Precision Trading 60 R3.0 Finding a Shorted Discharge Transistor, Equipment Required, Procedure

Page 55

Operator Manual, Supercharger 60

R3.0

10.2FINDING A SHORTED DISCHARGE TRANSISTOR

Since all discharge transistors are wired in parallel, a single shorted transistor will short the entire bank.

The procedure that follows will allow the finding of the shorted transistor without requiring removal and testing of each device individually.

10.2.1.EQUIPMENT REQUIRED

•Digital Voltmeter.

•Battery, 24V.

•Lamp, 24V (lamp must draw at least 0.5 A).

10.2.2.PROCEDURE

10.2.2.1. TURN UNIT OFF, DISCONNECT IT FROM THE WALL OUTLET. 10.2.2.2. Connect the lamp in place of the discharge current limiter (see fig 8). 10.2.2.3. Connect the charger to the battery.

10.2.2.4. If the lamp illuminates, it indicates that there is a short in the discharge circuit, generated by one or more shorted transistors.

10.2.2.5. Measure the voltage across the individual .22 OHM emitter resistors (RED-RED-GOLD-GOLD) (see fig 8).

•A non zero reading, approximately 0.1V for a lamp drawing .5A, indicates current flow due to a transistor with a collector to emitter short.

•NOTE: A non zero reading on all emitter resistors (0.02V approx for a lamp drawing 0.5A) indicates a different failure mode (collector to base short; refer to step 7).

10.2.2.6.Remove any shorted transistors and repeat steps 4 and 5 until a no short reading is obtained. Replace defective devices only with transistor type MJ15023.

10.2.2.7.If all transistors appear to be shorted (ALL emitter resistors reading a voltage), then, one or more have failed with a collector to base short, causing the remainder of the transistors to turn on. It will then be necessary to check each transistor individually.

•This can be greatly facilitated by searching for a zero reading. This will indicate the shorted device.

10.2.2.8.When replacing transistors, make sure that the base and emitter pins engage properly in the socket contacts. Add heat sink compound and torque the screws properly to insure a good thermal transfer.

•NOTE: If replacing any of the control transistors (Q1 and Q2), note that they are mounted with a mica insulator.

Page 55 of 62

Page 54 Page 56
Image 55
Page 54 Page 56
Contents Specifications Installation Calibration Table of Figures Introduction and System Description Operator Manual, Supercharger R3.0 Block Diagram Condensed Operating Instructions Constant Current Charge normal modeConstant Voltage Peak Voltage Charge Discharge Charge SpecificationsMaximum Current 50 Amps Minimum Increment 0.1 AMP Reverse Polarity Protection Overtemp ProtectionOVER/UNDER Current Protection Overvoltage ProtectionMaximum Current DischargeMinimum Increment Terminal Voltage TimerOverheat Protection Time Limits Power Failure ProtectionLine Input Voltage Accuracy and StabilityVoltmeter Digital Panel MetersControls and Displays SW5 Digital Voltmeter Input Selector 10 SW6 Voltage Mode Selector11 SW7 Timer Speed Selector SW4 Cell SelectorFront Panel 15 DS2B Main 12 DS1A Reset13 DS1B CYC END 14 DS2A DualAudible Alarm Constant Current Charge Modes of OperationSingle Rate Constant Voltage Charge Peak Charge Deep Cycle Full Discharge Analysis Auto CUT-OFFGeneral Operating InstructionsConstant Current Charge Peak Voltage Charge Discharge Cell Float Peak Selector Voltage Float/Peak Voltage ChartOperating Notes and Precautions Bench Space InstallationLine Voltage Line Voltage Wiring, 208/230V Verification of Performance Required Test Equipment and AccessoriesVisual Verification Timer Verification Voltage Fault Test Battery Overtemp CUT-OFFOvervoltage CUT-OFF Reverse Polarity TestDischarge Voltage CUT-OFF Current Tracking Full DischargeVoltage Control Peak Voltage Float VoltageMeters Calibration Circuit Board Adjustments and CalibrationDigital Meters see Figure Voltmeter Meters Board Adjustments 3.2. R11 Discharge Cell Calibrate Control Switch Board Adjustments3.5.3. R25 High Current Calibrate 3.5.2. R28 LOW Current CalibrateCurrent Control Board Adjustments Control Board as ground reference for voltage measurements Operator Manual, Supercharger R3.0 Voltage Control Board Adjustments Operator Manual, Supercharger R3.0 Circuit Board Sequence Burned Resistors in the Discharge Heatsinks Troubleshooting and RepairsTroubleshooting Reset Indicator and Timer Display do not Turn onCurrent Tracking is OFF by a Small Constant Amount Fault Lights on and no Audible ALARM. Unit Runs NormallyCurrent Fault in CV Voltage Fault in CV or PeakFinding a Shorted Discharge Transistor ProcedureEquipment Required Measuring for a shorted transistor Location of Current Limiters Power Block Diagram Other Replaceable Modules and PartsCircuit Boards PartsBattery Testing Notes Disclaimer Revision Date Revision Index

60 R3.0 specifications

Precision Trading 60 R3.0 represents a significant advancement in the field of automated trading platforms, designed to cater to both novice and professional traders alike. This innovative software harnesses cutting-edge technologies to ensure that users can maximize their trading efficiency and profitability.

One of the core features of Precision Trading 60 R3.0 is its advanced algorithmic trading capabilities. The platform employs state-of-the-art algorithms that analyze vast amounts of market data in real-time. This allows traders to identify potential trading opportunities and execute trades with precision. The system employs machine learning techniques, continuously improving its performance based on historical data and current market trends.

The platform's user-friendly interface is another standout characteristic. Precision Trading 60 R3.0 was designed with traders in mind, featuring an intuitive layout that simplifies navigation. This means that even individuals with limited experience in trading can easily set up their accounts, configure trading strategies, and monitor their investments.

Moreover, Precision Trading 60 R3.0 offers customizable trading strategies, giving users the flexibility to tailor their approach to suit their individual risk tolerance and trading goals. Whether one prefers scalping, day trading, or longer-term positions, the software supports a wide range of trading styles.

Integration with various trading instruments is also a key attribute of Precision Trading 60 R3.0. The platform allows users to trade in multiple markets, including forex, stocks, commodities, and cryptocurrencies. This multi-asset capability ensures that traders have a varied selection of options, thereby maximizing their profit potential.

Additionally, the platform is equipped with robust risk management tools. Users can set limits on their trades, utilize stop-loss orders, and implement other protective measures that help minimize potential losses. This focus on risk management is crucial for maintaining long-term trading success.

Security is another priority for Precision Trading 60 R3.0. The platform utilizes advanced encryption protocols to safeguard user data and transactions, providing peace of mind for traders.

In conclusion, Precision Trading 60 R3.0 stands out due to its sophisticated algorithmic trading, user-friendly interface, customizable strategies, multi-asset integration, comprehensive risk management tools, and strong security features. This platform is poised to transform the trading landscape, making it an attractive option for anyone looking to enhance their trading performance.
Top Page Image Contents