Global Specialties 1415 User manual

User Manual
1415
Dual Output
DC Power Supply
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com

Safety Summary
A WARNING statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result in
injury or death to personnel.
A CAUTION statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result in
damage to or destruction of parts or the entire product.
The following safety precautions apply to both operating and
maintenance personnel and must be followed during all phases of
operation, service, and repair of this instrument.
WARNING
Before applying power to this instrument:
•Read and understand the safety and operational information
in this manual.
•Apply all the listed safety precautions.
•Verify that the voltage selector at the line power cord input is
set to the correct line voltage. Operating the instrument at
an incorrect line voltage will void the warranty.
•Make all connections to the instrument before applying
power.
•Do not operate the instrument in ways not specified by this
manual or by Global Specialties
Electrical Power
This instrument is intended to be powered from a CATEGORY II
mains power environment. The mains power should be 120 V RMS
or 240 V RMS. Use only the power cord supplied with the instrument
and ensure it is appropriate for your country of use.
Ground the Instrument
WARNING
To minimize shock hazard, the instrument chassis and cabinet must
be connected to an electrical safety ground. This instrument is

grounded through the ground conductor of the supplied, three-
conductor AC line power cable. The power cable must be plugged
into an approved three-conductor electrical outlet. The power jack
and mating plug of the power cable meet IEC safety standards.
WARNING
Do not alter or defeat the ground connection. Without the safety
ground connection, all accessible conductive parts (including control
knobs) may provide an electric shock. Failure to use a properly-
grounded approved outlet and the recommended three-conductor
AC line power cable may result in injury or death.
WARNING
Unless otherwise stated, a ground connection on the instrument's
front or rear panel is for a reference of potential only and is not to be
used as a safety ground.
Do not operate in an explosive or flammable atmosphere
WARNING
Do not operate the instrument in the presence of flammable gases
or vapors, fumes, or finely divided particulates.
Use only in office-type indoor setting
WARNING
The instrument is designed to be used in office-type indoor
environments. Do not operate the instrument:
•In the presence of noxious, corrosive, or flammable fumes,
gases, vapors, chemicals, or finely-divided particulates.
•In relative humidity conditions outside the instrument's
specifications.
•In environments where there is a danger of any liquid being
spilled on the instrument.
•In air temperatures exceeding the specified operating
temperatures.
•In atmospheric pressures outside the specified altitude limits
or where the surrounding gas is not air.

•In environments with restricted cooling air flow, even if the
air temperatures are within specifications.
•In direct sunlight.
CAUTION
This instrument is intended to be used in an indoor pollution degree
2 environment. The operating temperature range is 0 °C to 40 °C
and the operating humidity range is up to 80% relative humidity with
no condensation allowed. Measurements made by this instrument
may be outside specifications if the instrument is used in non-office-
type environments. Such environments may include rapid
temperature or humidity changes, sunlight, vibration and/or
mechanical shocks, acoustic noise, electrical noise, strong electric
fields, or strong magnetic fields.
Do not operate instrument if damaged
If the instrument is damaged, appears to be damaged, or if any
liquid, chemical, or other material gets on or inside the instrument,
remove the instrument's power cord, remove the instrument from
service, label it as not to be operated, and return the instrument to
Global Specialties for repair. Notify Global Specialties of the nature
of any contamination of the instrument.
Clean the instrument only as instructed
Do not clean the instrument, its switches, or its terminals with
contact cleaners, abrasives, lubricants, solvents, acids/bases, or
other such chemicals. Clean the instrument only with a clean dry
lint-free cloth or as instructed in this manual.
Not for critical applications
WARNING
This instrument is not authorized for use in contact with the human
body or for use as a component in a life-support device or system.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com

Do not touch live circuits
WARNING
Instrument covers must not be removed by operating personnel.
Component replacement and internal adjustments must be made by
qualified service-trained maintenance personnel who are aware of
the hazards involved when the instrument's covers and shields are
removed. Under certain conditions, even with the power cord
removed, dangerous voltages may exist when the covers are
removed. To avoid injuries, always disconnect the power cord from
the instrument, disconnect all other connections (for example, test
leads, computer interface cables, etc.), discharge all circuits, and
verify there are no hazardous voltages present on any conductors
by measurements with a properly-operating voltage-sensing device
before touching any internal parts. Verify the voltage-sensing device
is working properly before and after making the measurements by
testing with known-operating voltage sources and test for both DC
and AC voltages. Do not attempt any service or adjustment unless
another person capable of rendering first aid and resuscitation is
present. Do not insert any object into an instrument's ventilation
openings or other openings.
WARNING
Hazardous voltages may be present in unexpected locations in
circuitry being tested when a fault condition in the circuit exists.
Fuse replacement
WARNING
Fuse replacement must be done by qualified service-trained
maintenance personnel who are aware of the instrument's fuse
requirements and safe replacement procedures. Disconnect the
instrument from the power line before replacing fuses. Replace
fuses only with new fuses of the fuse types, voltage ratings, and
current ratings specified in this manual or on the back of the
instrument. Failure to do so may damage the instrument, lead to a
safety hazard, or cause a fire. Failure to use the specified fuses will
void the warranty.

