Training course antenna and pedestal group (apg)

Содержание

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The data and information, in its totality or partial expression, contained

The data and information, in its totality or partial expression, contained

in this document are property of Indra Sistemas, S.A. This data and information cannot be disclosed totally or partially to third parties. The copy, reproduction, public communication, dissemination, total or partial distribution, modification or assignment will require the prior written authorization of Indra Sistemas, S.A. Its content cannot be used for different purposes to those for which it is provided, its use being limited to the execution of the Program it is supplied for.

Warning of Confidentiality

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Signature Sheet

Signature Sheet

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Changes Record

Changes Record

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Acronyms

Acronyms

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Acronyms

Acronyms

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Acronyms

Acronyms

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1 Introduction Block Diagram Functional Description and elements System composition

1

Introduction

Block Diagram
Functional Description and elements
System composition

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Block Diagram PSR Antenna MSSR Antenna (co-mounted) Rotary Joint Antenna Support Introduction

Block Diagram

PSR Antenna

MSSR Antenna
(co-mounted)

Rotary Joint

Antenna Support

Introduction

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Functional Description and Elements Antenna subsystem transmits and receives RF signals

Functional Description and Elements

Antenna subsystem transmits and receives RF signals

and consists of:
A reflector.
Two feedhorns.
Polarizer.
Pedestal subsystem performs antenna rotation and consists of:
Two motors.
Two gearboxes.
Two Electrical Clutches.
Rotary joint subsystem consists of a fixed and a moving part and provides:
7 RF channels: ? 4 for PSR (2 for TGT in waveguide and 2 for WX in coaxial)
? 3 for MSSR (coaxial)
18 AC/DC slip-rings.
2 encoders.
The rotary joint is the interface between the APG and the sensor (for transmission and reception).
Reception: coaxial cable for weather low/high beams. Waveguide for target high beam and target low beam.
Transmission: Waveguide through low beam path.
The high target channel is directed to the sensor through coaxial by means of a coupler after the rotatory joint.

Introduction

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System Composition APG Performance Antenna (RAMET): Gain > 34 dB. Beam

System Composition APG Performance

Antenna (RAMET):
Gain > 34 dB.
Beam Width =

1.45 ± 0.05 degrees.
2 elevation beams (HI-LOW).
2 polarizations.
2 Ch for Target + 2 Ch for Weather.
Pedestal (RAMET):
Configurable Rotation Speed.
Dual Motors of 5.5 kW.
Includes Antenna Support.
Rotary Joint (Cobham, Sivers Lab - Sweden):
7 RF channels (4 PSR + 3 MSSR).
Dual Encoders.

Introduction

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2 APG Physical and Functional Description Antenna Pedestal Rotary Joint

2

APG Physical and Functional Description

Antenna
Pedestal
Rotary Joint

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Antenna APG Physical and Functional Description

Antenna

APG Physical and Functional Description

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Antenna subsystem is a COTS element made by RAMET and performs

Antenna subsystem is a COTS element made by RAMET and performs

RF signal transmission and reception in S-band (2.7 a 2.9 GHz).
This subsystem is made up the next elements:
Reflector, provides an square cosecant elevation pattern.
Two feedhorn assembly, the top one (low beam) transmits and receives, and the bottom one (high beam), only receives.
Two polarizers, provides vertical linear and right-hand circular polarization (transmission and reception).
Two target channels (w/g) and two weather channels (coaxial).
Mechanical Tilt.
In addition, it is made by optional elements such as:
Possibility of co-mounting a LVA antenna.
An obstruction light.
A lightning rod.
Polarization changing and antenna turning monitoring.

