Uninterruptible power supply

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On-Line UPS Must has developed a new generation of on-line intelligent UPS---EH Series 1K(S)/2K(S)/3K(S)/6K(S)/10K(S)/3EH10KS/3EH15KS/3EH20KS UPS. Its uses the Motorola microprocessor with robust processing power which is capable of detecting and controlling quickly and accurately all movements of the UPS to ensure high product reliability

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EH5000 Series 3H10KS/15KS/20KS UPS


Applied to  servers, data centers, critical network devices, sensitive electronic equipment, telecom. enterprise servers,small and medium sized lans,small rooms,small precision electronic instrument.

Main Features:

 Parallel Units with a Single Output of up to 80kVA
 True N+1 Redundancy
 DSP Double-Conversion On-line Sinewave Design
 Input Power Factor Correction
 LCD Display with Advanced Monitoring for Easy UPS Management
 Programmable 50/60Hz Frequency Conversion
 Wide Input Voltage Window
 Precision Output Voltage Regulation
 Superior Brownout, Surge & Transient Protection
 Optional Extended Battery Banks & Chargers
 RS-232C, RJ45 & Optional SNMP/HTTP Agent
 WINPOWER® UPS Monitoring & Management Software

Parallel Units up to 80kVA
Businesses today rely on absolute system availability and scalability. The Must® Power EH Parallelable, N+1 Redundant On-line Uninterruptible Power Supply (UPS) provides the ideal solution. The EH Series UPS can easily be configured using individual  10, or 20kVA models, providing up to 60kVA with N+1 redundancy.Alternate parallel configurations of 6 to 80kVA are achievable if N+1 redundancy is not required.

Stand-Alone Units Lower Costs
In contrast to most modular scalable Uninterruptible Power Supplies, the EH5000 Series are stand-alone units that may be connected in parallel. This economical approach eliminates the added expense of buying cabinets to house control, power and battery modules.

True Regenerative On-line Design
The EH Series True Regenerative On-Line UPS provides the highest level of protection against the widest spectrum of power problems. The incoming AC utility source is converted to a regulated DC voltage. From this DC voltage, a new AC voltage is generated, providing clean, tightly regulated power to your equipment.

N+1 Redundancy Ensures Reliability
If your equipment has to operate without interruption or downtime, the N+1 configured Must UPS is the clear choice. Should an individual UPS require maintenance, the UPS is automatically sensed and taken offline. The user is notified through the LCD display and an audible alarm.The unit may be serviced or replaced without the remaining UPS(es) or connected load having to be powered down. Internal UPS batteries are user-replaceable and hot-swappable, again while the UPS(es) and connected equipment are in full operation.

Plus Microprocessor Control with DSP
Must Power EH UPS has been designed using advanced Digital Signal Processing (DSP) microprocessor technology. DSP technology yields the highest level of internal UPS protection, control, performance and reliability.

Plus Frequency Converter Ready
The EH UPS Plus is easily programmed for use as a 50Hz or 60Hz frequency converter, making the EH Series UPS Plus the ideal choice for worldwide power applications.

Plus RS-232, USB & SNMP/HTTP UPS Management
With the supplied WINpower® software, all models support unattended shutdown, UPS management, data logging and a power diagnostic tool. The software supports all Windows® platforms including Vista, as well as Novell NetWare® 5 & 6, LINUX and FreeBSD. UPSilon for UNIX is available at an additional cost and supports most popular UNIX platform and OS versions.Must optional SNMP/HTTP agent board provides TCP-IP addressable remote management and monitoring over any 10/100 Ethernet LAN, WAN or the Internet. The agent board installs via a communications expansion slot located on the back of every EH Series model. Client software is supplied that supports the shutdown of multiple workstations and servers via the network.


Model EH5000-3H10KS EH5000-3H15KS EH5000-3H20KS
Capacity 10kVA/8KW 15KVA/12KW 20KVA/16KW
Phase 3 phase with ground
Frequency Range 46~54HZ
Power Factor >=0.95
Acceptable Voltage 60~138 Vac
Voltage Range Line Low Transfer 304VAC +/- 3VAC
Line Low Comeback 322VAC +/- 3VAC
Line High Transfer 478VAC +/- 3VAC
Line High Comeback 361VAC +/- 3VAC
Phase Single
Voltage 220VAC/230VAC/240VAC
Voltage Regulation ± 1%
Frequency ( Synchronized Range) 46~54Hz
Frequency( Battery Mode) 50 ± 0.05 Hz
Current Crest Ratio 3:1
Harmonic Distortion <= 2% THD ( Linear Load) /<= 6% THD ( Non-Linear Load)
Output Waveform Pure Sinewave
To AC Mode 88%
To Battery Mode
Battery Type Lead acid battery
Numbers of Batteries 20 PCS
Backup Time (Full Load) Depending on the capacity of external batteries.
Recharge Time 10 hours for 80% capacity
DC Voltage 240V
Charging Current (Max.) 4.2A
Charging Voltage 274Vdc ± 1%V
AC to DC Zero
Inverter to Bypass Zero
Status Load Level / Battery Level / Battery Mode / AC Mode / Bypass Mode / Fault
Battery Mode Sounding every 4 seconds
Low Battery Sounding every second
Overload Sounding twice every second
Fault Continuously Sounding
UPS Case D x W x H (mm) 248*500*616
Net Weight(kgs) 30 38 38
Operating Temperature 0~40 °C, 20~90% relative humidity (non-condensing)
Noise Level <60dB @ 1 Meter
Smart RS-232 Windows 98/NT/2000/XP/2003/ME, Linux, Sun Solaris, IBM Aix, Compaq True64, SGI IRIX, FreeBSD, HP-UX, and MAC
SNMP (option) Power management from SNMP manager and web browser


Highest reliability and maximum performance for power sharing and redundancy

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