The B&K Precision Model 1794 High Current Power Supply manual provides detailed instructions for installation, operation, and troubleshooting, including setting voltage and current limits, using remote programming and sensing, and ensuring proper ventilation and electrical connections. It also includes specifications for the power supply's performance, such as output voltage and current ranges, regulation, and overload protection, as well as guidance on initial inspection and rack mounting.
Manual Overview
The B&K Precision Model 1794 High Current Power Supply manual provides detailed guidance on installation, operation, and troubleshooting of the unit. For troubleshooting, the manual emphasizes checking for physical and electrical integrity upon unpacking and ensuring the unit meets electrical specifications. If issues arise, users are advised to verify connections and inspect for damage. The manual includes error diagnostics, focusing on automatic overload and short circuit protection features. Calibration involves setting voltage and current limits using front panel controls, with fine and coarse adjustments available for precise tuning. Board-level guidance is provided for input tap selection, particularly when switching between 120V and 230V operations, requiring adjustments on the Tap Selector Board and replacement of the input varistor. The power supply can be programmed remotely using a 5K potentiometer for voltage adjustments. Remote sensing is available to improve regulation by compensating for voltage drops in load leads. The unit’s performance is monitored via digital panel meters, and mode indicators signal whether the unit is in constant voltage or current mode.
Quick Issues Covered
- Diagnose power-up failures with initial inspection and electrical checks.
- Resolve calibration issues using coarse and fine voltage/current controls.
- Use schematics for circuit tracing and troubleshooting electrical faults.
Overview
The Model 1794 High Current Regulated D.C. Power Supply is a solid-state device suitable for bench or 19″ rack operation. It provides a well-regulated constant voltage and constant current supply, delivering 0-32V at 0-20Amps, adjustable throughout the output range. The unit can automatically switch between constant voltage and current modes, with output monitored by front panel meters. It features an output on/off switch, limit setting controls, remote programming, and remote sensing capabilities. The manual covers general information, specifications, installation, operating instructions, service instructions, part list, schematics, and circuit diagrams.
Specifications
- OUTPUT VOLTAGE 0-32V DC continuously variable with coarse and fine voltage controls.
- LOAD CURRENT 0-30 Amp max., continuously variable with coarse and fine controls.
- CONSTANT VOLTAGE MODE REGULATION LINE Less than + 0.01% + 2mV for 10% change in line voltage.
- LOAD Less than + 0.01% + 2mV for load change from zero to full load.
- RIPPLE & NOISE Less than 1mV rms max.(20 Hz – 20 MHz)
- CONSTANT CURRENT MODE REGULATION LINE Less than + 0.05% +10mA for 10% change in line voltage.
- LOAD Less than +0.05% +10mA for change in output voltage from 0 volts to maximum output voltage.
- RIPPLE & NOISE Less than 6mA rms.
- OVERLOAD PROTECTION Automatic overload and short circuit protection.
- TRANSIENT RESPONSE 100usecs to within 10mV of set output voltage for load change from 10% to 90%.
- STABILITY : Total drift within 8 hours, after + 0.2% + 10mV in constant voltage mode. warm up under constant line, + 0.5% + 10mA in constant current mode. load & temp.
- PANEL METERS Digital panel meters (marked V for voltmeter and A for ammeter) are provided with an accuracy of + 3 counts.
- MODE INDICATION Respective LED lights up when the unit is working in CV or CC mode.
- SET LIMIT/ ON-OFF Push Switches for Limit (V & A ) and output ON/OFF setting.
- OUTPUT CONTROLS Single turn coarse and fine voltage and current controls are provided on the front panel
- EXTERNAL PROGRAMMING Output voltage can be programmed by a variable resistance of 5K ( Pot )
- OPERATING TEMPERATURE 0-40°C.
- INPUT VOLTAGE 120/230V AC, + 10% 47 – 63Hz single phase.
- DIMENSIONS 19"(W) x 15.75"(D) x 5.24"(H).
- WEIGHT 50 Ibs. Net.
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
The installation of the Model 1794 High Current Power Supply involves several key steps:
1. Initial Inspection: Upon unpacking, inspect the unit for any transit damage. Retain all packing materials until the inspection is complete. Report any damage to the carrier and authorized representatives.
2. Physical Check: Ensure there are no broken knobs or connectors, and that the cabinet and panel surfaces are free of dents and scratches. Check that the meters are intact.
3. Electrical Check: Verify the unit against electrical specifications with an in-cabinet performance check to ensure proper operation.
4. Installation Data: The unit is ready for bench operation upon connection to a rated power source (120V AC).
5. Location: Ensure adequate space around the fan-cooled unit to prevent overheating. The ambient temperature should be below 40°C.
6. Rack Mounting: The unit can be rack-mounted using standard screws and optional rack attachments.
7. Input Power Requirements: The unit operates on 120V or 230V AC, 47-63Hz. It is factory-wired for 120V AC.
8. Input Tap Selection for 230V Operation: For 230V operation, adjust the shorting links on the Tap Selector board to 230V and replace the input varistor with a 20D 361K or equivalent.
9. Repackaging for Shipment: Use the original packaging for safe shipment, and attach a tag with the owner’s information and a description of any faults.
Operation
Refer to the PDF for details.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Manual (PDF – 105.5 KB)
Bk-precision-1794-instruction manual: assists technicians in troubleshooting and calibrating the Bk-precision 1794 model.
- Brand: Bk-precision-1794-instruction
- Model: MANUAL
- Type: Manual
- File size: 105.5 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-1794-instruction MANUAL Overview
The Bk-precision-1794 is a versatile precision measurement device designed for accurate electrical testing and diagnostics. Ideal for both professional technicians and hobbyists, this instrument provides reliable readings for voltage, current, resistance, and other key electrical parameters. Its robust design and user-friendly interface make it suitable for a wide range of applications, including circuit troubleshooting, component testing, and quality control.
Main Features & Specifications
- Model: -1794-
- High-accuracy digital display with backlight
- Measurement ranges: AC/DC voltage, current, resistance, capacitance
- Auto-ranging and manual ranging options
- Data hold and max/min recording functions
- Overload protection for enhanced safety
- Compact and durable housing with ergonomic design
- Low battery indicator
Basic Usage & Operation Tips
Before using the Bk-precision-1794, ensure the device is properly calibrated and the battery is fully charged. Select the appropriate measurement mode and range for your task. Connect the test leads securely to the device and the circuit under test. Always start with the highest range to prevent damage. Use the data hold feature to freeze readings for easier analysis. After use, turn off the device to conserve battery life.
Troubleshooting & Maintenance
If the device displays erratic readings or fails to power on, check the battery status and replace if necessary. Inspect test leads for damage or wear and replace if needed. Clean the device regularly with a soft, dry cloth; avoid using solvents or abrasive materials. If the device experiences persistent issues, consult the manual for detailed troubleshooting steps or contact authorized service centers.
Safety Reminder
Always follow standard electrical safety practices when using the Bk-precision-1794. Avoid measuring voltages beyond the specified limits and never use the device in wet or explosive environments. Use insulated test leads and wear appropriate personal protective equipment. Disconnect power before connecting or disconnecting test leads to prevent electric shock or damage to the device.