Welcome to BKPOWER!

BK-L33-60KVA(PF0.8)丨Three Phase High-Frequency Online UPS
PRODUCT PARAMETERS
- True Online Double-Conversion Technology
- Advanced High-Frequency Transformerless Design
- Ultra-Wide Input Voltage & Frequency Range
- High Efficiency & Energy Savings
- Full Digital DSP Control
Description
Product Overview
The BK-L33-60KVA is the flagship High-frequency online UPS of the L33 Series, engineered as an ultra-high-power Online double-conversion UPS with a transformer-less design—redefining performance for large-scale mission-critical applications. By eliminating bulky line-frequency transformers, this Transformerless online UPS cuts weight by up to 40% even at 60KVA capacity, slashes power losses, and drives down total cost of ownership (TCO) for global enterprises with massive power demands.
As a true High-frequency double-conversion UPS tailored for ultra-high-power loads, it adopts 24/7 inverter-powered operation with 0ms transfer time, providing seamless protection against voltage sags, surges, and blackouts—critical for large-scale IT, industrial, and commercial infrastructure across overseas markets. Equipped with an intelligent active-PFC rectifier, the Double-conversion UPS maintains input power factor ≥0.99 and THDi <5% even under full 60KVA load, while supporting an ultra-wide input voltage range.
Fusing DSP-controlled SPWM precision, robust heavy-duty construction, and enterprise-grade reliability, this flagship UPS System sets the benchmark for green, efficient high-power protection—ideal as a UPS for data center, UPS for server room, UPS for medical equipment , and UPS system for enterprise in North America, Europe, Southeast Asia, and other key global markets.
Applications
This ultra-high-power UPS power solution is exclusively engineered for large-scale, mission-critical scenarios, catering to overseas users with massive load demands:
Finance
Powers regional financial data hubs, high-volume trading platforms, and nationwide ATM networks. As a flagship UPS System for enterprise, it safeguards billions in daily transactions and critical data—essential for multinational banks and global fintech giants.
Telecommunications
Supports regional telecom backbones, large-scale switching centers, and 5G core network facilities. This Double-conversion UPS ensures 24/7 connectivity for operators managing extensive coverage areas, preventing widespread service outages.
Government
Backs national command centers, federal data centers, and critical infrastructure control systems (energy grids, emergency response). The High-frequency online UPS delivers 99.99% availability for large-scale government operations worldwide.
Transportation
Powers international airport terminal infrastructure, high-speed railway signaling networks, and regional traffic management hubs. The Online double-conversion UPS ensures zero downtime for high-power transport systems with non-negotiable reliability needs.
Manufacturing
Protects large-scale automotive assembly lines, semiconductor fabrication plants, and industrial automation complexes. This UPS System avoids catastrophic downtime and equipment damage for global manufacturing giants with heavy-duty production demands.
Hyperscale Data Centers & Server Rooms
Delivers clean, stable power to extreme-density server racks, enterprise storage arrays, and colocation facilities. As a dedicated UPS for data center and UPS for server room, it meets Tier IV reliability standards.
Ultra-Precision High-Power Equipment Rooms
Powers large medical imaging suites (MRI/CT clusters), industrial-grade lab instruments, and semiconductor wafer fabrication equipment. This UPS for medical equipment meets strict electrical quality requirements for global healthcare providers and high-tech manufacturers with ultra-high-power precision gear.
Product Features
Flagship Transformerless High-Frequency Online UPS Architecture
Eliminating the need for bulky power frequency transformers, it reduces weight by approximately 40% even at 80KVA power, while increasing power density and saving space for large-scale deployments. This aligns with the sustainable development goals of overseas companies for high-power systems.
