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Powerten 3300 Series, Operation Manual

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M520086-01 

4-1 

Chapter 4 

MAINTENANCE AND CALIBRATION 

 

4.1    INTRODUCTION 

 
This chapter contains preventive maintenance information and calibration procedures for the 
3300 Series.  
 

WARNING 

 

All maintenance that requires removal of the cover 
of the unit should only be done by properly trained 
and qualified personnel.  Hazardous voltages exist 
inside the unit. 

 

4.2 PREVENTIVE 

MAINTENANCE 

 
Preventive maintenance for the 3300 Series consists of scheduled inspection and cleaning.  
 

a. 

Schedule.  Table 4-1 lists the preventive maintenance routines and the 
recommended performance intervals. 

b. 

Inspection.  Table 4-2 lists the visual inspection checks to be performed.  It also 
indicates the corrective action to be taken.  

c. 

Cleaning.  Cleaning requirements are based on the need established during 
inspection.  If cleaning is required, follow the instruction listed in the corrective 
action column of Table 4-2. 

 
 
 

Table 4-1 

Preventive Maintenance Schedule 

 

PREVENTIVE MAINTENANCE 

ROUTINE

 

 

RECOMMENDED PERFORMANCE 

INTERVAL

 

 

Inspection 

 

Cleaning 

 

Annual 

 

As Required 

 

 

Summary of Contents for 3300 Series

Page 1: ... contains information proprietary to PowerTen The information contained herein is not to be duplicated or transferred in any manner without prior written permission from PowerTen PowerTen 9250 Brown Deer Road San Diego CA 92121 2294 1 800 978 6680 Tel 858 458 0253 Fax 858 458 0237 Email sales powerten com www powerten com ...

Page 2: ...input power is de energized prior to connecting or disconnecting the input output power cables Warning Lethal voltages may be present inside the power supply even when the AC input voltage is disconnected Only properly trained and qualified personnel should remove covers and access the inside of the power supply During normal operation the operator does not have access to hazardous voltages within...

Page 3: ... CIRCUITS EVEN WHEN THE POWER IS OFF CAPACITORS CAN RETAIN AN ELECTRICAL CHARGE USE SAFETY GLASSES DURING OPEN COVER CHECKS TO AVOID PERSONAL INJURY BY ANY SUDDEN FAILURE OF A COMPONENT WARNING SOME CIRCUITS ARE LIVE EVEN WITH THE FRONT PANEL SWITCH TURNED OFF SERVICE FUSE VERIFICATION AND CONNECTION OF WIRING TO THE CHASSIS MUST BE ACCOMPLISHED AT LEAST FIVE MINUTES AFTER POWER HAS BEEN REMOVED V...

Page 4: ...ference 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 corr...

Page 5: ...al This manual has been written expressly for the Power Ten 3300 Series of power supplies SAFETY SYMBOLS CAUTION Protective Conductor Terminal Risk of Electrical Shock CAUTION Alternating Current AC Refer to Accompanying Documents ...

Page 6: ..._________________________ 3 7 3 1 3 Remote Voltage Programming _____________________________________________________ 3 7 3 1 4 Remote Sensing ________________________________________________________________ 3 8 3 1 5 Remote Output On Off Control_____________________________________________________ 3 8 3 1 6 Auto Parallel Operation __________________________________________________________ 3 9 3 1 ...

Page 7: ...300 SERIES CONTROLS AND INDICATORS 3 4 FIGURE 3 2 NORMAL CONNECTION PATTERN 3 11 FIGURE 3 3 REMOTE RESISTANCE PROGRAMMING OF OUTPUT CURRENT 3 11 FIGURE 3 4 REMOTE VOLTAGE PROGRAMMING OF OUTPUT CURRENT 3 12 FIGURE 3 5 REMOTE RESISTANCE PROGRAMMING OF OUTPUT VOLTAGE 3 12 FIGURE 3 6 REMOTE VOLTAGE PROGRAMMING OF OUTPUT VOLTAGE 3 13 FIGURE 3 7 REMOTE SENSING OPERATION 3 13 FIGURE 3 8 REMOTE ON OFF CON...

Page 8: ...quiring variable DC sources with good regulation and low output ripple characteristics Models of the 3300 Series are constant current constant voltage supplies with an automatic crossover feature They provide up to 1000 watts of DC power over a wide range of voltage and current levels 1 2 TECHNICAL CHARACTERISTICS The physical electrical and environmental characteristics for the 3300 Series are li...

