B+K precision 1665 User manual

INSTRUCTION
MANUAL
Model 1665/ 1666/ 1667
BENCH SWITCHING DC
POWER SUPPLIES
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

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TABLE OF CONTENTS
1. SAFETY INSTRUCTIONS AND PRECAUTIONS.....................................................3
2. INTRODUCTION..........................................................................................................4
3. SPECIFICATIONS ........................................................................................................5
4. CONTROLS AND INDICATORS................................................................................6
5. OPERATION PROCEDURES ......................................................................................9
Limited Warranty..................................................................................................................10
Service Information..............................................................................................................11

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1. SAFETY INSTRUCTIONS
1. Do not use this apparatus near water.
2. Clean only with dry cloth.
3. Do not block any ventilation openings.
4. Do not install unit near any heat source or heating emitting devices.
5. Prevent the power cord from being walked on or pinched.
6. Unplug this unit during lighting storms or when unused for long periods of time.
PRECAUTIONS
1. The unit must be used within its specified range.
2.The rated input voltages can be found on the rating label at the back the unit.
3.Before plugging into the AC supply, check with the rating label.
4. Refer all servicing to manufacturer.
WARNING
Model 1667 has maximum output voltage up to 60Vdc. It may be hazardous to touch metal part of the
output terminals. User must avoid touching live metal part of the output terminals.

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2. INTRODUCTION
These Laboratory Grade Switching DC Power Supplies were built with coarse and fine output voltage and current
limiting controls.
Current limiting control with automatic crossover of constant voltage (CV) and constant current (CC) indicators make this
series ideal for research and development work in laboratories.
Model 1665 only: V meter max. display
Above 19.99 output voltage, V meter display

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3. SPECIFICATIONS
Specifications 1665 1667 1667
Output Voltage: I-19VDC 1-40VDC 1-60VDC
Output Voltage Control: Fine & Coarse Fine & Coarse Fine & Coarse
Output Current: 0-10A 0-5A 0-3.3A
Ripple & Noise (P-P): 20mV 20mV 20mV
Load Regulation: 0.5% + 200mV 0.5%+200mV 0.5% +200mV
Line Regulation: 50mV 50mV 50mV
Input Voltage: 100 - 240 VAC, 50Hz / 60Hz
Meter Type: Digital LED
Voltmeter Resolution: 10 mV 10 mV 10 mV
Ammeter REsolution: 10 mA 10 mA 10 mA
Voltmeter Accuracy: 1% + 2 counts
Ammeter Accuracy: 0.5% + 2 counts
Indicators: CC & CV
Cooling System: Thermostatic control fan
Protection Devices: Approvals: CE
Dimension (WxHxD): 8" x 4.5" x 11" (205 x 115 x 275 mm )
Weight: 6.6lbs (3 Kg)
NOTE: Specifications and information are subject to change without notice. Please visit www.bkprecision.com for the most current product
information.

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4. CONTROLS AND INDICATORS
FRONT PANEL

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4. CONTROLS AND INDICATORS
REAR PANEL

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Front Panel
1. Power Switch -- Turns the power supply ON/OFF.
2. DC Voltmeter (LED Display)* -- Indicated the present output voltage with auto range.
3. DC Ammeter (LED display) -- Indicates the present output current with auto range.
4. Constant Current Mode (C.C.) -- Indicator Indicates the power supply is operating in constant current mode.
5. Constant Voltage Mode (C.V.) -- Indicator Indicates the power supply is operating in voltage mode.
6.
Current Fine Adjust -- Fine adjust knob for current limiting point and current value in constant current mode.
7. Current Coarse Adjust -- Coarse adjust knob for current limiting point and current value in constant current mode.
8. Voltage Fine Adjust -- Fine adjust knob for the output voltage in voltage mode.
9. Voltage Coarse Adjust -- Coarse adjust knob for the output voltage in voltage mode.
10. Output Terminal Positive (+) -- Terminal for tapping of positive (-}-) output.
11. Output Terminal Negative (-) -- Terminal for tapping of negative (-) output.
12. GND Terminal -- Chassis ground terminal. Normally, this is connected to either the + or - terminal depending on the
application.
Rear Panel
12. Fan -- Allow at least 80 mm space from wall.
13. Input Socket with fuse.

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5. OPERATING PROCDURES
Output Voltage Control - It is a dual control consisting of a coarse and fine potentiometer. The final DC voltage output is the sum of both
adjustments.
Current Limiter Control - It is a dual control (coarse/fine) that changes the DC current over the rated current range.
Ground Connections - For operating with negative or positive output terminal, grounded or without grounding. Connections (+ or -) are made by
using the shorting plate at the terminal.
REMARKS: When operating this supply without being grounded, high impedance leakage can exist between the power supply
circuitry and the chassis ground.
Basic Mode of Operation - This power supply is designed to operate as a constant voltage source or as a constant current source. Automatic
crossover to either mode of operation occurs when load conditions change as follows:
•Constant Voltage - The power supply will function as a constant voltage source as long as the load current is less than the current limiting
value set by the current limit operation. When the load current is equal to or greater than the current limit set, the power supply will automatically
crossover and operate as a constant source.
•Constant Voltage Automatic Crossover - The power supply will function as a constant source when the load voltage does not equal to the
voltage value set by the output voltage control. When the load voltage equals to the value set by the output voltage control the power supply will
automatically cross over and operate as a constant voltage source.
•Presetting Current Limiting Value - There are occasions when you will not want your load to draw too much current or want to prevent
any damage, you can preset the current limiting value as follows : Short circuit the output terminals and adjust the current limit control to your
desired value.

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Limited One-Year Warranty
B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from defects in
workmanship and materials for a period of one year from date of purchase.
B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be
accompanied by proof of the purchase date in the form of a sales receipt.

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Service Information
Warranty Service: Please return the product in the original packaging with proof of purchase to the address below. Clearly state in writing
the performance problem and return any leads, probes, connectors and accessories that you are using with the device.
Non-Warranty Service: Return the product in the original packaging to the address below. Clearly state in writing the performance problem
and return any leads, probes, connectors and accessories that you are using with the device. Customers not on open account must include
payment inthe form ofa money order orcredit card. For the most current repair charges please visit.
Return all merchandise to B&K Precision Corp. with pre-paid shipping. The flat-rate repair charge for Non-Warranty Service does not include
return shipping. Return shipping to locations in North American is included for Warranty Service. For overnight shipments and non-North
American shipping fees please contact B&K Precision Corp.
Include with the returned instrument your complete return shipping address, contact name, phone number and description of
problem.