provides a dependable power backup solution for professional IT equipment, office systems, and essential electronic devices. With its zero-millisecond transfer time, stable sine wave output, internal battery system, overload protection, and expandable monitoring capabilities, continuous power delivery is supported during electrical disturbances and outages. Its 3KVA capacity and tower design make it a practical choice for environments requiring reliable uninterrupted power protection.