POWER AMPLIFIERS 4 QUADRANTS 3x500 VA to 3x1500 VA - THREE-PHASES

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1 PERFORMANCES High accuracy High stability Fast transients High inrush current facilities Wide bandwidth Very low distortion Quadrant change without transition Very low output impedance Low noise RS232 APPLICATIONS One or three insulated outputs AC, AC+DC, DC Avionic networks Hz Industrial networks Hz Tests in accordance with standards ABD / MIL-STD-704 Disturbed networks AC or DC motor simulation Non-linear loads Harmonics generation DESCRIPTION PA-3x500, PA-3x750 and PA-3x1500 power amplifiers are amplifiers so-called "4 quadrants" AC + DC three-phase operating in voltage regulation. For each phase: o An analog input receives the signal pilot of amplitude 0~±10 V peak, o After insulation, the equipment amplifies this signal depending on the gain range selected and on the programmed gain, with a very short propagation delay, o Two analog and isolated outputs return images of voltage and current at the output of the equipment with an amplitude of 0~±10 V peak. Built in linear technology, these amplifiers have high dynamics, very low distortion over a wide frequency band and a wide bandwidth. This technology also allows them to provide overpower up to 4 times their rated power. Linear amplifiers technology allows a quick and easy integration for "Real time" or "Hardware In the Loop" applications in combination with simulators such as Opal-RT, dspace or National Instruments. Entirely self-sufficient with their local control on touch screen, they can be controlled remotely from a supervisor system via an Ethernet or RS232 link for an easy integration in a complex test system. Document ref. FT-PA-3x0k5-3x1k5-Three phases-en V3 - Page 1 / 7

2 PERMANENT OPERATING AREAS IN AC These diagrams express the relationship between the current and the voltage for different values of power factor. X-coordinates express the voltage as a percentage of the range. Y-coordinates express the current percentage of the rated current of the range. Continuous operation is allowed below curves. Limitations are due to the heating of the power transistors. Operation above diagrams will result in: An immediate switch-off by over-current protection if current is above the limits, A break after a delay by thermal protection in case of overheating of the power parts. These features are for each phase. Blue trace: dephasing between voltage and current is null. The power factor PF is equal to 1 (generation on resistive load). Green trace: dephasing between voltage and current is 90 (π / 2). The power factor PF is equal to 0 (generation on inductive load). Red trace: dephasing between voltage and current is 180 (π). The power factor PF is equal to -1 (full absorption). Connection IN-SERIES of amplifiers outputs is allowed in DC only. Connection IN PARALLEL of amplifiers outputs is not allowed. Document ref. FT-PA-3x0k5-3x1k5-Three phases-en V3 - Page 2 / 7

3 POWER OUTPUT POWER AMPLIFIERS 4 QUADRANTS FEATURES OF AMPLIFIERS Notes: Power PA-3x500 PA-3x750 PA-3x1500 Rated power 3 x 500 VA 3 x 750 VA 3 x 1500 VA Ranges: voltage (VRMS) / current (ARMS) 50 V / 10 A 100 V / 5 A 150 V / 5 A 300 V / 2.5 A 150 V / 10 A 300 V / 5 A Ranges: gain variation 0 to 7 0 to 14 0 to 21 0 to 42 0 to 21 0 to 42 Voltage accuracy Typical 0,1% of range + 0,1% of programmed value Resolution 12 bits Current accuracy Typical 0,1% of range + 0,1% of programmed value Resolution 12 bits Voltage distortion at full output power Typical < 0,2% < 0,5% Voltage regulation for a mains variation of +6% / -10% < 0,1% of rated voltage Voltage regulation for a current variation from 0 to 100% < 0,1% of rated voltage Noise RMS 0,02% of rated voltage peak to peak 0,3% of rated voltage Bandwidth Full scale DC 5 khz Small signals at -3 db 25 khz Variation with a square signal pilot Rise time 10% / 90% < 10 µs Fall time 10% / 90% < 10 µs Transfer time < 15 µs Transition from Q1 to Q4 < 10µs Variation according temperature Typical 50 ppm/ C 100 ppm/ C Stability after 15 minutes of operation < 0,05% of rated voltage Insulation of the outputs versus case ground Measurement at 500 VDC > 100 MΩ Images analog outputs (1) Voltage image 7,07 VRMS Current image 7,07 VRMS Accuracy of the measurements displayed on the touch screen Voltage measurement 0,3% of range + 0,3% of measure Current measurement 0,3% of range + 0,3% of measure Protections Against overload Limitation of voltage (2) Against output short-circuit Cut of the power output (3) Against overheating Cut of the power output (4) (1) The analog outputs are isolated from power outputs. (2) In case of temporary overload, the voltage decreases to limit the current. (3) The output is switched off and will have to be reactivated by the touch screen or an external command. (4) A temperature sensor is placed on every power part. It switches off the output of the amplifier in case of overheating. Document ref. FT-PA-3x0k5-3x1k5-Three phases-en V3 - Page 3 / 7

