Ship Based Pfe Spec

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Specification for a Ship based PFE system PFE24SB/399

Title:

Design Specification for a SB PFE system

Document Number:

80713-1

APPROVAL Issue

A

B

Date

03/04/08

04/09/08

I-1142

5466R

ECN Number Checked Engineering Approval Sales/Marketing Approval Customer Approval

Spellman High Voltage Electronics Limited - Company Confidential This document must not be copied or distributed without express permission from Spellman High Voltage Electronics Limited

CHANGE HISTORY Section All 6, 11,

Reason for Change Created from PFE24KWSPEC423

Cabinet configurations changed

Spellman High Voltage Electronics Limited - Company Confidential This document must not be copied or distributed without express permission from Spellman High Voltage Electronics Limited

Issue A B

Spellman High Voltage Electronics Limited

Page 3 of 15

Contents 1. 2. 3. 4. 5.

Introduction.......................................................................................................... 4 Scope .................................................................................................................. 4 Glossary .............................................................................................................. 4 Definition of Terms .............................................................................................. 4 Associated Documents ........................................................................................ 5 5.1. Internal Documents ...................................................................................... 5 5.2. Generic Specifications.................................................................................. 5 6. System Configuration .......................................................................................... 5 7. Power input ......................................................................................................... 6 8. HV Output Electrical Specification ....................................................................... 6 8.1. Power output ................................................................................................ 6 8.2. Voltage ......................................................................................................... 7 8.3. Current ......................................................................................................... 7 8.4. Polarity ......................................................................................................... 7 8.5. Voltage Regulation ....................................................................................... 7 8.6. Current regulation......................................................................................... 8 8.7. Ripple ........................................................................................................... 8 8.8. Temperature Co efficient .............................................................................. 8 8.9. Stability ......................................................................................................... 8 9. General specifications ......................................................................................... 9 10. Equipment Summary ....................................................................................... 9 10.1. General ..................................................................................................... 9 10.2. System Management Terminal ............................................................... 10 10.3. Test Load ................................................................................................ 11 11. Mechanical Details ......................................................................................... 12 11.1. Approximate weights .............................................................................. 12 Appendix 1 Mechanical dimensions.......................................................................... 14

Specification for the PFE24SB/399 system

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1.

2.

Page 4 of 15

Introduction This specification defines the basic specification of the PFE24SB/399 ship based PFE system. The system is designed to provide 24kWatts i.e. 12kV at 2A. The PFE will use the Spellman High Voltage Electronics SR6 Series of high voltage power supplies to derive the high voltage source and provide “redundancy” of the power converters. The control and monitoring functions of the system will normally be met by using the custom designed System Management Terminal (SMT) which incorporates an software based ‘chart recorder’ as well as the alarms, trips and ramping up and down functions. The system will also allow for monitoring on the master SR6 unit and, when necessary, controlling of the system by the master SR6 unit thus providing redundancy within the control. The complete system provides for a 26.6kWatt capability using the four SR6 power supplies with constant power performance over the range 9kV to 12kV. This allows for the system to be operated at reduced numbers of units and achieving the redundancy in the unlikely event of a failed SR6 unit. To ensure the test load is not run at over the power level of 24kWatts the test load includes a power limiting circuit. 0

1

Scope

The purpose of this specification is to define the requirements for the unit against which the product will be designed. The draft document is intended to communicate the intentions of the design team to other parts of the company and customers, for feedback and comment. The issued specification will be used to verify the design and form the basis for datasheets and marketing documentation. 3.

2

Glossary

SB PFE SMT OVP OCP CTC 4.

3

- ship based - power feed equipment - system management terminal - over-voltage protection - over current protection - cable termination cabinet

Definition of Terms

a)

Within the scope of the specification the word “shall” is used as an imperative, i.e. the following text is a mandatory requirement.

b) Within the scope of the specification the word “will” is used to indicate that the following text shows a high priority, but non-mandatory, requirement. Deviations from such requirements will be permitted only by a change of specification. c)

Within the scope of the specification the word “should” is used to indicate that the following test is advisory. Deviations from such requirements will be permitted after justification but will not require a change in specification.