Page 9: ...ility Remote Control Monitor Power Density Power Factor Total Harmonic 19 00 in 18 50 in 1 75 in 15 lb max 95 to 127 VAC 190 to 253 VAC Option 47 to 63 Hz Single 2 wire plus gnd 0 1 of max output voltage 0 1 of max output current 30 mV max A 30 step load will recover to within 2 of original value within 10 ms 0 05 of set point per 8 hr after warm up and at a fixed line load and temperature On Off ...

Page 10: ...100 Constant Current 0 100 Remote Sensing ENVIRONMENTAL CHARACTERISTICS Temperature Coefficient Ambient Temperature Operating Storage Cooling 0 5k ohms 0 5k ohms 0 5 VDC 0 100 mV 0 1 mA 0 1 mA Terminals are provided to sense output voltage at point of load Maximum line drop 3 of rated voltage per line 0 02 C of max output voltage rating for voltage set point 0 03 C of max output current rating for...

Page 11: ... 1060 10100 2030 2050 3020 3033 4015 4025 5020 6010 6016 8006 8012 10010 1208 1507 0 7 5 0 7 5 0 10 0 10 0 20 0 30 0 30 0 30 0 40 0 40 0 50 0 60 0 60 0 80 0 80 0 100 0 120 0 150 75 125 60 100 30 50 20 33 15 25 20 10 16 6 12 10 8 7 30 mV 30 mV 30 mV 30 mV 30 mV 30 mV 30 mV 30 mV 30 mV 30 mV 30 mV 30 mV 30 mV 50 mV 50 mV 50 mV 50 mV 50 mV ...

Page 12: ...idate future claims 2 2 INPUT OUTPUT CONNECTORS Table 2 1 lists all external connections for the 3300 Series models For permanently connected equipment a readily accessible disconnect device shall be incorporated in the fixed wiring For pluggable equipment the socket outlet shall be installed near the equipment and shall be easily accessible 2 3 LOCATION AND MOUNTING The 3300 Series models are int...

Page 13: ...NECTION DESCRIPTION 3300 3300I Terminal Block with 6 32 screws Table 2 3 3300 Series Input Output Connectors CONNECTOR FUNCTION CONNECTS TO TB2 AC TB2 AC CHASSIS GND Pos Bus Bar Neg Bus Bar GND Stud TB1 Prime Power Input Std Prime Power Input Std Output Power Output Power Control Interface 95 to 127 VAC 47 to 63 Hz Power Source User load s User Load s See Table 3 2 for a description 190 to 253 VAC...

Page 14: ...able is for copper wire only Table 2 4 Minimum Wire SizeTable 2 5 OUTLINE DRAWINGS The following page figure 2 1 shows the outlines and overall dimensions for 3300 product line SIZE 60 C 75 C 85 C 90 C TYPES TYPES TYPES TYPES AWG MCM RUW T TW UF FEPW RH RHW RUH THW THWN XHHW USE ZW V MI TA TBS SA AVB SIS FEP FEPB RHH THHN XHHW 14 20 20 25 25 12 25 25 30 30 10 30 35 40 40 8 40 50 55 55 6 55 65 70 7...

Page 15: ...M520086 01 2 3 Figure 2 1 Outline Drawing 3300 Series 19 00 1 75 0 125 18 15 16 75 1 00 POS NEG TB1 TB2 Ø0 25 2 PL ...

Page 16: ... Units are shipped from the factory configured for local voltage current control and local voltage sensing This configuration is used for applications where the IR drop of the load wires is insufficient to degrade performance at the load Prior to turning the unit on rotate the voltage and current potentiometers fully counterclockwise minimum output Then switch the power to the ON position and adju...

Page 17: ...put Current Control Local Output Voltage Control Provides fault protection Applies AC power to the power supply Measures voltage output Indicates the power supply is operating in the voltage mode Indicates the power supply is operating in the current mode Measures current output Indicates output voltage has exceeded preset level and power supply output is turned off Adjusts overvoltage trip level ...

Page 18: ...al control Negative voltage sensing terminal Negative output voltage for local voltage sensing 1 milliamp current source for either local or remote current programming using resistance Current control input terminal Front panel current control potentiometers for local control Negative current monitor terminal Return for remote current programming resistor 0 5 VDC 0 100 rated current Use positive c...

