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Section 3. Load Connection and Sensing

 

Remote Sensing 

 

Remote Sensing

 

 

 

WARNING

 

There is a potential shock hazard at the sense points when using a power supply 
with a rated output greater than 40 V. Ensure that connections at the load end are 
shielded to prevent contact with hazardous voltages. 

 

 

 

 

 

CAUTION

 

Operation of the supply in remote sense mode without the assured connection of 
the load wires and remote sense wires to the load may damage the power 
supply. 

 

 

 

 

 

CAUTION

 

Ground the sense line shield in one place only. Locations include the power 
supply’s return output connection at the load, the power supply’s return output at 
the negative output terminal, or the power supply’s ground binding post on the 
front panel. 

 

 

Remote sensing permits you to relocate the regulation point of the power supply 
from the output terminals to the load or other distribution point terminals. 

The power supply provides sense connections beside the output terminals at the front 
and rear panels. Use 22-24 AWG twisted, shielded pair wiring to make sense 
connections. 

With the remote sense leads in place, the supply regulates for the displayed voltage 
at the point where the sense lines are connected to the output leads (provided the sum 
of these lead losses does not exceed 0.5 V). With the sense lines disconnected, the 
supply regulates the voltage at the output terminals. Remote sensing is not required 
for constant current mode of operation, where the supply is regulating the output 
current. 

 

 

Note

 

Do not operate the supply with sense lines connected to the load without also connecting 
the normal load power leads to the output terminals. 
Always use shielded pair wiring for sense lines to minimize noise effects. (See 

“Grounding” on page 17

.) 

 

 

 

 

CAUTION

 

Do not reverse positive (+) and negative (

) lead connections. 

 

 

 
 

 

19 

Содержание sorensen hpd series

Страница 1: ...HPD Series Programmable DC Power Supply OperationManual TM 30OP 01XN Rev E www programmablepower com...

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Страница 5: ...cation purposes only Notice of Copyright HPD Series Programmable DC Power Supply Operation Manual 2007 AMETEK Programmable Power Inc All rights reserved Exclusion for Documentation UNLESS SPECIFICALLY...

Страница 6: ...This page intentionally left blank ii...

Страница 7: ...and equipment safety Always ensure that facility AC input power is de energized prior to connecting or disconnecting any cable In normal operation the operator does not have access to hazardous volta...

Страница 8: ...This page intentionally left blank iv...

Страница 9: ...o the instructions of AMETEK is opened modified or disassembled in any way without AMETEK s consent or is used in combination with items articles or materials not authorized by AMETEK The Buyer may no...

Страница 10: ...This page intentionally left blank vi...

Страница 11: ...ical Specifications 7 Chassis Dimensions and Weight 8 Introduction 9 Basic Setup Procedure 9 Initial Inspection 9 Periodic Cleaning 9 Rack Mounting 10 Location and Ventilation 10 AC Input Power Connec...

Страница 12: ...22 Automatic Mode Crossover 23 Constant Power Loads 23 Using Multiple Supplies 24 Connecting Multiple Supplies in Series Voltage Mode Only 24 Connecting Multiple Supplies in Parallel 25 Split Supply...

Страница 13: ...power density providing increased power output in a small light package The power supply delivers simultaneous digital displays for both voltage and current andbargraphdisplaysformonitoringtransientch...

Страница 14: ...interface for serial instrument programming using RS 232 protocol Internal GPIB interface for complete remote digital programming IEEE 488 standard Optional 200 250 Vacinput Option AC200 Standard is...

Страница 15: ...ng Interface Indicators Rear Panel Connectors and Outputs Figure 1 3 shows the connectors and outputs available at the rear panel Figure 1 3 shows the 15 V or 30 V low voltage model Figure 1 3 Rear Pa...

Страница 16: ...of Imax C 0 15 V 0 20 A 300 W 3 5 mV 4 mA 3 5 mV 4 mA 250 mV 300 mA 100 mV 5 mV 20 mA 3 mV 6 mA 3 mV 16 mA 2 25 mV 4 mA 0 30 V 0 10 A 300 W 5 mV 3 mA 5 mV 3 mA 400 mV 200 mA 100 mV 5 mV 10 mA 6 mV 3 m...

Страница 17: ...y from power on until output stable 500 s 1 5 s maximum Input Conditions Rated AC Input Voltage 120 Vac standard 230 240 Vac AC200 option Maximum AC Input Power 625 VA Operational AC Input Voltage Ran...