Antenna Introduction

APG Physical and Functional Description

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Pedestal Features APG Physical and Functional Description

Pedestal Features

APG Physical and Functional Description

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Pedestal Features APG Physical and Functional Description

Pedestal Features

APG Physical and Functional Description

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Antenna Physical Diagram APG Physical and Functional Description

Antenna Physical Diagram

APG Physical and Functional Description

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Antenna element carries on the RF transmission (two pulses: a non-modulated

Antenna element carries on the RF transmission (two pulses: a non-modulated

short pulse and a NLFM long pulse generated on EPG and amplified by the transmitter), and the reception of the corresponding echoes.
Transmission is performed by low beam (feedhorn assembly) and by means of the reflector, the transmission will be according to cosecant square pattern.
Reception is performed by both beams (high and low). In the typical case:
High beam reception used for nearby coverage (reducing ground clutter).
Low beam reception used to further coverage.
Every horn has two channels:
2 wave guide channels ? target high and low beams
2 coaxial channels ? weather high and low beams
Antenna operates with two different polarizations in order to improve detection in case of weather clutter.
Polarization selectable: linear or circular.

Antenna Operation

APG Physical and Functional Description

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Antenna Azimuth Diagram APG Physical and Functional Description

Antenna Azimuth Diagram

APG Physical and Functional Description

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Elevation diagram: cosecant squared pattern Antenna Elevation Diagram APG Physical and Functional Description

Elevation diagram: cosecant squared pattern

Antenna Elevation Diagram

APG Physical and Functional Description

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PSR antenna can transmit with two different polarizations. Features: Transmission polarization:

PSR antenna can transmit with two different polarizations.
Features:
Transmission polarization: Linear vertical.

Right handed circular ? clockwise rotation.
Polarizer transmits and receives linear or circular polarization.

Antenna Polarization

APG Physical and Functional Description

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POLARIZATION ADVANTAGES. Symmetric objects (such as raindrops): Reflects circularly-polarized waves with

POLARIZATION ADVANTAGES.
Symmetric objects (such as raindrops):
Reflects circularly-polarized waves with the opposite

sense of rotation. There is one reflection of the wave.
Reflects lineal polarization in the same sense as it was sent.
Asymmetrical objects (such as aircraft):
Reflects circularly-polarized waves with the same and the opposite sense of rotation because they are odd and even numbers of reflections.
Reflects lineal polarization in the same sense as it was sent.
Notice that transmitted circular polarization:
3 dB of losses in target echoes.
>20 dB in spherical target echoes.

Antenna Polarization

APG Physical and Functional Description

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Antenna Polarization APG Physical and Functional Description

Antenna Polarization

APG Physical and Functional Description

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Antenna Features APG Physical and Functional Description

Antenna Features

APG Physical and Functional Description

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Antenna Features APG Physical and Functional Description

Antenna Features

APG Physical and Functional Description

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Pedestal APG Physical and Functional Description

Pedestal

APG Physical and Functional Description

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Pedestal Introduction Pedestal: Electromechanical system which able to give continuous rotation

Pedestal Introduction

Pedestal:
Electromechanical system which able to give continuous rotation to the

antenna.
Consists of a mobile case mounted on a large bearing and supported in its base by a fixed case which, at the same time, supports both power lines (motor + Electrical Clutch).
The pedestal shall allow the assembly of a rotary joint that transmits and receives the RF signals, AC/DC signals and angular transmission signals from the fixed case to the mobile case.

APG Physical and Functional Description

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Pedestal Physical Diagram APG Physical and Functional Description

Pedestal Physical Diagram

APG Physical and Functional Description

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Pedestal Description and Elements The pedestal subsystem is a electromechanical system

Pedestal Description and Elements

The pedestal subsystem is a electromechanical system which

performs continuous antenna rotation (even with a co-mounted MSSR antenna).
The system consists of the next elements:
Movement transmitter system:
Two 5.5 kW motors with gearbox + coupling Electrical Clutch + pinion and bearing ring.
Intermediate element:
Connects the frame and the antenna drive mechanism with the antenna support.
Electrical and Mechanical interfaces:
Each motor has a Heating and a Thermistor terminal.
Oil level sensor.
Antenna Locking:
Antenna can be locked at any angle by the locking screw.
Interlocks:
Electrical: Pedestal Interlock.
Mechanical: Safety Switch.

