Ponovo PAV250Bi User manual

1
PONOVO POWER CO., LTD
No. 139 Jinghai Third Road, BDA, Beijing, China, 100176
Office
TEL. [phone]
E-Mail
[e-mail]
Website
www.relaytest.com / www.ponovo.com.cn
PAV250Bi
POWER AMPLIFIER USER MANUAL
VERSION: PAV250Bi-AE-1.50
D AT E : MARCH 2021
This manual is the publication of PONOVO POWER CO.,LTD. Any form of copy should
obtain the consent of it.
The manual represents the technology status at publication time. The product information,
directions and all technical specifications do not have contract binding. The company
subjects to changing the technical and configuration information without notice. The
company is not responsible for possible errors occurred in the manual.

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Content
1. Safety Precaution.................................................................................................................3
2. General Description .............................................................................................................9
3. Main Technical Specifications............................................................................................10
3.1 Power Supply ...........................................................................................................10
3.2 Use Environment......................................................................................................10
3.3 Dimension and Weight.............................................................................................11
3.4 Technical Specifications...........................................................................................11
3.5 Digital Display of Voltage Output .............................................................................12
4. Functions and Features .....................................................................................................13
4.1 Basic Principle..........................................................................................................13
4.2 Functions..................................................................................................................13
4.3 High Voltage Output.................................................................................................14
5. Panels ................................................................................................................................15
5.1 Front Panel...............................................................................................................15
5.2 Rear Panel ...............................................................................................................16
5.3 Terminal Definition ...................................................................................................17
6. How to Use Amplifier .........................................................................................................19
6.1 Wiring .......................................................................................................................19
6.2 Power On .................................................................................................................19
6.3 Simulation Voltage Output .......................................................................................19
6.3.1 Amplifier Output .............................................................................................19
6.3.2 High Power ....................................................................................................20
6.3.3 Voltage Output Display..................................................................................20
6.4 Amplifier Off..............................................................................................................20
7. Amplifier Inspection ...........................................................................................................21
8. Cables ................................................................................................................................22
9. PAP-02B Standard Chassis and Power Control Device....................................................23
9.1 Standard Chassis.....................................................................................................23
9.2 PAP-02B Power Control Device ..............................................................................23
9.3 Operation..................................................................................................................24

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1. Safety Precaution
Read User Manual before operation.
1. Check carefully all buttons are positioned correctly before startup.
1) Pause button in correct position in pressed state.
2) ON/OFF in OFF state.
3) Not press high power button (High power indicator in OFF state)
2. Main supply capacity should meet the requirement; otherwise it will affect output power
of amplifier during high current output.
3. Handle the amplifier with great care and follow the symbols on the package: fragile,
handle with care, top (an arrow pointing up), keep dry and protect from shaking.
4. Generally it’s not necessary to depress high power button (high power button light
should be off also).
5. Never operate live signal and load wires with voltage or current output to protect the
safety of equipment and personnel.
6. In case the power outlet for powering up the amplifier does not have protective
ground customer must connect the ground socket to the protective ground at the
test site
7. The voltage output of over 36V is considered as dangerous and care must be
taken
8. It’s not allowed to feed external voltage into the voltage/current output sockets
9. It’s not allowed to feed external current into the current/voltage output sockets
10. Disconnect the external circuit from the relay to avoid any influence to the test
11. Do not block the ventilation outlets

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12. Avoid the equipment to be wet by rain
13. Do not switch-on and operate the equipment in the place having explosive gas or
water vapor.
14. The 500V dangerous voltage can be in the equipment and please don’t remove
the cover by yourself
15. Please contact the manufacture for any maintenance
16. The guarantee will become invalid if kit is opened by the customer

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For Your Safety Please Note
This symbol indicates potential hazards by electrical voltages/currents caused by, for
example, wrong connections, short-circuits, technically inadequate or faulty equipment or by
disregarding the safety notes of the following sections.
Use Proper Power Cord
Only the power cord designed for the instrument and authorized by local country could be
used.
Ground The Instrument
The instrument must be grounded safely with the supplied ground cable.
Observe All Terminal Ratings
To avoid fire or shock hazard, observe all ratings and markers on the instrument and check
your manual for more information about ratings before connecting.
Do not Assemble/Disassemble the Instrument without
Authorization
The instrument should be assembled and or disassembled by professional engineers; users
are not allowed to perform related operations except for some possible replacements in this
manual.

