Kenwood PS-52 - User Manual

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Summary

Safety Warnings and Operation Precautions

Cleaning Instructions

Guidelines for cleaning the exterior surfaces using appropriate materials and methods.

Specifications and Accessories

Technical Specifications

Detailed electrical and physical specifications for PS-31 and PS-52 models, including power requirements and dimensions.

Included Accessories

List of accessories included with the DC Power Supply, such as spare fuses and manuals.

Installation and Connection Guide

Installation Procedures

Steps for properly installing the DC Power Supply, including location selection and ventilation.

Connecting the Power Supply

Instructions for connecting the DC Power Cable to the radio and the AC power cable to the outlet.

Maintenance and Service

General Maintenance Information

Information on factory adjustments, warranty service, and recording maintenance history.

Service and Repair Procedures

Guidelines for returning equipment for repair, including packing and contact information.

Fuse Replacement

Instructions for safely replacing blown fuses, including warnings and part numbers for different voltage settings.

Summary

Safety Warnings and Operation Precautions

Cleaning Instructions

Guidelines for cleaning the exterior surfaces using appropriate materials and methods.

Specifications and Accessories

Technical Specifications

Detailed electrical and physical specifications for PS-31 and PS-52 models, including power requirements and dimensions.

Included Accessories

List of accessories included with the DC Power Supply, such as spare fuses and manuals.

Installation and Connection Guide

Installation Procedures

Steps for properly installing the DC Power Supply, including location selection and ventilation.

Connecting the Power Supply

Instructions for connecting the DC Power Cable to the radio and the AC power cable to the outlet.

Maintenance and Service

General Maintenance Information

Information on factory adjustments, warranty service, and recording maintenance history.

Service and Repair Procedures

Guidelines for returning equipment for repair, including packing and contact information.

Fuse Replacement

Instructions for safely replacing blown fuses, including warnings and part numbers for different voltage settings.

This document is an instruction manual for the Kenwood DC Power Supply models PS-31 and PS-52. It provides comprehensive information on the device's function, technical specifications, usage, and maintenance.

Function Description:

The Kenwood PS-31 and PS-52 are DC Power Supplies designed to provide a stable 13.8 VDC output. These units are engineered to rigid quality standards, ensuring satisfactory and dependable operation. They are suitable for powering radios and other equipment that require a stable DC power source. The manual covers different model versions for various markets, including U.S.A. and Canada, Europe and Oceania, U.K., and General Markets, indicating adaptability to different electrical standards.

Important Technical Specifications:

PS-31 Model:

Power Requirements:
- U.S.A.: 120 VAC ±10%, 60Hz
- Europe and General Markets: *120/230 VAC ±10%, 50/60Hz (Switchable)
- U.K. and Oceania: 240 VAC ±10%, 50/60Hz
Output Voltage: 13.8 VDC (Reference)
Rated Output Current:
- 20 A (25% duty cycle)
- 15 A (50% duty cycle)
Output Voltage Regulation:
- Within ±0.7 V (at 120/230 VAC ±10% variation with 15A)
- Within ±0.7 V (at load current variation from 2 to 15A)
Ripple Voltage: Less than 20 mVrms (at 13.8 VDC/15A)
Power Consumption: Approx. 500 W (at 13.8 VDC/20A)
Dimensions (W×H×D): 180×120×310mm [183×134×336 mm] or 6-27/32"×4-23/32"×12-7/32" [7-7/32″×5-9/32″×13-7/32"] (including projections)
Weight: Approx. 7.9 kg (17.4 lbs)

PS-52 Model:

Power Requirements:
- U.S.A.: 120 VAC ±10%, 60Hz
- Europe and General Markets: *120/230 VAC ±10%, 50/60Hz (Switchable)
- U.K. and Oceania: 240 VAC ±10%, 50/60Hz
Output Voltage: 13.8 VDC (Reference)
Rated Output Current:
- 22.5 A (25% duty cycle)
- 16 A (50% duty cycle)
- 20.5 A max. (Continuous operation for 1 hour)
Output Voltage Regulation:
- Within ±0.7 V (at 120/230 VAC ±10% variation with 22.5A)
- Within ±0.7 V (at load current variation from 2 to 22.5A)
Ripple Voltage: Less than 20 mVrms (at 13.8 VDC/22.5A)
Power Consumption: Approx. 550W (at 13.8 VDC/22.5A)
Dimensions (W×H×D): 180×120×310mm [183×134×336 mm] or 6-27/32"×4-23/32"×12-7/32" [7-7/32"×5-9/32″×13-7/32"] (including projections)
Weight: Approx. 7.6 kg (16.7lbs)

Usage Features:

Safety Precautions: The manual emphasizes critical safety warnings to prevent electric shock, fire, and equipment damage. Users are advised not to place the unit in direct sunlight, near heating appliances, or in areas of excessive dust or high humidity. It also warns against dropping conductive materials into the unit, placing objects on top of the cabinet, or touching the power plug with wet hands. Proper ventilation, with at least 15 cm (6 inches) of space behind the unit, is crucial.
Installation: Installation instructions include choosing a vibration-free, well-ventilated location. For Europe and General Markets versions, users must check and set the AC Voltage Selector on the side panel to the correct line voltage before connecting AC power.
Connection: The DC Power Supply connects to the radio via Output Terminals on the Rear Panel, with red lead to Plus (+) Terminal and black lead to Minus (-) Terminal. The AC power cable then connects to an AC outlet. It is crucial to turn off power switches of both the radio and the DC Power Supply before connecting or disconnecting the DC Power Cable and to observe polarity.
Operation: The unit features a POWER Switch (on/off) and a POWER ON Indicator. After connecting, the radio's POWER switch should be turned on after the DC Power Supply's POWER switch. If the protection circuit operates, both power switches should be turned off and the procedure repeated.
Mains Plug (United Kingdom): Specific instructions are provided for UK users regarding mains plug wiring. The wires are color-coded (Blue for Neutral, Brown for Live, Green and Yellow for Earth) and must be connected to the corresponding terminals (N or Black, L or Red, E or Green and Yellow). If a 13-amp plug is used, it must be fitted with a 5-amp fuse.

Maintenance Features:

Cleaning: The unit should be cleaned with a silicone cloth or a clean dry cloth. Volatile solvents like alcohol, paint thinner, gasoline, or benzine should not be used.
Fuse Replacement: The DC Power Supply is equipped with specific fuses depending on the version. If a fuse blows, the AC Power Cable must be disconnected, and an authorized Kenwood service facility should be contacted to repair the cause. Users are warned never to use a fuse of a higher rating. Fuse holder location varies by version (rear panel for U.S.A., inside top cover for others).
Supply Cord Replacement (Oceania version only): If the supply cord is damaged, it must only be replaced by a repair shop appointed by the manufacturer, as special tools are required.
General Service: The manual advises against attempting service or adjustment without factory authorization to avoid voiding the warranty. For repairs, the equipment should be packed in its original box with a full description of the problem.
Ordering Spare Parts: When ordering replacement parts, users must specify the Model and Serial Number, Schematic Number, Printed Circuit Board Number, Part Number and Name, and Quantity desired.

The manual also includes circuit diagrams (AVR UNIT and SCHEMATIC DIAGRAM) for technical reference, although these are primarily for authorized service personnel. It emphasizes that circuit designs are subject to change without notice due to technological advancements.