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CNH330R Series 10-40KVA 3Ph Rack Mount High Frequency Online UPS

Model Number: CNH330R 10-40KVA

Nominal Capacity: 10-40KW

Nominal Voltage: 380/400/415VAC

Input Voltage Range: 138~476VAC

Nominal Frequency: 40~70HZ

Application Fields：

Data center server rooms, industrial automatic production lines, communication transmission systems, medical precision instruments, rail transit control equipment, financial computer rooms, security monitoring hosts and other mission-critical devices requiring stable and uninterrupted power supply.

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3P/3P Rack Mount High Frequency Online UPS 10-40KVA

Description

CNH330R series is a brand-new 3-phase input / 3-phase output rack-mount high-frequency double-conversion online UPS developed by CONSNANT, covering five power ratings: 10KVA, 15KVA, 20KVA, 30KVA and 40KVA. Designed for standard 19-inch server racks with compact dimensions, this modular UPS supports N+X redundant parallel expansion. Users can add extra modules gradually according to actual load growth, realizing phased investment and flexible capacity expansion to cut upfront capital cost.

Equipped with full DSP digital control and high-frequency double-conversion topology, this UPS eliminates nearly all power grid anomalies including power blackout, overvoltage, undervoltage, voltage sag, damped oscillation, high-voltage pulse, surge, inrush current, THD distortion, EMI interference and frequency drift. It delivers clean, seamless sinusoidal power for critical loads such as computer servers, automatic industrial equipment, communication systems and precision machinery.

Core Functions & Highlights：

Balanced 3P/3P Power Architecture3-phase 4-wire plus earth input & output design automatically balances three-phase input currents without unbalance risks, perfectly matching medium & large data centers and industrial three-phase power distribution systems.
Full Digital DSP Intelligent ControlAdopts Digital Signal Processor (DSP) to boost overall reliability, self-diagnosis, multi-level protection and voltage/frequency regulation performance.
Compact Lightweight Rack-Mount StructureStandard 3U rack size (485×130×728mm), net weight 23–28.5kg per module, enabling high-density cabinet deployment with minimal space occupation.
Customizable Battery ConfigurationSupports 30 to 50 pieces of 12V batteries with optional DC voltage from ±180V to ±300Vdc. Max charging current reaches 10A; users can set battery capacity and charging current via dedicated configuration tools.
Advanced 3-Stage Intelligent ChargingAutomatic smooth switching among three charging phases: high-current constant charge (up to 90% capacity), constant voltage activation & full charging, floating maintenance. This technology accelerates charging and extends battery service life effectively.
Dual LCD & LED Display PanelReal-time visual monitoring of input/output voltage, frequency, load percentage, battery level and ambient temperature for intuitive daily maintenance.
Local & Remote Intelligent MonitoringStandard RS485 communication port; optional SNMP card supports remote monitoring, remote control and fault alarm, compatible with centralized data center management platforms.
EPO & REPO Emergency Power Off FunctionLocal EPO button and remote REPO interface enable instant full UPS shutdown in emergency scenarios to protect equipment and personnel safety.
High Energy Efficiency & Superior Output WaveformEfficiency ≥98% under ECO energy-saving mode and ≥95% under standard online mode. Output voltage precision ±1%; THD ≤2% for linear loads and ≤5% for non-linear loads. Zero transfer time between mains and battery mode.
Wide Grid Adaptability & Multi-Stage Overload ProtectionUltra-wide input voltage range 138~476VAC, adaptive input frequency 40–70Hz; input power factor ≥0.99 with input current THD ≤3%. Tiered overload protection: 110% load for 60 mins, 125% load for 10 mins, 150% load for 1 min, immediate shutdown above 150% load.

Technical Parameters

Model		CNH330R 10-40KVA
Capacity		10-40KVA
Input
Phase		3Phase/4Wires + Ground
Rated Voltage		380/400/415Vac
Voltage Range		138~476Vac
Frequency Range		40~70Hz
Power Factor		≥0.99
Bypass Voltage Range		Max.voltage: +15%(optional +5%、+10%、+25% ) Min. voltage: -45% (optional -20%、-30%) Frequency protection range: ±10%
Current Harmonic		≤3(100％ linear load)
Output
Phase		3Phase/4Wires + Ground
Rated Voltage		380/400/415Vac
Power Factor		0.9
Voltage Precision		±1%
Output Frequency	Utility Mode	±1%、±2%、±4%、±5%、±10% of the rated frequency(optional)
	Battery Mode	(50/60±0.2)Hz
Crest Factor		3:1
Transfer Time		Utility to Battery : 0ms Utility to bypass : 0ms (following)
Overload Capacity		Load≤110%，60min，≤125%，last 10min，≤150%last 1min，≥150% shut down UPS immediately
THD		≤2% with linear load ≤5% with non linear load
Efficiency		ECO mode≥98%;Normal mode≥95%
Comunication Interface
UPS module		RS485、SNMP card(optional)
Battery
Voltage		±180V/±192V/±204V/±216V/±228V/±240/±252/±264/±276/±288/±300Vdc optional
Charge Current(A):UPS module		Maximum current 10A
Backup time		Depends on the capacity of external batteries
Operating Environment
Temperature		0℃～40℃
Humidity		0～95% non condensing
Storage temperature		-25℃～55℃
Altitude		< 1500m
Other
Unit Dimensions(WHD)		485×130 x728mm
Weight (Kg)		23/25/25/26/28.5
Industry Standard		CE,EN/IEC 62040-2,EN/IEC 62040-1-1

What are the essential differences between the high-frequency double-conversion topology used in CNH330R and traditional industrial frequency UPS in terms of power link, THDI, and dynamic response?

This unit adopts two-stage high-frequency double-conversion topology with full DSP-controlled 3-phase active PFC boost rectifier and full-bridge high-frequency inverter, without low-frequency isolation transformer. Integrated active 3P PFC achieves input PF ≥0.99 and input current THDI ≤3%. Traditional line-frequency UPS only uses passive LC filter, resulting in THDI ranging from 12% to 30%. In terms of dynamic performance, the rectifier closed-loop bandwidth reaches ≥2kHz. Under step load change (0↔100% rated load), output voltage transient deviation is less than ±3% with recovery time within 10ms. Line-frequency UPS suffers ±8% or higher voltage dip due to large transformer inductance. Elimination of power frequency transformer cuts copper & iron loss by a large margin, raises online efficiency by 3~5 percentage points, and reduces unit weight by over 40%, ideal for high-density rack deployment.

How can a three-phase active PFC achieve independent phase regulation and harmonic suppression under unbalanced three-phase input conditions? What is its limit of unbalance tolerance?

The rectifier applies independent phase-separated Boost PFC structure with separate voltage & current closed-loop control for Phase A/B/C without cross coupling. Under input unbalance degree ≤±25% or single-phase loss while the other two phases remain normal, the rectifier maintains rated DC bus voltage without input fault alarm. Independent per-phase current shaping ensures input THDI ≤3% even under severe three-phase unbalance, eliminating severe current distortion defects of integrated 3-phase rectifiers.

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