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d) Within the scope of the specification the phrase “Normal Operating Conditions” is used to define conditions under which the power supply will meet full rated performance. e)

5.

4

Within the scope of the specification the phrase “Abnormal Operating Conditions” is used to define conditions under which the power supply will continue to operate, but certain performance criteria may be degraded.

Associated Documents

5.1.

10

Internal Documents

80689-1 SMT for PFE SB specification 5.2.

11

Generic Specifications

5.2.1. Safety 25

EN60950 Safety of Information Technology Equipment 5.2.2. EMC 26

EN 55011 /CISPR 11 Limits and Methods of Measurement of RFI Characteristics of Industrial , Scientific and Medical Apparatus.

6.

5

IEC 801-1

Electromagnetic compatibility; general introduction

IEC 801-2

Electrostatic discharge requirements

IEC 801-3

Radiated electromagnetic field requirements

IEC 801-4

Electrical fast transient requirements

System Configuration

The basic system configuration consists of three racks:Rack 1:

Power Feed - High Voltage Generators Clamp/Safety Chassis Master SR6 Master/Slave SR6 Master/Slave SR6 Master/Slave SR6

Rack 2:

Secondary Rack

Specification for the PFE24SB/399 system

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System Management Terminal (SMT) Patch Panel Autotransformer Rack 3:

Load rack 24kWatt Test Load

7.

Power input In order to cope with different 3 phase supply voltages, the equipment will be supplied with an Auto Transformer with selectable primary tappings of 380/415/440V. A single phase 230VAC will be derived from the autotransformer to supply the test load fans and the SMT. Monitoring of input voltage per phase and Input current per phase is supplied via suitable output connectors on the autotransformer cabinet. The power input required is 35kVA, current drawn at full load is 40Amps/phase maximum, with a 100Amp circuit breaker requirement. The total heat dissipation at full output power for the PFE and test load combined is 29kWatts.

8.

HV Output Electrical Specification 8.1.

12

Power output 24kW maximum.

The table below shows the levels of output current and voltage for the number of SR6 units. The following are some of the operating configurations (based on 24kWatts) of the system ensuring operation at 1.6Amps and 2.0Amps: Output Voltage

Output Current

Configuration

1

0 – 12kV

2.0A

1 Master, 3 Slaves

2

0 – 12kV

1.6A

1 Master, 2 Slaves

3

0 – 10kV

2.0A

1 Master, 2 Slaves

4

0 – 5kV

2.0A

1 Master, 2 Slaves

Note : These configurations can be operated via both the SMT and the master SR6. See table in section 8.3 for maximum output current.

Specification for the PFE24SB/399 system

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8.2.

8.3.

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Voltage The output voltage is linearly controllable across the range from zero to a maximum 12kV with 9.6kV at full current and 12kV at full output power. Local voltage control is possible via 10-turn potentiometers fitted on the Master SR6 and remote control via the touch screen on the SMT giving a resolution of better than 0.1%.

13

14

Current

The output current is linearly controllable across a range from zero to continuously rated maximums as shown with multiples of SR6's:

No of SR6 modules

5kV

10kV

12kV

1

0.66A

0.66A

0.55A

2

1.28A

1.28A

1.10A

3

2.00A

2.00A

1.65A

4

2.64A

2.64A

2.20A

Local current control is available via 10-turn potentiometers fitted on the Master SR6 and remote control is via the touch screen on the SMT giving a resolution of control over the complete output current range to 1mA. Note : The PFE is capable of operating in either Constant Current or Constant Voltage mode as required by the operator. 8.4.

8.5.

Polarity The complete system will be capable of being reversed in polarity by simply altering the position of a plug-in module at the rear of each SR6 and the safety/clamp chassis after powering down of the system. The system is protected until all the polarity modules are set correctly. The method to select the configurations and the polarity change will be of rugged construction and easily carried out. The selected polarity of each of the three chassis will be displayed on the Master chassis front panel and the system polarity will be shown SMT.

15

16

Voltage Regulation

Load: 0.01% of full voltage for full load change Line: +/-0.005% of full voltage +500mV over specified input range

Specification for the PFE24SB/399 system

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8.6.