Page 19: ... for connection requirements b External Current Programming Using a Voltage Source The voltage coefficient for remote current programming is 1 millivolt per percent of rated output current or 100 millivolts 100 of rated output On models with 10 V programming the programming coefficient is 0 1 volt per percent of rated output or 10 volts 100 See Figure 3 4 for connection requirements 3 1 3 Remote V...

Page 20: ...ernal power supply damage may occur Output current then flows through sensing terminals a Remove jumper between the positive sense terminal TB1 2 and the positive output monitor terminal TB1 1 b Remove jumper between the negative sense terminal TB1 6 and the negative output monitor terminal TB1 7 c Connect sensing leads from the load positive to TB1 2 and the load negative to TB1 6 A shielded twis...

Page 21: ...9 Rotate slave voltage control potentiometers to maximum and adjust current control potentiometers for balanced output currents during operation Once adjusted output currents will track automatically If tracking is not close perform the calibration procedures listed in Chapter 4 See Figure 3 10 for connection requirements 3 1 7 Auto Series Operation In the auto series mode of operation a master sl...

Page 22: ...ntrolling overvoltage may be adjusted through an access hole in the front panel NOTE All overvoltage circuitry has been properly adjusted to their respective unit before leaving the factory For trip levels less than the maximum output voltage or to check the overvoltage circuitry perform the following procedure a Set the potentiometer fully clockwise b Adjust the power supply output voltage to the...

Page 23: ...M520086 01 3 11 Figure 3 2 Normal Connection pattern Figure 3 3 Remote Resistance Programming of Output Current ...

Page 24: ...M520086 01 3 12 Figure 3 4 Remote Voltage Programming of Output Current Figure 3 5 Remote Resistance Programming of Output Voltage ...

Page 25: ...M520086 01 3 13 Figure 3 6 Remote Voltage Programming of Output Voltage Figure 3 7 Remote Sensing Operation ...

Page 26: ...M520086 01 3 14 Figure 3 8 Remote On Off Control by Contact Closure Figure 3 9 Remote On Off Operation Using AC DC Voltage Source ...

Page 27: ...M520086 01 3 15 Figure 3 10 Auto Parallel Operation ...

Page 28: ...M520086 01 3 16 Figure 3 11 Auto Series Operation ...

Page 29: ...M520086 01 3 17 Figure 3 12 Auto Tracking Operation ...

Page 30: ... Series consists of scheduled inspection and cleaning a Schedule Table 4 1 lists the preventive maintenance routines and the recommended performance intervals b Inspection Table 4 2 lists the visual inspection checks to be performed It also indicates the corrective action to be taken c Cleaning Cleaning requirements are based on the need established during inspection If cleaning is required follow...

Page 31: ...ned or pinched wire frayed worn or missing insulation Corrosion loose cracked or dirty connections Short circuits arcing corrosion overheating Dirt and corrosion Clean contacts with solvent moistened cloth soft bristle brush small vacuum or low compressed air Replace connectors damaged deeply corroded or improperly seated in mating connector Clean with cloth moistened with soapy water Repair or re...

Page 32: ...pable of full rated voltage and current Connect a precision current shunt in series with either the positive or negative output between the power supply and the resistive load Two digital multimeters are required to perform the calibration procedures 4 3 1 Converter Assembly Calibration Voltage Reference The voltage reference is provided by an adjustable current regulator Q15 To calibrate for the ...

Page 33: ...s zero millivolts Voltage Full Scale Calibration Full scale voltage calibration is accomplished by adjusting R101 The following sequence is recommended a Connect a resistive load across output terminals b Connect a DMM between TB1 2 and TB1 6 Set DMM to DC volts and the scale to read maximum rated power supply voltage c Connect a second DMM between TB1 4 and TB1 6 Set DMM to DC volts and scale to ...

Page 34: ... front panel voltage control potentiometer fully clockwise e Apply power to power supply f Adjust front panel current control for 100 millivolt reading on DMM across TB1 9 and TB1 11 g Adjust R88 until rated output current flows through external current shunt Current Monitor Parallel Tracking Amplifier Zero Calibration The Current monitor parallel tracking amplifier zero is accomplished by adjusti...

Page 35: ...ent through external current shunt g Adjust R77 for 5 00 volts DC reading on DMM connected between TB1 12 and TB1 13 h Remove power from power supply i Reconfigure power supply for normal operation 4 3 2 Display Assembly Meter Zero Calibration The zero set for both voltage and current front panel meter is automatic Meter Full Scale Calibration The full scale adjustment for the digital panel meters...

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