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Do not Move or Maintain the Instrument When it is Powered On
To avoid personnel injuries, any position adjustment, maintenance or parts replacement are
forbidden when instrument is on.
Use Proper Fuse
Please use the specified fuses.
Do Not Operate With Suspected Failures
If you suspect damage occurs to the instrument, have it inspected by qualified service
personnel before further operations. Any maintenance, adjustment or replacement
especially to circuits or accessories must be performed by authorized personnel.
Keep Well Ventilation
Inadequate ventilation may cause increasing of temperature or damages to the device. So
please keep well ventilated and inspect the intake and fan regularly.
Do Not Operate in Wet Conditions
In order to avoid short circuiting to the interior of the device or electric shock, please do not
operate in a humid environment.
Do Not Operate in an Explosive Atmosphere
In order to avoid damages to the device or personal injuries, it is important to operate the
device away from an explosive atmosphere.

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Keep Product Surfaces Clean and Dry
To avoid the influence of dust and/or moisture in air, please keep the surface of device clean
and dry.
Operate the Instrument in a Suitable Environment
The best condition for optimal measurement is: 5 ℃to 40℃; less than 2 ℃/hour changing,
20% to 80% RH and the instrument should not be placed towards the air outlet.
Electrostatic Prevention
Operate in an electrostatic discharge protective area environment to avoid damages
induced by static discharges. Always ground both the internal and external conductors of the
cable to release static before connecting.
Proper Use of Solvent
Please use the solvent in compliance with instructions specified in its supplier. If necessary,
wear protective clothing, gloves and glasses to avoid any injuries.
Handling Safety
Please handle with care during transporting to avoid damages to surface, panel and parts
resulting from the falling from your hand.
NOTE: This equipment has been tested and found to comply with the limits for a Class A

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digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense.

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2. General Description
The power amplifier for digital simulator in power system is required to have high linearity,
quick response, be available to all kinds of capacitive, inductive and resistive loads.
Generally power amplifier consists of two types of amplifiers: linear power amplifier and
switching power amplifier. The linear power amplifier has the strengths of high linearity,
quick response, high accuracy, good electromagnetic compatibility and the weakness of bad
performance in high current and high power cases. The switching power amplifier is quite fit
in high current, high power devices with its strength of high efficiency, but it’s weak in
linearity, small signal noise, DC offset, drift, transient response, load driving capability
aspects, which are very difficult to fix.
PAV250Bi is specially designed for R&D of power system simulation. It is adapt to various
capacitive and inductive load. There are 6-phase voltage outputs with max. 250V rms per
phase and max. output power 75VA..

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3. Main Technical Specifications
3.1 Power Supply
Power supply
3 phase 380V AC
50/60Hz
Power capacity
750VA
3.2 Use Environment
Operating temperature: 25 deg±10 deg
Storage Temperature: -25 deg—+70 deg
Related humidity: 20%RH—85%RH
Pressure: 86 kPa—106kPa
EMC (Emission) IEC-61000-3-2/3
EMC (immunity) IEC-61000-4-2/3/4/5/6/11
Safety IEC/EN 61010-1:2010
UL 61010-1:2012
CAN/CSA-C22.2 No. 61010-1-12
Surrounding conditions: No dust, vibration or serious electromagnetic field interferes.
The equipment is not recommended to be used out of laboratory.
Avoid the equipment to be used online out of laboratory in severe environment.

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3.3 Dimension and Weight
Dimension: 4U
Weight:20kg
3.4 Technical Specifications
Voltage output 6x0～250V RMS
Max. output power ＞75VA (250V output)
Input signal-Analog, Gain
Standard: 0~7.07V RMS (±10Vpek), Gain: 40V/V
Option: 0~11.31V RMS (±16Vpek), Gain: 24V/V
Input signal-Digital (optional) Support Aurora protocol communication
Voltage accuracy <0.2%(5V-250V)
Voltage typical accuracy <0.1%
Differential input impedance 20k
Harmonic distortion ratio ≤0.1%
Linearity ≤0.2%
Phase accuracy 0.2°
Frequency range DC-3kHz±1dB
Step response <80us
Input/output delay <80us

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3.5 Digital Display of Voltage Output
The RMS of voltage output can be displayed in real-time on the panel.

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4. Functions and Features
4.1 Basic Principle
PAV250Bi consists of the below parts mainly:
1) High-speed differential input circuit for amplifier;
2) High-performance voltage power amplifier module;
3) Distortion detection and alarm circuit. Each amplifier has the overload or output
distortion detection circuit. When the overload or short-circuit situation disappears, the
amplifier will resume to work automatically.
4) Temperature protection circuit. It will terminate the amplifier as soon as the
temperature of the amplifier reaches dangerous degree and will let the amplifier resume to
work automatically when it has been cooled down to a reasonable level.
5) Temperature-controlled fan. Fan will work at low speed if amplifier temperature is
certain low, which is benefit for prolonging its service life and reducing working noise.
4.2 Functions
1) The differential input circuit can reduce the influence of the common mode noise to make
it possible that use long wires to connect across the amplifier and signal source, which will
reduce mutual effects between all amplifiers during output to guarantee the operation safety
of the simulator.