Servicing
CAUTION
Do not substitute parts that are not approved by Global Specialties
or modify this instrument. Return the instrument to Global
Specialties for service and repair to ensure that safety and
performance features are maintained.
Cooling fans
CAUTION
This instrument contains one or more cooling fans. For continued
safe operation of the instrument, the air inlet and exhaust openings
for these fans must not be blocked nor must accumulated dust or
other debris be allowed to reduce air flow. Maintain at least 25 mm
clearance around the sides of the instrument that contain air inlet
and exhaust ports. If mounted in a rack, position power devices in
the rack above the instrument to minimize instrument heating while
rack mounted. Do not continue to operate the instrument if you
cannot verify the fan is operating (note some fans may have
intermittent duty cycles). Do not insert any object into the fan's inlet
or outlet.
Use correctly sized wires
WARNING
To connect a load to the power supply, use a wire diameter large
enough to handle the maximum continuous output short-circuit
current of the power supply without the wire overheating.
For continued safe use of the instrument
•Do not place heavy objects on the instrument.
•Do not obstruct cooling air flow to the instrument.
•Do not place a hot soldering iron on the instrument.
•Do not pull the instrument with the power cord, connected
probe, or connected test lead.
•Do not move the instrument when a probe is connected.

Compliance Statements
Disposal of Old Electrical & Electronic Equipment
(Applicable in the European Union and other
European countries with separate collection
systems). This product is subject to Directive
2012/19/EU of the European Parliament and the
Council of the European Union on waste electrical
and electronic equipment (WEEE), and in
jurisdictions adopting that Directive, is marked as
being put on the market after August 13, 2005, and should not be
disposed of as unsorted municipal waste. Please utilize your local
WEEE collection facilities in the disposition of this product and
otherwise observe all applicable requirements.
The 1415 is CE compliant.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com

Table of Contents
1General Information ..................................................................8
1.1 Product Overview 8
1.2 Features 8
1.3 Constant Voltage (CV) /Constant Current (CC) Mode 8
1.4 Package Contents 9
1.5 Front Panel Overview 10
1.6 Rear Panel 11
2Getting Started.........................................................................12
2.1 Input Power and Fuse Requirements 12
2.2 Fuse Requirements 12
2.3 Line Voltage Selection 13
2.3.1 Check and/or Change Fuse....................................................... 13
2.3.2 Check and/or Change Line Voltage Switch ............................... 13
2.4 Ventilation 14
3Operating the Power Supply ..................................................14
3.1 Setting the Variable Output Voltage & Current 14
3.2 System Configuration 15
3.2.3 Multiple Units in Series .............................................................. 15
3.2.4 Multiple Units in Parallel ............................................................ 16
3.3 Fixed 5V/3A Output 16
4Specifications ..........................................................................17
5Maintenance.............................................................................18
5.1 Preventative Steps 18
5.2 When the Unit is Not Turning On 18
5.3 Fuse Replacement 18
6Service and Warranty Information .........................................19
6.1 Limited One-Year Warranty 19
6.2 Calibration and Repair 19

1 General Information
1.1 Product Overview
Global Specialties Model 1415 Dual Output DC Power Supply
provides one variable output (0 – 30 V / 0 – 3 A) and one fixed
output (5 V / 3 A). The variable output features both constant current
& constant voltage modes with automatic crossover between the
two. Each mode has its own LED indicator. Connect multiple units in
series or in parallel for greater voltage or current output.
1.2 Features
•One variable output: 0-30 V / 0-3 A
•One fixed output: 5 V / 3 A
•Separate 3-digit displays for voltage and current on the
variable output
•Individual control of voltage and current for the variable
output
•CV (constant voltage) / CC (constant current) mode
operation
•LED indication for CV / CC mode
•Overload indication LED for the fixed output
•Operate multiple units in series or in parallel for greater
output
•Power On/Off switch on front panel
•Input voltage selection on rear side (120/240 VAC)
1.3 Constant Voltage (CV) /Constant Current (CC) Mode
The working characteristic of this power supply is called a constant
voltage/constant current automatic crossover type. This permits
continuous transition from constant current to constant voltage
modes in response to the load change. The intersection of constant
voltage and constant current modes is called the crossover point.
Figure 1 shows the relationship between this crossover point and
the load.
For example, if the load is such that the power supply is operating in
the constant voltage mode, a regulated output voltage is provided.

The output voltage remains
constant as the load increases,
up until the point where the
preset current limit is reached. At
that point, the output current
becomes constant and the output
voltage drops in proportion to
further increases in load.
The crossover point is indicated
by the front panel LED indicators.
The crossover point is reached when the CV indicator goes off and
the CC indicator comes on. Similarly, crossover from the constant
current to the constant voltage mode automatically occurs from a
decrease in load.
1.4 Package Contents
Please inspect the instrument mechanically and electrically upon
receiving it. Unpack all items from the shipping carton, and check for
any obvious signs of physical damage that may have occurred
during transportation. Report any damage to the shipping agent
immediately. Save the original packing carton for possible future
reshipment.
The 1415 power supply is shipped with the following contents:
•1415 Power Supply
•AC Power Cord
•User Manual
•Banana Plug to Alligator Clip Lead Wires (Black & Red)
Figure 1: CC, CV Characteristics
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com