APG Physical and Functional Description

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Pedestal Operation The pedestal element is made up of two independent

Pedestal Operation

The pedestal element is made up of two independent motors

which allows a constant antenna speed (configurable), controlled by pedestal control panel (DRCG) or remotely by CMS.
Is able to operate with only one motor.
For safety purposes, the pedestal consists of mechanical and electrical interlocks:
Pedestal status signals, such as oil level or temperature, are monitored in the CMS

Pedestal Interlock: after stopping the antenna, it can be locked at any angle (fixed turntable in a maintenance procedure, for example). When locked, it is not possible to start rotation.
Safety switch is a mechanical interlock, activated manually, blocking antenna turning.

APG Physical and Functional Description

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Oil bath for turntable lubrication and for each drive train reducer.

Oil bath for turntable lubrication and for each drive train reducer.
Long-life

synthetic oil used as lubricant.
Oil heaters to correct operation: gearbox and motors.
Sensors to monitor oil level and temperature.
Status reporting to DRCG:
Over Temperature.
Oil low level.

Pedestal Lubrication System

APG Physical and Functional Description

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Oil Sealing Pedestal Lubrication System ADM Bearing APG Physical and Functional Description

Oil Sealing

Pedestal Lubrication System

ADM Bearing

APG Physical and Functional Description

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Pedestal Lubrication System Bearings of Pinions APG Physical and Functional Description Gearbox

Pedestal Lubrication System

Bearings of Pinions

APG Physical and Functional Description

Gearbox

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Pedestal Lubrication System APG Physical and Functional Description

Pedestal Lubrication System

APG Physical and Functional Description

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Pedestal Features APG Physical and Functional Description

Pedestal Features

APG Physical and Functional Description

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Pedestal – Electromechanical Clutch Features For safety reasons the engage/disengage of

Pedestal – Electromechanical Clutch Features

For safety reasons the engage/disengage of the electromechanical

clutches is limited to the switches only when both motors are stopped, DRCG is in MAINTENANCE and PTCP is ON, because engage a stopped motor when the pedestal is turning can damage the drive line.
1) Normal operation: Clutches are controlled from PLC automatically, motors will be engaged if both motors are stopped or running at the same time. If any of them is stopped while the other is running, the stopped one will be disengaged.
2) Control of clutches from PTCP switches :
DRCG: MAINTENANCE.
PTCP: ON.
The following figure shows the sequence of operation for a correct operation with these switches.

APG Physical and Functional Description

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Rotary Joint APG Physical and Functional Description

Rotary Joint

APG Physical and Functional Description

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Rotary Joint Introduction The rotary joint is an element of the

Rotary Joint Introduction

The rotary joint is an element of the APG.

RF and electrical signals such as control, status and supply passed through it.
Made up of the next elements:
7 channels: 2 for target, 2 for weather and 3 for MSSR.
18 Slip-rings: AC/DC signals transferring between the fixed and the moving part.
2 redundant encoders.
It has a cavity which accommodates a minimum of 18 slip-rings, used to transfer AC/DC signals: control, BITE or feed, towards some elements as the polarizer or the obstruction lights.
The azimuth synchronism generators, or Encoders, transforms the azimuth antenna pointing into electric signals RS-422 (generates ACPs and ARP signals)

APG Physical and Functional Description

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Rotary Joint Physical Diagram APG Physical and Functional Description

Rotary Joint Physical Diagram

APG Physical and Functional Description

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Rotary Joint Operation RF signals are transmitted through antenna Low Beam

Rotary Joint Operation

RF signals are transmitted through antenna Low Beam (waveguide,

specified to tolerate high peak power) and received through both beams.
High beam signal passes through waveguide in the antenna and rotary joint, and sent to the system through coaxial by means of a waveguide-coaxial coupler after the rotary joint.
In addition, MSSR channels can pass through rotary joint.
The slip-rings are a set of AC/DC rings where status, control and supply signals passes through, from DRCG to the antenna.
These signals are:
Polarizer status signals for both beams.
Polarizer control signals.
Obstruction light supplied signals.