17

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Current regulation

Load: 0.05% of full current for any voltage change Line: +/-0.05% of full current over specified input range 8.7.

18

Ripple

<0.25% pk-pk of maximum output, voltage or current regulated. 8.8.

19

Temperature Co efficient

< 100ppm oC-1

8.9.

20

Stability

Typically <0.02% per 8 hrs, at constant temperature after 1 hour warm up.

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General specifications

a) Digital Displays for both voltage and current is provided on the SMT and the Master SR6 derived directly from the PFE output with an accuracy of better than 0.5%. Test points are also provided on the Master SR6 front panel for both current and voltage, to enable these to be measured with an external high impedance meter and shall be scaled so that 1.20V = 12kV for voltage and 0.1V = 1A for current. b) The reversible Safety/Clamp Chassis is used in all configurations. The Safety/Clamp Chassis includes the high voltage protection diodes and the emergency output shorting relay. The output connector (15kV Lemo) and earth return connection will be mounted on the rear of the clamp chassis. c) The Master SR6 will incorporate a ramp up facility, the Ramp Rate controlled by a front panel mounted potentiometer covering the similar range to the SMT ramp rates with minimum ramp time of <6 minutes, while the maximum ramp time is >48minutes. d) There will be an Emergency Stop Button on the Master SR6 Unit and SMT. There will also be contact points available on a terminal at the rear of the main cabinet where further Emergency Stop circuits can be added. e) Indication of Voltage and Current will be shown on the Master SR6 by 3½ Digit panel meters. The voltage shown will be the true output voltage and the current will be the total current drawn by all the SR6's. f)

The Master Unit Front Panel will provide adjustable Over-voltage Protection (OVP) and Over-current Protection (OCP) with test point terminals to calibrate these settings.

g) The PFE has the capability of operating in either Single or Double End Feed mode. h) Each SR6 can be configured as either a master or slave to provide the capacity of operational redundancy.

10.

7

Equipment Summary

10.1. General 21

The PFE will be supplied in enclosed racks with shelves to hold four SR6s, and a Clamp Chassis. The SMT is to be used for normal operation of the Power Feed and can be supplied to run either in the secondary rack or run remotely up to 75m away. The Master Spare Unit will provide a back up in

Specification for the PFE24SB/399 system

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case of failure of the main PFE Master Unit and installed in the secondary rack. The equipment is supplied such that the cooling fans permit continuous running at the temperatures stated. In the event of a cooling fan failure, a facility is provided to activate an alarm output. The equipment will self protect and shutdown the PFE should the temperature rise above a predetermined level. The customer should ensure that the ambient temperature does not exceed 30°C. A Patch Panel will be supplied with 15kV rated Lemo connectors connected to the SR6's, the test load, CTC and local and system Earths. Jumper leads will allow interconnection as required for PFE to Dummy Load or to any one of the CTCs (currently only specified as 1 off) and for the Ships Anode to Ground(Ships Hull Earth). Included in the Patch Panel is the connectors for low voltage power supply (2 connectors) and the DC Patch Panel connectors(6 off). The Patch Panel to be installed in the secondary rack.

10.2. System Management Terminal 22

The SMT incorporates the features to control and monitor the PFE via a touch creen interface. Alarms will be fitted with a mute override facility and there is an emergency stop button included on the front panel. In addition to these features there are ramp Up/Down controls to allow control of the voltage at a set rate determined by the operator at rates up to 10,000V per minute. Polarity indication is also displayed The SMT can be fitted within the Power Feed Equipment Rack or run remotely and supplied with a remote control cable of up to 75metres in length. The basic facilities available on the SMT comprise the following: a) HV Switch ON/OFF. b) Voltage control from either manual or autoramp controls and Current control from manual control. c) Digital meter indication of output volts to 1 Volt definition and output current to 1 mAmp definition. A two stage alarm/trip system for both line current and line voltage giving an audible alarm from the first preset level and a PFE output adjustable trip up to 10% for the second preset level. There is indication of status of trips and alarms as well as adjustment for both line current and line voltage. d) Output Voltage polarity indication prior to HV switch on. e) An ‘electronic’ chart recorder which will record line output current and Specification for the PFE24SB/399 system

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line output voltage. i) ii)

Line output current, Line output voltage iii) Percentage voltage variation(0±20%) iv) Percentage current variation(0±10%). This recorder is capable of displaying real time measured data on the touch screen and can save data onto a USB memory stick. The data saved can imported into Excel or other spreadsheet packages to allow processing on a PC.This also allows a PC to display waveforms on its screen and print out the waveforms. f) Continuous monitoring of the Power Feed Rack Temperature. g) Deviation monitoring of the set levels of both current and voltage on edgewise meters.