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2) The output voltage distortion and overload auto-detection circuit will protect the voltage
amplifier output overload or short-circuit automatically. It automatically closes amplifier
input/output, and the overload alarm in rear panel lights. After overload and short-circuit
disappear, it restores to working status.
3) Pause control function (PAUSE). The pause button on the front panel can cut off the
signal input of the amplifier, pressing the pause button to pause the output of the amplifier.
And resume the output after pressing Pause again.
4) When the overheat protection is activated, the input of the amplifier will be terminated and
the “Overheat” alarm light on the front panel will be on.
4.3 High Voltage Output
In normal situation, the high power control button is located in OFF status and the indicator
is off. The voltage range of amplifier is 0～120V. When pressing ON button, the high power
control indicator lights and the voltage range is 0～250V.
Note:
1. When the voltage is low, it is unnecessary to use high power output.
2. Exit the high power function after the testing is finished. Working in high power output
status in long time is not permitted.
3. Don’t switch on/off high voltage control button while there is output.

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5. Panels
5.1 Front Panel
1
23
4
5
67
1. Power Switch: Power on/off
2. Display: Show the current/ voltage value (The current output is showing on above
picture.)
3. Indicator: The working status will be showing.
4. High power button: Switch the voltage between 0~120V and 0~250V
5. Pause button: Press it and light in red. The current and voltage output will be paused.
The output will be resumed after press Pause button again.
6
＊
.Voltage output 1: It is connected with the voltage input of the test object.
7
＊
. Voltage output 2: It is connected with the voltage input of the test object.
＊
: There are both current/voltage output in the front and rear panels. Voltage output on either
panel can be configured.

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5.2 Rear Panel
8
9
10
11
12 13
14
8. Power socket: Please use the power cable supplied by PONOVO (The cable with
special port must be used).
9 Earth ground: It should be grounded with earth during testing.
10
＊
. Voltage output: It is connected with the voltage input of the test object.
11
＊
. Voltage output: It is connected with the voltage input of the test object.
12. Contact signal output: Please refer to the terminal definition below.
13. Control signal Input: Please refer to the terminal definition below.
14. Voltage signal Input: Please refer to the terminal definition below. Voltage output on
either panel can be configured.

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5.3 Terminal Definition
Contact Signal Output
Terminal No.
1
2
3
4
5
6
7
8
Output Mode + -
Function
Definition
Overheat alarm
signal output
Voltage output
overload/short-circuit
alarm signal
Pause signal
output
Reserved
Control Signal Input
Terminal No.
1
2
3
4
5
6
Output Mode
+
+
+
COM-
+
-
Function
Definition
Pause control +12V
input
Test control
+12V input
Common
terminal
Test signal input
Note: Pause control and calibration control both are valid for high level input (5-15V).

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Voltage Signal Input
Terminal No.
1
2
3
4
5
6
Channel
VA
VB
VC
+
-
+
-
+
-
Function
Definition
VA signal
input +
VA signal
input -
VB signal
input +
VB signal
input -
VC signal
input +
VC signal
input -
Terminal No.
7
8
9
10
11
12
Channel
VD
VE
VF
+
-
+
-
+
-
Function
Definition
VD signal
input +
VD signal
input -
VE signal
input +
VE signal
input -
VF signal
input +
VF signal
input -

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6. How to Use Amplifier
6.1 Wiring
The amplifier current/ voltage input signal terminals should be connected with the simulation
system’s D/A output signal correctly.
Please refer to the Terminal Definition for detail.
Pay attention that the shielded layer at simulation system should be grounded.
6.2 Power On
Check the power supply is normal before energizing the amplifier and the polarity of input
signal is correct. After all points are confirmed correctly, turn on the amplifier, the power
supply indicator will light and run indicator will flicker. It indicates the amplifier works normal.
6.3 Simulation Voltage Output
See the panel of voltage output terminals in paragraph Terminal Definition for details.
6.3.1 Amplifier Output
Press the pause button on the panel or operate the remote control to send the pause signal,
connect the current/voltage output terminals to corresponding terminals of the test object
respectively, and then inactivate the pause function and input the simulation signal, the
amplifier will enter into simulation status.

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6.3.2 High Power
Note:
1. Generally don’t’ press high power button (The high power indicator is off.).
2. Never operate live signal and load cables with voltage output to protect the safety of
equipment and personnel.
6.3.3 Voltage Output Display
Voltage output will be display in real time on the front panel.
6.4 Amplifier Off
After all testing is finished, please terminate the simulator signal input, press Pause button
and turn off the power of the amplifier.