mecㆍviewer v1.4 :: RFP_WAS5000 Replacement and Maintenance Components.pdf

KARI PROPRIETARY

Request for Proposal

for

High Frequency Acoustic Source

WAS 5000 Amplifier Replacement &

Maintenance Components

for Satellite Test Acoustic Chamber

2019 년 5 월

한국항공우주연구원

우주환경시험부

305-333 대전광역시 유성구 어은동 45번지

전화 : (042)860-2562 / 팩스 : (042)860-2234

KARI PROPRIETARY

KARI.KOREA 2019. 5.

Space Environment Test Division

1. Overview of the project

1.1

Korea Aerospace Research Institute (hereinafter referred to as “KARI”)

is located at Daeduk Research Complex, 140 km south of Seoul.

1.2

KARI has a satellite assembly, integration and test center (hereinafter

referred to as “AITC”) as a research institutes for the purpose of the

effective development of domestic & scientific satellites.

1.3

In the AITC, for the acoustic test, the high intensity acoustic chamber

is operated and can generate the noise of 150dB OVSAL.

1.4

This acoustic chamber uses the low frequency source(WAS-3000) and

high frequency source (WAS-5000) to generate the acoustic noise.

1.5

The purpose of this project is to change the amplifier system of high

frequency source of WAS-5000.

1.6

The supplier should show that the amplifier & cooling system are well

operated with WAS-5000 modulator.

1.7

The supplier should submit the bisiness showing of sales and

installation records for high frequency acoustic source amplifier

system of WAS 5000 or EPT 200.

1.8

The main undertakings of the project are to perform guarantee

quality and training, installation and factory & site acceptance test etc.

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Space Environment Test Division

2. Procedure of the project

The project shall be proceeded with five parts as follows:

1) Supply for amplifier system including cooling unit

2) Supply for maintenance component on WAS 5000 System

3) Factory acceptance test

4) Installation of amplifier system at KARI

5) KARI site acceptance test with acoustic modulator (WAS-5000)

3. Requisites of participants

3.1

The supply should submit the bisiness showing of sales and

installation records for high frequency acoustic source amplifier system for

WAS 5000 or EPT 200.

KARI.KOREA 2019. 5.

Space Environment Test Division

4. Technical Requirements

For the acoustic facility, main components are :

- Reverberant chamber,

- GN2 supply & control system

- Acoustic horns & modulators

- Acoustic control system

- Monitoring & Safety system

Figure 1 shows a block diagram of a acoustic facility

Figure 1 Block diagram of a acoustic facility

KARI acoustic chamber employ the two horns which have cutoff frequencies

of 25Hz and 125Hz are employed for acoustic impedance matching. Two

KARI.KOREA 2019. 5.

Space Environment Test Division

type of modulators are used to generate the sound. One is the WAS-3000

which is used at 25Hz horns. The other is WAS-5000 which is used at 125

Hz.

Figure 2 shows the vibro-acoustic source of high frequency band(WAS-5000)

which is installed at KARI.

Figure 2 WAS-5000(High frequency vibro-acoustic modulator)

The purpose of this project is to change the old amplifier system including

cooling unit and remote control panel for high frequency source (WAS-

5000).

KARI.KOREA 2019. 5.

Space Environment Test Division

Figure 3 Amplifier system for WAS-5000

4.1 Supplier shall supply the amplifier system which is compatible for

existing KARI WAS-5000 modulator. Amplifier system shall be composed of

Amplifier, Remote control & Status monitoring assembly and Cooling unit

including field supply.

4.2 Supplier shall supply the maintenance components for existing amplifier

and WAS 5000 modulator, which are specified at 4.12 & 4.13.

4.3 Supplied amplifier & cooling unit system shall be operated with KARI

WAS-5000 modulator

4.4 Supplier shall supply related engineering for installation and operation

with WAS-5000 modulator.

KARI.KOREA 2019. 5.

Space Environment Test Division

4.5 In case of the need for disassembly on WAS 5000 modulator for

maintenance during amplifier site installation, the supplier shall supply the

related engineering service.