APG Physical and Functional Description

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Rotary Joint Slip-Rings APG Physical and Functional Description

Rotary Joint Slip-Rings

APG Physical and Functional Description

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Rotary Joint Slip-Rings APG Physical and Functional Description

Rotary Joint Slip-Rings

APG Physical and Functional Description

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Rotary Joint Encoders The rotary joint includes two redundant angular position

Rotary Joint Encoders

The rotary joint includes two redundant angular position sensors

or encoders.
Encoder: electromechanical element that converts angular target position into a digital code.
Precision: 0.022º (14 bit).
Resolution 14 bits for 360º ?16,384.
214 ACPs plus 1 ARP each north-mark.
Jitter < 10%.
Controlling/supplied by DRCG and monitored by CMS.

APG Physical and Functional Description

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Rotary Joint Features APG Physical and Functional Description

Rotary Joint Features

APG Physical and Functional Description

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Rotary Joint Features APG Physical and Functional Description

Rotary Joint Features

APG Physical and Functional Description

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Rotary Joint Features APG Physical and Functional Description

Rotary Joint Features

APG Physical and Functional Description

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3 DRCG Physical and Functional Description Main Features Elements and Diagrams

3

DRCG Physical and Functional Description

Main Features
Elements and Diagrams
BITE
Operation
Features
Pedestal Top Control Panel

(PTCP)
Junction Box
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DRCG Elements and Diagrams Front Diagram DRCG Physical and Functional Description

DRCG Elements and Diagrams Front Diagram

DRCG Physical and Functional Description

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Performs Antenna and Pedestal Group control and monitoring. Supplies the energy

Performs Antenna and Pedestal Group control and monitoring.
Supplies the energy

required to encoders and polarizer.
It has been designed with a safety chain and different control modes: Local, Remote or Maintenance.
Protects all lines, for both data and power, established between the radar head and the equipment installed in the tower, from possible overvoltages caused by lightning.
Apart from monitoring the status of the equipment connected to the DRCG, it is reported to CMS via LAN communication.
Controls the antenna turning speed by means of controllers.

Main Features

DRCG Physical and Functional Description

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Features DRCG Physical and Functional Description

Features

DRCG Physical and Functional Description

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It is made up of the next elements, among others: Circuit

It is made up of the next elements, among others:
Circuit breakers

to control the supply of the different elements.
Electrical protection devices: AC and DC protection.
Two redundant modules to perform communication (acquisition data module): Receive and transmit the status signals (received as 24 Vdc voltage) and performs BITE management by means of ModBus/TCP protocol.
Diodes board: To avoid undesired current returns.
Two motor controllers: Transforms alternate current into direct current in order to convert it later into alternate but varying its frequency to the determined value. Controls antenna turning speed and motor status.
A PLC/programmable relay: Controls status signals managed by the DRCG.
Two EMC filters: One for each driving line, responsible for attenuating undesired harmonic frequencies.
At the front panel: Monitors pedestal status, switching motors on/off etc.

Elements and Diagrams Internal Diagrams

DRCG Physical and Functional Description

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Elements and Diagrams Internal Diagrams DRCG Physical and Functional Description

Elements and Diagrams Internal Diagrams

DRCG Physical and Functional Description

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Elements and Diagrams Internal Diagrams DRCG Physical and Functional Description

Elements and Diagrams Internal Diagrams

DRCG Physical and Functional Description

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Elements and Diagrams Internal Diagrams DRCG Physical and Functional Description

Elements and Diagrams Internal Diagrams

DRCG Physical and Functional Description

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BITE Connection DRCG Physical and Functional Description

BITE Connection

DRCG Physical and Functional Description

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BITE CMS Interface DRCG Physical and Functional Description