True Online Double-Conversion UPS Operation
Inverter powers 48KW continuous loads 24/7 with 0ms transfer time—capable of handling far larger loads than smaller models. Ensures uninterrupted operation for critical ultra-high-power equipment in global mission-critical environments.
Intelligent Active PFC for High-Frequency UPS (Full-Load Stability)
Maintains input power factor ≥0.99 and THDi <5% even under full 60KVA load, outperforming smaller models that may degrade at peak capacity. Ultra-wide input voltage range adapts to unstable overseas grids for large-scale installations.
DSP Full-Digital Control
High-performance DSP delivers sub-millisecond response to load fluctuations, critical for maintaining stability under 60KVA ultra-high-power loads.
High Output Power Factor + Ultra-High Load Compatibility
Supports 48KW continuous output without derating—compatible with modern high-power IT, medical, and industrial loads. Ideal for UPS for data center and UPS system for enterprise with massive load requirements.
Specifications
| Model | BK-L33-60KVA | |
| Capacity | 60KVA/48KW | |
| Input | Wiring | Three-phase four wires + Ground |
| Rated Voltage | 380/400/415Vac | |
| Voltage Range | 208-304Vac (50% load); 304-478Vac (100% load) | |
| Frequency Range | 46Hz-54Hz (@50Hz system); 56Hz-64Hz (@60Hz system) | |
| Input Power Factor | ≥0.99 (100% load) | |
| Output | Wiring | Three-phase four wires + Ground |
| Rated Voltage | 380/400/415Vac | |
| Voltage Regulation | ±1% | |
| Frequency Range (Synchronous Range) | 46Hz-54Hz (@50Hz system); 56Hz-64Hz (@60Hz system) | |
| Frequency Range (Battery Mode) | 50Hz±0.1Hz or 60Hz±0.1Hz | |
| Output Power Factor | 0.8 | |
| Distortion (THDV%) | ≤2% (@100% linear load); ≤5% (@100% non-linear load) | |
| Overload Capability (AC Mode) | 100%-110%: 10 minutes; 110%-130%: 1 minute; >130%: 1 second | |
| Overload Capability (Battery Mode) | 100%-110%: 30 seconds; 110%-130%: 10 seconds; >130%: 1 second | |
| Current Peak Ratio | 3:1 (maximum) | |
| Switching Time | 0ms | |
| Battery | Battery Type | External battery |
| Model | 12V | |
| Number of Batteries | 30-50 units (optional) | |
| Charging Current | 20A | |
| Charging Voltage | N×13.65VDC±1% (N=number of batteries) | |
| Efficiency | Line Mode | 94.5% |
| ECO Mode | 91% | |
| Management | Display Panel | LCD display / LED status indicator |
| Communication Function | Intelligent RS-232 or USB, supporting Windows 2000/2003/XP/Vista/2008, Windows 7, Linux, Unix, MAC | |
| Optional SNMP | Supports power management via SNMP manager and web browser | |
| Environmental | Operating Temperature | 0~40℃ (Battery life will be reduced when temperature >25℃) |
| Humidity | <95% RH (non-condensing) | |
| Altitude | <1000m for Nominal power | |
| Noise Level | <65dB@1meter | |
| Standards | Safety | IEC/EN 62040-1 |
| EMC | IEC/EN 62040-2 Category C3 | |
| Physical | IP Class | IP20 |
| Dimensions (D×W×H) | 868×250×862 mm | |
| Weight | 88.6 kg | |
FAQs
UPS stands for Uninterruptible Power Supply and is a device that provides a continuous supply of power to protect critical loads from power failures or fluctuations.
The main role of a UPS is to provide a backup power source to ensure that critical equipment can continue to operate when utility power is interrupted or unstable, avoiding data loss or equipment damage.
UPS is mainly divided into three types: offline, online and online interactive.
When choosing the power capacity of the UPS, you need to consider the total power demand of the load, it is usually recommended to choose a slightly larger than the total load power of the UPS to ensure sufficient standby time.
The standby time of a UPS depends on the battery capacity and load power. Standby time usually ranges from 10 minutes to several hours, and the specific needs can be determined according to the actual application scenario.
.png)
.png)

-sub-2.jpg)
-sub-1.jpg)
-sub-3.jpg)

-sub-2-150x150.jpg)
-sub-1-150x150.jpg)
-sub-3-150x150.jpg)