4.6 Supplier shall supply the documentation such as operating/installation/

maintenance manuals, schematics, part lists and as-built drawings

4.7 The supplier shall meet the acosutic spectrum with KARI WAS-5000

modulator & KARI acoustic chamber system, which is specified in Table 1.

Test tolerance is +/-2dB during KARI site acceptance test.

4.8 Amplifier specification

 Drive output for one or two WAS-5000 modulator.

 Volt amps : 12 kVA

 Current max : 100 Amps rms

 100% air-cooled, 480V/240, 3Ø Input

 Drive and Over-Current protection for WAS-5000 modulator

 Efficient "Class-D" Direct-Coupled design, 100% air-cooled

 Frequency range: 5 Hz to 3 kHz

 Digital Display of Driver Coil Voltage and Current Frequency

Range: 5 Hz to 3000 Hz

 Includes P/N 501065 Current Sense Kit for Field Supply, Fixed

250A Trip Point, N.O./N.O. Dry-Contact Output

4.9 Specifiaction of Remote control/Status Monitoring Assembly

 Remote Control of Amplifier Functions.

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Space Environment Test Division

 LED Interlock Status Display:

 Aux Connector Status Signals

 PA Fuse

 Power ON

 Modulator Water Flow (red-green)

 Modulator Water Pressure (red-green)

 Modulator Water Temp. (red-green)

 Input Resistance: 10k ohm

 Real-time Digital Display of Amplifier Output Voltage and Current

 60ft Cabling Included, with round, multiconductor screw-on

MS plug connectors at each end.

4.10 Cooling Unit specification

 Cooling and Field Supply for one WAS-5000 transducers

 Water-cooled, 480v/415, 3Ø Input, 50/60 Hz

 Current max : 100 Amps rms

 Digital indication of Flow and Pressure

 Digital Indication of Field Voltage and Current

4.11 Specification of Modulator [KARI WAS-5000]

 Acoustic power output : 10 kW

 Air flow rate for 10kW : 1,500 scfm

 Air pressure required at exhaust plenum housing : 30 psi

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 Frequency response : 20 to 5000Hz (Maximum modulation up to

1250Hz)

 Drive circuit maximum current : 60 amp rms(sine), 40 amps rms

(random)

Table 1. Required Acoustic Spectrum with KARI WAS-5000 modulator

4.12 Spare compnents for cooling unit for WAS 5000 amplifier

 SWITCH, FLOW, WATER, 1/2" PIPE, .25 GPM, BRASS (2ea)

 Flow Sensor, 1/8 Pipe, Water, 0.5-5.0SLM (0.132 1.32 GPM). (3ea)

 FILTER HOUSING, REINFORCED PLASTICACCEPTS 10" NOMINAL

LENGTH FILTER, OVERALL DIM 5 1/8" X12 1/16", RATED AT 125

PSI MAX AT NORMAL TEMP,3/4 NPTIINLET & OUTLET, WITH

MOUNTING BRACKET (1ea)

 FILTER, VISCOSE FIBER WOUND ON APOLYPROPYLENE MESH CORE,

MICRON RATING 50-100, NOMINAL LENGTH 10" (10ea)

 VALVE, FLOAT, INLET, 1/8" NPT FEMALE (1ea)

 TRANSFORMER, STEPDOWN, 3KVA, SINGLEPHASE, 50/60 HZ, 240V

(parallel)/(480/415V/380V

(series)

PRIM,/120V

(parallel)/240V

(series) SEC. (1ea)

 Motor-50 Carbonator Pump Motor, Split Phase Open Dripproof, HP

1/3, RPM 1425, Voltage 115 V, NEMA Frame 48Y, Service Factor

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Space Environment Test Division

1.15, Frequency, 50 Hz, Mounting Cradle, Bearings Sleeve, Thermal

Protection Automatic, Full Load Amps 5.6. (1ea)

4.13 Spare compnent for existing WAS-5000 modulaor

 Spray ring assembly for WAS-5000 modulator (1ea)