BITE CMS Interface

DRCG Physical and Functional Description

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BITE Alarms Example DRCG Physical and Functional Description

BITE Alarms Example

DRCG Physical and Functional Description

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BITE Safety Antenna and Pedestal Group Diagram DRCG Physical and Functional Description

BITE Safety Antenna and Pedestal Group Diagram

DRCG Physical and Functional Description

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BITE Safety Switch and Antenna Locking Mechanism ANTENNA LOCKING DRCG Physical and Functional Description

BITE Safety Switch and Antenna Locking Mechanism

ANTENNA LOCKING

DRCG Physical and Functional

Description
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Operation Pedestal Control Panel performs the following operations: Antenna turning by

Operation

Pedestal Control Panel performs the following operations:
Antenna turning by means

of motors control. It is possible to operate only with one motor.
Possibility of cutting energy off by means of emergency buttons.
Various independent control modes:
REMOTE: Control from CMS.
LOCAL: Control from DRCG frontal panel.
MAINTENANCE: Remove the key to use the PTCP.
Monitors their own devices and also controls equipment status.
Each electric line from the radar, either 400 Vac three-phase/230Vac single phase alternate current or 24/28 Vdc direct current, is protected.
The system supplies energy to some antenna devices such as encoders, heaters and obstruction lights.

DRCG Physical and Functional Description

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Operation Master-Slave Two frequency controllers: ABB ACS-800 three phases, AC, 7,5Kw.

Operation Master-Slave

Two frequency controllers: ABB ACS-800 three phases, AC, 7,5Kw.
Convert alternate

current into direct current, to change again late into alternate but with different frequency.
Both motors start using an acceleration ramp and stop by inertia in order not to damage transmission.
Master-Slave.
Used to distribute the wear of both motors and improve the operation in case of adverse weather conditions (torque control).
First controller which receive the start command is the master.
Master establishes the speed of the set and transmits to the second one the torque indication to keep same torque in both.

DRCG Physical and Functional Description

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Operation START MOTOR 1 START MOTOR 2 RESTARTED SYSTEM MOTOR 1

Operation

START MOTOR 1

START MOTOR 2

RESTARTED

SYSTEM

MOTOR 1 OFF

MOTOR 2 OFF

START UP


WARNING

MOTOR 1 ON

MOTOR 2 ON

Starting procedure of both motors:
Stopped of both motors procedure:

DRCG Physical and Functional Description

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PTCP (Pedestal Top Control Panel) is a control panel located in

PTCP (Pedestal Top Control Panel) is a control panel located in

the motor room where pedestal is installed.
Features:
PTCP – DRCG connection is complete. However, simultaneous controlling using both units is incompatible with safety ? Independently controlled.
PTCP is a reduced version of the DRCG for maintenance purposes.

Pedestal Top Control Panel (PTCP) Operation

DRCG Physical and Functional Description

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Pedestal Top Control Panel (PTCP) Frontal Panel DRCG Physical and Functional Description

Pedestal Top Control Panel (PTCP) Frontal Panel

DRCG Physical and Functional

Description
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DRCG PHYSICAL AND FUNCTIONAL DESCRIPTION Pedestal Top Control Panel (PTCP) Features DRCG Physical and Functional Description

DRCG PHYSICAL AND FUNCTIONAL DESCRIPTION Pedestal Top Control Panel (PTCP) Features


DRCG Physical and Functional Description

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Junction Box Features DRCG Physical and Functional Description Internally is composed

Junction Box Features

DRCG Physical and Functional Description

Internally is composed of interconnection terminals

and a thermostat with a temperature probe that allows the activation of the heaters when outside temperature is below 10ºC.
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4 APG Interfaces

4

APG Interfaces

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APG Interfaces APG Interfaces

APG Interfaces

APG Interfaces

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APG Interfaces APG Interfaces

APG Interfaces

APG Interfaces

- Предыдущая
Заболевания желчевыводящих путей
Следующая -
Материнский (семейный) капитал

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