Master HE

Three Phase Output AC UPS 100kVA – 800kVA

Master HE series is available from 100 to 800 kVA. The UPS feature a new on-line double-conversion technology utilising IGBT and DSP (Digital Signal Processor) control to provide maximum protection, power quality and green energy for any type of application including primary datacenters, disaster recover sites, telecoms rooms, industrial processes and security applications.

High efficiency stands for higher active power available if compared with legacy UPS thanks to output unitary p.f. Nominal power is granted with no downgrading independently from operating temperature.

Advanced supervision

Master HEP series UPS have a front panel graphic display providing UPS information, measurements, status updates and alarms in different languages, with wave form displays including voltage/current and provide a kWh reading that can be used to measure IT loads and calculate a datacenter PUE (power usage effectiveness) ratio.

Battery care system

Master HE series UPS include a range of features designed to prolong battery life and reduce their usage.

Output isolation transformer

  • Better load protection from DC/Battery problems
  • The UPS can be supplied from two independent lines
  • Fault on DC bus will not affect the by-pass availability
  • High Short circuit current
  • Higher immunity to harmonics or energy backfeed generated by the load.

Zero impact source

Master HE has a zero impact on connected power sources – grid networks or generators:

≤ 3% input current distortion
Input power factor 0,99
power walk-in function – to ensure a progressive rectifier start-up
start-up delay function – to restart the rectifier when the mains power supply is restored.

Smart Grid Ready UPS
Master HE series UPS are ‘Smart Grid Ready’ and can be used within an energy storage solution, whilst simultaneously operating at the highest levels of efficiency and automatically selecting the most efficient operating mode based on the state of the lower grid network or generator supply. The UPS are designed to electronically interface with energy management systems within an ‘intelligent’ Smart Grid application.


MHE 100100100380 – 400 – 415 Vac three-phase
MHE 120120120380 – 400 – 415 Vac three-phase
MHE 160160160380 – 400 – 415 Vac three-phase
MHE 200200200380 – 400 – 415 Vac three-phase
MHE 250250250380 – 400 – 415 Vac three-phase
MHE 300300300380 – 400 – 415 Vac three-phase
MHE 400400400380 – 400 – 415 Vac three-phase
MHE 500500500380 – 400 – 415 Vac three-phase
MHE 600600600380 – 400 – 415 Vac three-phase
MHE 800800800380 – 400 – 415 Vac three-phase


Voltage380 – 400 – 415 Vac three-phase
Soft start0 – 100% in 120’’ (selectable)
Frequency45 – 65 Hz
Frequency tolerance± 2% (selectable from ± 1% to ± 5% from front panel)
Power factor at full load> 0.99
Current distorsionthdi ≤ 3%
Nominal Voltage380 – 400 – 415 Vac three-phase + N
Nominal Frequency50 or 60 Hz (selectable
Number of phases3 + N
Nominal voltage380 – 400 – 415 Vac three-phase + N (selectable)
Frequency50 Hz / 60 Hz
Static stability± 1%
Voltage distortion< 1% with linear load / < 3% with non-linear load
Overload110% for 60’; 125% for 10’; 150% for 1’
Ripple currentZero
Recharge voltage
 -0,5 Vx°C

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