EMi3-Servomotor Power Conditioner 5kVA – 1300 kVA

Constant stabilisation and savings in overvoltages

Issues such as the constant variation of loads connected to the mains, interference generated by the loads themselves, possible failures in distribution lines, voltage drops due to the length of the lines and problems caused by lightning make it impossible to have an electricity supply with a stable voltage. EMi3 servomotor voltage stabilisers are the ideal solution to protect sensitive equipment from constant voltage fluctuations in the power supply.

Moreover, in the event of drops in the total consumption of a power line, voltage tends to rise, causing overconsumption in the equipment that remains connected. By using a stabiliser, overconsumption can be eliminated, thereby producing significant cost savings and ensuring that connected loads function within the voltage range for which they were designed.

The operating principle is based on regulation, by means of a control circuit, of the variable autotransformer that supplies the voltage for the booster transformer in series, either in-phase or in phase opposition, to achieve the rated value of the output voltage.

EMi3 stabilizer model has been designed to operate in fluctuated mains and to safeguard the critical loads, in particular, those ones with a complicated nature: high inrush start-up currents, high reactive character, high powers, etc. EMi3 can withstand long overloads and it has high output accuracy (up to ±1%), they are manufactured in single and three-phase configuration with independent phase regulation or average regulation in the three phases depending on the model.

Main Features

  • Power range, single and three-phase, up to 1300kVA
  • Fast and efficient toroidal autotransformers for the entire power range
  • Output accuracy better than 1% (adjustable from ±0,5 % up to ± 5 %)
  • In three-phase units, independent regulation per phase, unaffected by imbalances.
  • Input regulation range ±15% standard (other regulation range on request)
  • High efficiency, up to 97.5%
  • High-speed regulation, up to 70 V/s
  • Full LCD display for stabiliser control and monitoring
  • Guaranteed output stability through a MosFET servo control
  • Unaffected by line voltage harmonics; stabilisation based on true RMS
  • Stable operation in the event of load and/or voltage variations
  • Wide operating temperature range (-10°C to +55°C)
  • Dry contact interface (2 standard and up to 11 optional)
  • Mechanically optimised design, easier maintenance
  • Transient overloads of up to 1000% of the rated admissible
  • Highly robust and reliable (high MTBF)
  • Quiet operation
  • Overvoltage surge suppression protection

Options

  • Output current, power and overload measurement
  • Maximum and minimum output voltage protection
  • Manual and automatic bypass
  • Overload contactor
  • Communications and relay module
  • Other regulation ranges
  • Galvanic isolation transformer
  • Output circuit breaker
  • Extended ambient operating temperature from -20ºC

SPECIFICATION TABLE

TECHNICAL SPECIFICATIONS
MODELEMi3
INPUTVoltageSingle-phase 120 / 220 / 230 / 240 V
Three-phase 3×208 / 3×220 / 3×380 / 3×400 / 3×415 V (3Ph + N) (6)
Range±15 (1)
Frequency47.5 ÷ 63 Hz
OUTPUTVoltageSingle-phase 120 / 220 / 230 / 240 V
Three-phase 3×208 / 3×220 / 3×380 / 3×400 / 3×415 V (3Ph + N) (6)
Accuracy± 3% (adjustable between 1% ÷ 5%)
Output voltage setting± 10%
Frequency48 ÷ 63 Hz
Regulation speedUp to 70 V/s
PerformanceBetween 96.5% and 97.5%
Injection of voltage harmonic distortion<0.2%
Voltage disconnection value (2)Adjustable
Admissible overloadUp to 200% for 20 s
Possible load variation0 ÷ 100%
Power factor influenceIndependent
INDICATORSFront panelLCD display (2×16 characters) + 4 status LEDs
COMMUNICATIONRS-232 (3)Standard
2 Dry contactsStandard
Free slot (3)One
GENERALSOperating temperature -10° C ÷ +55° C (1)
Storage temperature -20° C ÷ +85° C
CoolingNatural or forced depending on power rate
Level of acoustic noise at 1 metre<45 dB(A) (4)
Relative humidityUp to 95%, non-condensing
Maximum operating altitude2,400 m.a.s.l.
Mean time between failures (MTBF)60,000 hours
Mean time to repair (MTTR)30 minutes
STANDARDSSafetyIEC-62103
Electromagnetic compatibility (EMC)EN-61000-6-4; EN-61000-6-2
Quality and environmental managementISO 9001 and ISO 14001
(1) Other ranges available on request (2) With optional voltage maximum-minimum (3) Mutually exclusive ports
(4) Forced from 20 kVA for single phase and 55 kVA for three-phase (5) <65 dB(A) for models with forced ventilation (6) Ask for other settings

SERIES TABLE

RANGE
 MODELPOWER
(kVA / kW)
DIMENSION
(D x W x H mm)
WEIGHT
(Kg)
 EMi3 M 5-25 590 x 340 x 58545
 EMi3 M 7.5-27.5 590 x 340 x 58559
 EMi3 M 10-210 590 x 340 x 58560
 EMi3 M 15-215 905 x 460 x 705115
 EMi3 M 20-220 905 x 460 x 705119
 EMI3 M 25-225 905 x 460 x 705196
 EMi3 M 30-230 905 x 460 x 705209
Nomenclature, dimensions and weights for models: Input 230 V 50 Hz / Output 230 V 50 Hz and input range +/-15%.
 MODELPOWER
(kVA / kW)
DIMENSION
(D x W x H mm)
WEIGHT
(Kg)
 EMi3 T 15-415 905 x 460 x 705126
 EMi3 T 20-420 905 x 460 x 705169
 EMi3 T 35-435 905 x 460 x 705224
 EMi3 T 55-455 650 x 615 x 2120374
 EMi3 T 70-470 650 x 615 x 2120495
 EMi3 T 90-490 850 x 615 x 2120533
 EMi3 T 110-4110 850 x 615 x 2120577
 EMi3 T 140-4F140 850 x 1615 x 2120857
 EMi3 T 175-4F175 850 x 1615 x 21201159
 EMi3 T 220-4F220 850 x 1615 x 21201227
 EMi3 T 275-4F275 850 x 1615 x 21201298
 EMi3 T 330-4F330 850 x 1615 x 21201450
Nomenclature, dimensions and weights for models:
– From 15 kVA to 110 kVA: Input 3×400 V 50 Hz / Output 3×400 V 50 Hz, input range +/-15% and common regulation. (Independent regulation per phase available on request).
– From 140 kVA to 330 kVA: Input 3×400 V 50 Hz / Output 3×400 V 50 Hz, input range +/-15% and independent regulation per phase.
(1) Others powers upon request.

Ask for Assistance

Selecting the right power supply for your application is not a small task. Let our technical sales engineers guide you through the process of choosing the right solution for your needs.

Below some parameters usually required to size and select the right power supply:

  • Power & control requirements
  • Output & Input Voltage / Multioutput Voltage / Variable Voltage
  • Redundancy level
  • Mounting
  • Inrush Current
  • Environmental specifications (Temperature, altitude, vibration, shock)
  • Specific Industries Standards (Railway, Military, Medical)

Contact Our Team

Email us at sales@heliosps.com.au, we will get back as soon as we can.

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