Страница 18: ...n Line drop must be deducted from the supply s maximum output voltage Input to output 1350 Vac 1 5 V line EnvironmentalSpecifications Operating Ambient Temperature 0 to 30 C with default local sensing...

Страница 19: ...appropriate power cord for destination country Front Panel Output Connector Three binding posts positive negative and ground Rear Panel Output and Sense Connector Four terminal barrier strips The 60 V...

Страница 20: ...res and Specifications Chassis Dimensions and Weight Chassis Dimensions and Weight Height 5 25 in 132 mm Width 4 25 in 109 mm Depth 11 7 in 297 mm Weight 7 7 lb 3 5 kg 8 Operating Manual for HPD Serie...

Страница 21: ...ower supply was shipped with an IEC power cord set appropriate to the destination country two 2 position terminal block jumpers and an operating manual When you first receive your unit perform a quick...

Страница 22: ...r about the rack mount kit Option RM For Rack Mount Installation Instructions see Appendix A Location and Ventilation Whether you place the power supply in a rack or on a bench allow cooling air to re...

Страница 23: ...urned on the output voltage or current previously set is applied to loads The AC input connector is a standard IEC 320 male connector located on the power supply s rear panel Table 2 2 Operational AC...

Страница 24: ...Set the power switch to ON 3 Rotate the current control one half turn clockwise Slowly rotate the voltage control clockwise and observe the digital meter Minimum control range should be from zero to m...

Страница 25: ...nd being applied CAUTION When making load connections be sure to observe correct polarity or the power supply may be damaged You can obtain reliable performance from your power supply if you take cert...

Страница 26: ...nimum load wiring must have a current capacity greater than the output current rating of the power supply This ensures that the wiring will not be damaged even if the load is shorted See Table 3 1 for...

Страница 27: ...5 V drop in each line1 Figure 3 1 Maximum Wire Length for 100 mV Line Drop Noise and Impedance Effects To minimize noise pickup or radiation use shielded pair wiring of the shortest possible length fo...

Страница 28: ...ropriate terminal screw Tighten the screw High Voltage Models To make load connections to high voltage models attach an appropriate gauge wire1 maximum 12 wire following the steps below 1 Strip load w...

Страница 29: ...tput terminals Without sense line connections the supply regulates the voltage at the output terminals of the power supply For improved local sensing connect jumpers between the sense terminals and th...

Страница 30: ...e shipped unattached with 60 V models If your application requires precisely regulated output voltage at the rear output terminals install the jumpers by inserting the jumper wires into the jumper ter...

Страница 31: ...supply from the output terminals to the load or other distribution point terminals Thepowersupply provides sense connections beside the output terminals at the front and rear panels Use 22 24 AWG twis...

Страница 32: ...Section 3 Load Connection and Sensing Remote Sensing 20 Operating Manual for HPD Series Power Supply...

Страница 33: ...iven time depends on the combination of Output voltage setting VSET Output current limit setting ISET Resistance or impedance of the attached load RL Figure 4 1 represents the relationships between th...

Страница 34: ...current limit setting ISET VSET ISET RL In CI mode the power supply maintains the output current at the selected value ISET while the output voltage varies with the load requirements Setting the Curre...

Страница 35: ...rease above the setting of the current adjust control the unit switches automatically from CV to CI mode If you lower the load requirements the supply automatically returns to CV mode Constant Power L...

Страница 36: ...of one supply to the positive terminal of the next supply The total voltage available is the sum of the maximum voltages of each supply add voltmeter readings The maximum current available to the loa...

Страница 37: ...with the diodes as shown Damage to the sense circuits may occur As described below you can connect power supplies in parallel to obtain a single output supply with a higher output current limit Set al...

Страница 38: ...e output terminal of one supply to the positive terminal of the second supply as shown in Figure 4 5 The positive output terminal of the first supply now provides a positive voltage relative to the co...

Страница 39: ...ture which will allow one knob control of both supplies in a split supply configuration 27 Postive Sense Positive Output Terminal Negative Output Terminal Return Sense Load Lines Use the largest gauge...

Страница 40: ...APPENDIX RACK MOUNT INSTALLATION INSTRUCTIONS 28...

Страница 41: ...40 29 4X 9 ITEMS 10 AND 13 NOT USED FOR HPD...

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