4 ENVIRONMENTAL PILOT SIGNAL INPUT MAINS POWER AMPLIFIERS 4 QUADRANTS FEATURES (following) Mains network Number of phases Single-phase Phase + Neutral + Earth Voltage 230 VRMS ±10% Frequency 47 to 63 Hz Mains current PA-3x500 PA-3x750 PA-3x1500 at full output power 9 ARMS 14 ARMS 28 ARMS Protection Magneto thermal breaker Inrush current Limited to 2 x current Dielectric strength of the mains input versus the output connected to the case ground Measurement at 2500VRMS / 50Hz Courant < 10 ma Input signal amplitude (external feature) Insulation > 10 MΩ (5) Voltage for full output scale 7,07 VRMS / ± 10V peak. voltage ± 15 V peak Input impedance 10 kω Input signal frequency Fundamental DC 5kHz Harmonics (small signals) 50 khz Notes: (5) The analog inputs are isolated from power outputs. ENVIRONMENTAL FEATURES Metallic parts treatment Front panel Rear panel Temperature and humidity Storage temperature Operating temperature Relative humidity Sound level (fans at full speed) Measured at 1 m of front panel Marking Marking Index of protection Aluminum painted RAL7021 Black anodized aluminum -10 C à +85 C +0 C à +40 C 10% - 90% non-condensing < 70 dba CE IP20 Document ref. FT-PA-3x0k5-3x1k5-Three phases-en V3 - Page 4 / 7

5 MECHANI -CAL POWER AMPLIFIERS 4 QUADRANTS MECHANICAL FEATURES PA-3000 Dimensions and weight PA-3x500 PA-3x750 PA-3x1500 Width 483 mm (19 inches) Depth (connectors excluded) 600 mm Height 222 mm (5U) 222 mm (5U) 356 mm (8U) Weight 59 kg 59 kg 80 kg Rear panel PA-3x Non-contractual picture Mains socket (connector is provided) Earth pin Output power Ph1 + Ph2 + Ph3 + Neutral + Earth (connector is provided) Insulated BNC socket, input of «Pilot» signal for Ph1 Insulated BNC sockets, output of images of voltage and current Analog input and outputs for Ph3 RJ45 socket for Ethernet communication SUBD female 9 pins pour serial communication RS232 Fans with variable speed. Internal temperature is measured and speed adapted to heat to be dissipated 6 Analog input and outputs for Ph2 Document ref. FT-PA-3x0k5-3x1k5-Three phases-en V3 - Page 5 / 7

6 LOCAL OR REMOTE CONTROL Managed by a Control Board, the amplifiers have two operating modes: Local control: The control device equipped with a graphical touch screen disposed in front panel gives access to all the control functions and the display of the measures. Remote control: The control device has one TCP/IP Ethernet interface and two serial links, RS232 and RS485, for a control through a remote PC. Control can be done either using Puissance+ OPS3 software (not supplied), either directly via instructions TCP/IP or RS232 / RS485 using customer software. LOCAL CONTROL: Amplifier On the main screen, graphical objects (boxes, input boxes and buttons) are to set it up: Gain range selection, Balanced or unbalanced threephase system, Output ON or OFF for each phase, Gain for each phase. When system is unbalanced, gain of each phase can be modified. When system is balanced, gain of phases 2 and 3 is the same as gain of phase 1. Fields return the instantaneous values of voltage, current and power. LEDs indicate status: thermal fault or overcurrent detected. An acknowledge button is used to restart output in case of overcurrent detected. LOCAL CONTROL: Configuration This screen is for current management. User can define maximum current for the three phases and what to do in case of overcurrent at the end of the programmed duration: Limit the voltage decreases to limit current to the programmed value, Stop the outputs are switched off. Document ref. FT-PA-3x0k5-3x1k5-Three phases-en V3 - Page 6 / 7

7 LOCAL CONTROL: Calibration Protected by a password, this panel is to adjust the gain of each phase. When calibration is well done, output amplitude will be the same on each phase if the input amplitude is the same. This calibration requires an external measurement system. In the same way, current and voltage measurements of the amplifier can be calibrated. ORDER INFORMATION FOR PA-3x500 PA-3x500-AC/DC-100V-10A-2G Amplifier 3x500 VA, max voltage (L-N) 100VRMS, max current 10A, 2 ranges ORDER INFORMATION FOR PA-3x750 PA-3x750-AC/DC-300V-5A-2G Amplifier 3x750 VA, max voltage (L-N) 300VRMS, max current 5A, 2 ranges ORDER INFORMATION FOR PA-3x1500 PA-3x1500-AC/DC-300V-10A-2G Amplifier 3x1500 VA, max voltage (L-N) 300VRMS, max current 10A, 2 ranges Specification may change without notice Document ref. FT-PA-3x0k5-3x1k5-Three phases-en V3 - Page 7 / 7