10.3. Test Load 23

The test load will be an active solid state design allowing the load to be dynamically varied using manual front panel control or remotely allowing input voltages from 750V to 12,000VDC. The power is dissipated in element cards fitted into a backplane at the rear of the unit. These element cards consist of FET’s fitted to aluminium based printed circuit boards. This arrangement allows optimum transfer of power into a cooling air flow of approximately 1m3/second. The FET’s are arranged in a fault tolerant series parallel configuration where a single failure on an element card will not result in complete failure of the load. The dummy load is provided with air cooling by a fan and if the fan should fail this will result in a shut down of the dummy load to a safe condition. The maximum load current is limited to 2.5Amps with a maximum input voltage of 12kV where the input power is limited to 24kWatts by tripping of the Power Feed. Manual control of the dummy load impedance is achieved using a front panel digital potentiometer or can be remotely controlled using a 0 to 10VDC input signal. The front panel has the following controls and indicators: Power on Fan on Over temperature Emergency stop Impedance control

Indicator Indicator Indicator Switch/Indicator 10 Turn Digidial

The exhaust air temperature is a maximum of 20°C above ambient under full load conditions. The air intake has a washable filter. Specification for the PFE24SB/399 system

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PFE Operation and control modes The Control of the PFE can be by any of the following methods: l.)

Remote /Manual Control - The SMT to control up to four SR6's, with one SR6 configured to Master mode and the others as Slaves.

2)

Local/Manual Control - A front controlled Master to control itself and up to three other SR6's configured as Slaves.

11.

8

Mechanical Details

The mechanical configuration is three racks, where the maximum dimensions are: Rack 1 Rack 2 Rack 3

1760mm height x 600mm width x 800mm depth 1464mm height x 600mm width x 800mm depth 915mm height x 600mm width x 800mm depth

Refer to appendix 1 for mechanical outline. Deck mounting details are also shown in appendix 1. Various options are available to duct hot air out of the PFE cabinets however extraction of air out of the room in which the PFE is mounted is the responsibility of the customer. The cabinets are of proven all steel construction suitable for shipborne use. The cabinet colour is normally two tone grey RAL 7035 and RAL 7036 but other options are available. 11.1. Approximate weights 24

Rack 1 - Consisting of: SR6'sX3081 4 off at 40kg each = 160kg Clamp Chassis 45kg Fan 10kg Rack 85kg Rack 1 total

Specification for the PFE24SB/399 system

300kg

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Rack 2 - Consisting of: System Management Terminal Patch Panel Rack Autotransformer Rack 2 total

15kg 10kg 75kg 225kg 325kg

Rack 3 - Consisting of: 24kWatt Test Load Rack Rack 3 total

Specification for the PFE24SB/399 system

100kg 55kg 155kg

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Appendix 1 Mechanical dimensions 133

HOT AIR EXPELLED FROM TOP POWER FEED CABINET

CLAMP CHASSIS

MASTER * SMT SLAVE 176

DOOR PATCH PANEL 146

SLAVE

DUMMY

SLAVE

91

AUT TRANSFORMER

60

60

60 80

* Can be positioned remotely and a blank panel in place.

Spellman High Voltage Electronics Limited - Company Confidential This document must not be copied or distributed without express permission from Spellman High Voltage Electronics Limited

Spellman High Voltage Electronics Limited

Page 15 of 15

600 REF 115

370

600 REF 115

370

600 REF 115 370

115

115

570

115

115

150 MIN

POSITION OF FIXING POINTS

TOLERANCE ON ALL DIMENSIONS ±3mm Specification for the PFE24SB/399 system

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