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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EH9115 Series 3 Phase Low frequency UPS 10-80KVA


EH 9115 series provides maximum protection for vital ‘mission-critical' networks, security applications (electro-medical) and industrial applications thanks to its outstanding mechanical and electrical design. The UPS has an extremely outstanding mechanical and electrical design: isolation transformer on the inverter, high short-circuit current and sinusoidal absorption with low THDi.

Main Features:

 High accuracy and reliability due to the double DSP control system
 low power consumption up to 94%
 cold start directly and smart operation for users.
 simple to install:capability to install the UPS into any distribution system (neutral not required on rectifier input)
 capability of regulating the output voltage (to offset voltage drops down long cable runs)
 built-in automatic and manual battery test feature, battery deep discharge protection and temperature compensating charger
 back-feed protection: to avoid energy feeding back into the mains supply should a fault occur
 reliable, filtered, stabilized and regulated sine wave output (double conversion on-line technology )with filters for atmospheric

disturbance suppression- high reliability, full microprocessor control with no-break static and manual bypasses,extremely high short-circuit

current to ensure compatibility with the most difficult transformer applications (lighting, drives and industrial processes) and an isolation

transformer on the inverter output- maximum reliability and power availability- high level diagnostics: event log with messages, status,

measurements and alarms - available from the built-in LCD in several languages


MODEL  EH9115-10K EH9115-20K EH9115-30K EH9115-40K EH9115-60K EH9115-80K
Voltage 380/400/415 Vac±20%,3 Phase +N (3 phase and 4 wire)
Input Frequency 50/60 Hz ±10%
Power Factor >=0.95
phase 3phase
Input voltage protection Electronic Input out of tolerant protection
AC Voltage Regulation (Batt.Mode) 380/400/415 Vac ±1%,3 Phase +N
Voltage tolerant (balanced load:+/- %1)(unbalanced:+/- %2)(full load:+/-%5)
Voltage regulation time After full load: 25 ms
Frequency Range 50Hz (60Hz special product)
Frequency tolerant (synchron:+/-%2) (free running:+/-%0,2)
Efficiency (100% load) >85% >90%
Harmonic Distortion <=3% THD (Linear Load),<=5% THD(Non Linear Load)
Transfer Time AC to DC Zero
Inverter to Bypass 4 ms (Typical)
Waveform (Batt. Mode)  Pure Sine Wave 
Crest faktor 3:1
Battery Type & Numbers Maintenance free lead-acid batteries / 12V x 32pcs
charge current 8A
Battery Start Yes, UPS can be started without AC source.
Battery protection Automatic circuit breaker
Battery voltage protection Electronic 3 level alarms
Overload protection (>130-%150 load :60 seconds ) (>%150 load :30 seconds)
Short circuit protection Electronic protection
Output voltage protection Electronic out of tolerant protection
Dimension, D X W X H (mm) 600x550x1250 780x700x1520
Net Weight (kgs)  200 270 330 360 430 500
Humidity 0% - 90% (NonLCCondensing)
Temperature 0 – 40°C
Overtemperature protection Electronic protection
Noise Level  < 58 dBA (At 1 M) < 63 dBA (At 1 M)
Altitude <1000 M Above Sea Level
Remote Control Dry contact, RS232
. All specifications mentioned above are subject to change without prior notice.


Highest reliability and maximum performance for power sharing and redundancy. Must UPS power systems have been explicitly designed to meet the demands of today's industrial processes and special projects where reliability, availability and serviceability are equally as important as product quality and technical competence.

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