Variable AC & DC Power Supply

Variable Power Supplies are suitable to use in different applications such as Laboratory, Test & Service that requires wide range of adjustment range for AC or DC voltages

Galvanic isolation is provided with transformer in both AC and DC power supply systems.

Rectifier section is thyristor controlled and inverter section is IGBT controlled which is the common use in PMI power supply systems.

PMI Adjustable Power Supplies are industrial type, reliable and easy to service.

VARIABLE DC POWER SUPPLY

  • Thyristor Controlled
  • Input Transformer for Galvanic Isolation
  • Front Panel with LCD Screen and LED Indication
  • Digital Metering on LCD Screen
  • Output Voltage Range: 1VDC-900VDC
  • Output Current Range: 1VDC-400ADV

VARIABLE AC POWER SUPPLY

  • Rectifier Thyristor Controlled, Inverter IGBT Controlled
  • Output Transformer for Galvanic Isolation
  • Front Panel with LCD Screen and LED Indication
  • Digital Metering on LCD Screen
  • Output Voltage Range: 80VAC-300VAC 1 Phase or 160VAC-520VAC 3 Phase
  • Output Frequency Range: 45Hz-65Hz
  • Output Power: 5kVA-200kVA
  • Input Voltage: 220/230VAC, 1 Phase or 380/400VAC, 3 Phase
  • Output Power: 1kW-120Kw
  • Input Voltage: 380/400VAC, 3 Phase

VARIABLE AC POWER SUPPLY

GENERAL
Topology Double Conversion Online System with Output Isolation Transformer
Control Microprocessor Controlled System
INPUT
Nominal Input Voltage 380VAC/400VAC ±15% (3 Phase)
Nominal Input Frequency50 / 60 hz. ±5%
ProtectionsThermic – Magnetic, Over Current, Over Voltage
DC BUS
Nominal Voltage360 / 384 VDC
Float Voltage410 / 435 VDC
DC Ripple‹1%
OUTPUT
Output Voltage Range70-300 VAC (1 Phase) / 120 – 520 VAC (3 Phase) Adjustable
Output Voltage Adjustment Steps1VAC Steps
Voltage ToleranceIP20 / RAL7035 as standard, (Higher IP rating and different colors are available, please consult)
static± 1%
dynamic with 100% load change± 10% in 100 msec.
Output Frequency Range45-65 Hz
Output Frequency Tolerance± 0.1%
Output WaveformPure Sinusoidal
Protection Short Circuit Protection, Over Voltage Protection, Under Voltage Protection, Over Current Protection and Over Temperature Protection
DIGITAL LCD SCREEN
Display & Buttons2 x 16 LCD Display, Menu Selection and Parameter Setting Buttons
IndicatiorsInput MCB, Operating Mode, DC Voltage Low/High, Overload, High Temperature
MeasurementsOutput Voltage, Load Percentage, DC Bus, Event Codes
Set MenuOutput Voltage / Output Current / DC Bus / Date / Hour / Alarm Sound / Communication Address
Communication (Optional)Modbus, TCP/IP, Profibus Communications via RS485 port. Available on request.
SAFETY & ENVIRONMENT
Over Voltage Protection IEEE 587 4500 A, 110 Joules
Electrical Interference Reduction FCC Part 15 Class B
Electrical StandardsEN 50091-1 (Security) / EN 50091-2 (EMC)
Protection Level / Color IP20 / RAL7035 (Higher IP Protection is available as option)
MTBF 100,000 hrs. (w/out battery group)
Enclosure Material Mild Steel, Zinc-phosphate coated; 100 µm electrostatic paint; 1.5 mm thickness
Cooling Forced fans
Cable Entry Bottom
Operating Temperature -10 / +40 °C
Relative humidity 5 – 90 %
Operating Altitude Max. 2000 Mt.
Noise Level Max. 60 db

VARIABLE DC POWER SUPPLY

GENERAL
Topology Full Bridge Phase Angle Controlled Thyristor Module Rectifier
Control Microprocessor Controlled System
INPUT
Input Isolation TransformerGalvanically isolated / Primary & Secondary Earth Screened
Nominal Voltage and Tolerance 380/400 VAC ±15% (3 Phase)
Nominal Frequency50 Hz / 60Hz ±5%
Input ProtectionInput: Thermic-Magnetic Over Current Protection, Over Voltage Protection, Phase Sequence Free Operation (3 Phase), Soft Start
OUTPUT
Rated Current1A – 400A
Nominal Output Voltage1VDC – 900VDC
Static Tolerance ±1%
Dynamic Response ±10%, 5 ms
DISPLAY PANEL & MEASUREMENT
MeasurementsLCD Display for Line Voltage / Frequency, Output Voltage / Current
IndicatorsCurrent Mode, Line Failure, Fan Failure, Over Voltage, Under Voltage, Over Temperature, Rectifier Failure, Mains Available
Adjustable ParametersRectifier Output Current / Voltage
Event HistoryLast 256 events recorded and displayed on front panel and on PC via remote communication
Sound AlarmOn Warning Messages 2 Short ‘beep’ per 2 seconds
SAFETY & ENVIRONMENT
Circuit BreakersInput: Miniatur circuit breakers; Output: Miniatur circuit breakers / NH Fuse
Over Voltage Protection IEEE 587 4500 A, 110 Joules (standard)
Electrical Interference Reduction FCC Part 15 Class B
Electrical StandardsEN 50091-1 (Security) / EN 50091-2 (EMC)
Protection Level / Color IP 20 / RAL 7035 (Standard
Isolation Voltage2000VAC input/chassis and output/chassis
MTBF 100,000 hrs. (w/out battery group)
Enclosure Material Mild Steel, Zinc-phosphate coated; 100 µm electrostatic paint; 1.5 mm thickness
Cooling Forced fans
Cable Entry Bottom
Operating Temperature -10 / +40 °C. Higher operating temperatures are available, please consult
Relative humidity 5 – 90 %
Operating Altitude Max. 1000 Mt. (Higher altitudes requires de-rating, please consult )
Noise Level Max. 65 db

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