The manual for the Model 1550 DC Power Supply provides instructions for setup, operation, and troubleshooting, including details on setting output voltage and current, using the USB charger, and ensuring proper grounding. It also outlines safety precautions, such as avoiding water exposure and ensuring proper ventilation, and describes features like constant voltage and current modes, over-voltage protection, and over-temperature protection.
Manual Overview
The Bk Model 1550 DC Power Supply manual provides detailed instructions on troubleshooting, error codes, diagnostics, calibration, and adjustments. For troubleshooting, the manual emphasizes checking connections and ensuring the power supply is not overloaded. Error codes are displayed on the LCD panel, indicating whether the unit is in constant voltage (CV) or constant current (CC) mode. Calibration involves setting the desired voltage and current using the keypad, with automatic crossover between CV and CC modes based on load conditions. The manual advises on grounding options, including negative, positive, and floating grounds, to prevent high impedance leakage. For board-level guidance, it highlights the importance of using a grounded 3-pin AC source and ensuring proper ventilation. The unit features over-voltage protection (OVP) and over-temperature protection, automatically reducing output to prevent damage. Technicians are advised to replace fuses with the same type and rating, and to consult qualified personnel for servicing.
Quick Issues Covered
- Diagnose power-up failures with incorrect voltage or current settings.
- Calibrate output voltage/current using keypad controls and LCD feedback.
- Trace circuits using schematics for troubleshooting and repair.
Overview
The Model 1550 DC Power Supply with USB Charger Output is a micro-controller based power supply capable of providing 1-30V and 0-3.3A, with a total supply capability of 100W. It features a digital keypad for easy setting of output voltage and current, and is designed for laboratory, workshop, or educational use where space is limited. The power supply includes a USB charger output, constant current operation, tracking over-voltage protection, and a floating ground design. The manual covers important safety and operation instructions, including warnings and cautions for proper use, environmental conditions for operation, and detailed procedures for setting and using the power supply.
Specifications
Input Voltage 100 — 120Vac (50~60Hz)
Controls & Indicators
Power Switch: Turns the power supply on-off, when it is on the front display lights up.
AC Input Socket with Fuse: Concealed Fuse box (please open the cover to get to the fuse).
V: Output Voltage Setting keypad.
A: Output Current Setting keypad.
“+”: Ascend Setting keypad. Press to ascend the numerical values.
“.”: Descend Setting keypad. Press to descend the numerical values.
Output On/Off push button.
USB Output Socket: Standard USB DC power 5V, 400mA. To charge or to power portables and cell phones.
Output Terminal Positive (+) Red color.
GND Terminal (:) Green color: Chassis ground terminal, normally this is to be short to (+) or (-) as required by user.
Output Terminal Negative (-) Black color.
LCD Display panel showing: 3 digit voltage, current meter, (CV) constant voltage mode, (CC) constant current mode, Output Terminal on/off state.
Installation / Setup
The installation/setup highlights for the Model 1550 DC Power Supply include the following key points:
– Use a grounded 3-pin AC source.
– Ensure the unit is for indoor use only and avoid placing it in humid, dusty, or direct sunlight locations, or near any heat source.
– Before connecting to local AC mains, check the rating label at the back of the unit.
– Do not block any ventilation openings.
– The gauge size of the input power cable must be at least 0.75mm², and the total length of the power cable must not exceed 3 meters.
– The unit must be used within the specified rating to avoid damage from excessive continuous loading.
– The operational environmental conditions include 10-80% relative humidity, with a maximum of 80% at 31°C, decreasing linearly to 50% at 40°C, and an altitude up to 2000 meters.
– Installation category is CAT 2, and pollution degree is 2, with mains supply voltage fluctuation up to +10% of the normal voltage.
There is no specific information on wiring, clearances, or calibration.
Operation
The 1550 DC Power Supply operates as a constant voltage or constant current source, with automatic crossover based on load conditions. To set the voltage, press the voltage keypad and adjust with the ascend/descend keys. For current, press the current keypad and adjust similarly. The power supply switches to constant current mode if the load current meets or exceeds the preset limit, indicated by “CC” on the display. To preset the current limit, set the output voltage to 3V, turn off the output, short the terminals, turn the output back on, and adjust the current. For operation, connect to AC mains, switch on the power supply, set the desired voltage, connect the load, and ensure the display shows “CV” for constant voltage mode. If “CC” appears, adjust voltage or current as needed. The unit includes over voltage and over temperature protection features.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
WARNING:
– Do not use the power supply near water.
– Do not operate or touch the power supply with wet hands.
– Do not open the casing of the power supply when it is connected to AC mains.
– Refer all servicing to qualified service personnel only.
– Before replacing the AC fuse at the AC socket, find out and clear up the cause first. Replace the AC fuse with the same type and rating as the original fuse.
CAUTION:
1. Use a grounded 3 pin AC source.
2. This unit is for indoor use only.
3. Do not operate or place this unit in a humid, dusty, in direct sunlight location or near any heat source.
4. Before plugging into local AC mains, check with the rating label at the back of the unit.
5. Do not block any ventilation openings of the unit.
6. This unit must be used within the specified rating; regular excessive continuous loading may cause damage to the power supply.
7. The gauge size of the input power cable must be at least 0.75mm² and the total length of the power cable must not exceed 3m.
Download MANUAL Manual (PDF – 261.5 KB)
Bk-precision-1550-instruction manual assists technicians in troubleshooting and calibrating the Bk-precision 1550 model.
- Brand: Bk-precision-1550-instruction
- Model: MANUAL
- Type: Manual
- File size: 261.5 KB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Bk-precision-1550-instruction MANUAL Overview
The Bk-precision-1550 is a versatile digital multimeter designed for precise electrical measurements in both professional and hobbyist environments. This reliable instrument provides accurate readings of voltage, current, resistance, and continuity, making it an essential tool for troubleshooting and testing electronic circuits and electrical systems.
Main Features and Specifications
- Measurement Functions: AC/DC Voltage, AC/DC Current, Resistance, Continuity, Diode Test
- Display: Large backlit LCD for clear readings
- Auto and Manual Ranging Modes
- Data Hold and Max/Min Recording
- Overload Protection on all ranges
- Input Impedance: 10MΩ for voltage measurements
- Battery Powered with low battery indicator
- Compact and ergonomic design for easy handling
Basic Usage and Operation Tips
Before using the Bk-precision-1550, ensure the device is powered with fresh batteries and the test leads are properly connected. Select the appropriate measurement mode and range for your application. When measuring voltage or current, always connect the test leads in parallel or series respectively, following standard electrical procedures. Use the data hold function to freeze readings for easier analysis. Avoid switching ranges while measuring to prevent inaccurate readings or damage.
Troubleshooting and Maintenance
If the display shows erratic readings or no response, check the battery status and replace if necessary. Inspect test leads for any damage or wear and replace if needed. Clean the device regularly with a dry cloth and avoid exposure to moisture or extreme temperatures. If the multimeter fails to operate correctly after these checks, consult the full manual or contact authorized service centers.
Safety Reminder
Always observe proper safety precautions when using the Bk-precision-1550. Never exceed the specified input limits to avoid electric shock or damage to the device. Use caution when measuring high voltages and currents, and ensure the device is set to the correct measurement mode before connecting to the circuit. Keep the multimeter away from flammable materials and store it in a safe, dry place when not in use.