KEPCO JQE Series User manual

MODEL
OPERATOR’S MANUAL
IMPORTANT NOTES:
1) This manual is valid for the following Model and associated serial numbers:
MODEL SERIAL NO. REV. NO.
2) A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num-
bers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Docu-
mentation Office in New York, [phone], requesting the correct revision for your par-
ticular model and serial number.
3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.
Data subject to change without notice.
KEPCO®
THE POWER SUPPLIER™
KEPCO, INC. z131-38 SANFORD AVENUE zFLUSHING, NY. 11355 U.S.A. zTEL [phone] zFAX [phone]
email: [e-mail] zWorld Wide Web: http://www.kepcopower.com
KEPCO INC.
An ISO 9001 Company.
©2019, KEPCO, INC.
P/N 228-1730-R2
JQE 1/4 RACK
POWER SUPPLY
INCLUDESMODELSUFFIXM, DM
100W
JQE 6-10, JQE 15-6,
JQE 25-4, JQE 36-3,
JQE 55-2, JQE 75-1.5,
JQE 100-1

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1. Digital Meters
JQE models with the suffix DM indicates that the unit has digital meters in place of the analog meters.
(NOTE: analog meters are no longer available.) Voltage meter accuracy is 1%; current meter accuracy is
1.5%. Meter range selector switches are no longer needed with the digital meters and have been
removed on DM models. Refer to Figures 2, 3 and 4 for front panel views of the quarter rack, half rack,
and full rack DM models.
2, PAR. 1-9
ADD: b) Side Support “L” Bracket P/N 128-1775 mounts to vertical rails to provide additional side support
for rack-mounted models.19.6 in. long x 2.3 in. high x 3.5 in. wide. Two (2) required per unit.
FIGURE 1. SIDE SUPPORT “L” BRACKET P/N 128-1775
3. SECTION III Correction
The instructions throughout Section III are based on a value of the front panel VOLTAGE control (R102)
that requires an Ibof 1mA and a corresponding CONTROL RATIO (Kc), also referred to as Programming
Ratio, of 1000 Ohms/Volt.
To allow for the fact that the value of R102 may now be different, use the following procedure to deter-
mine the actual Iband the corresponding CONTROL RATIO (1/Ib)
1. Turn the unit off and disconnect unit from source power.
2. Remove the link between positions 5 and 6 of TB501 (for JQE quarter rack models: remove link
between positions 6 and 7 of TB1).
3. Set the Voltage potentiometer on the front panel to full clockwise.
4. Use a precision digital ohmmeter to measure the resistance between positions 4 and 5 of TB 501
(for JQE quarter rack models: measure resistance between positions 7 and 8 of TB1). This is the
actual resistance of the front panel VOLTAGE control (R102), referred to as
RVC Internal.
5. Use the measured value of R102 to calculate Ibas follows:
Ib= (EO+ (EO))/ RVC Internal
where:
EOis the nominal output voltage (Volts).
RVC Internal is the value of R102 measured in step 4 (Kilohms).
Ibis the actual control current.
EOfunctions as voltage headroom to allow full scale from the front panel control.
KEPCO®
THE POWER SUPPLIER™
OPERATOR MANUAL CORRECTION
JQE MODELS
JQE-r2/030519
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL [phone] FAX [phone]
email: [e-mail] World Wide Web: www.kepcopower.com
1

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6. Calculate the CONTROL RATIO as 1/Ib(Kilohms/Volt) using the value of Ibcalculated in step 5.
7. Use the calculated values of Iband CONTROL RATIO for all procedures of Section III.
As an example, referring to the Procedure: Precision Programming Ratio Adjustment, PAR. 16,
step c), instead of RVC = 5K Ohms, use RVC = 5 (1/Ib) (in Kilohms) in order to obtain an output
voltage of 5V.
FIGURE 2. FRONT PANEL VIEW OF JQE QUARTER RACK DM (DIGITAL METER) MODELS
FIGURE 3. FRONT PANEL VIEW OF JQE HALF RACK DM (DIGITAL METER) MODELS
131−1418

3/(4 Blank)
FIGURE 4. FRONT PANEL VIEW OF JQE FULL RACK DM (DIGITAL METER) MODELS

228-1351 COND/CONFORM 030519 A
Conditions of Conformance
When this product is used in applications governed by the requirements of the EEC, the following restric-
tions and conditions apply:
1. For European applications, requiring compliance to the Low Voltage Directive, 2006/95/EC, this power
supply is considered a component product, designed for "built in“ applications. Because it is incom-
plete in construction, the end product enclosure must provide for compliance to any remaining electri-
cal safety requirements and act as a fire enclosure. (EN61010-1:2010, Cl. 6, Cl. 7, Cl.8, and Cl. 9)
2. This power supply is designed for stationary installation, with mains power applied via a detachable
power supply cord or via direct wiring to the source power terminal block.
3. This power supply is considered a Class 1 (earthed) product, and as such depends upon proper con-
nection to protective earth for safety from electric shock. (EN61010-1 Cl. 6.5.5)
4. This power supply is intended for use as part of equipment meant for test, measurement and labora-
tory use, and is designed to operate from single phase, three wire power systems. This equipment
must be installed within a suitably wired equipment rack, utilizing a three wire (grounded) mains con-
nection. See wiring section of this manual for complete electrical wiring instructions. (EN61010-1 Cl.
6.5.5 and Cl.6.10.1)
5. For European applications requiring compliance with the RoHS 2 directive, 2011/65/EU, this power
supply is designed for scientific research and technological development, and is excluded from the
scope of the directive [2011, 65/EU, Article 2 (4) (j)].
6. This power supply has secondary output circuits that are considered hazardous, and which exceed
240 VA at a potential of 2V or more.
7. The output wiring terminals of this power supply has not been evaluated for field wiring and, therefore,
must be properly configured by the end product manufacturer prior to use.
8. This power supply employs a supplementary circuit protector in the form of a circuit breaker mounted
on the front panel. This circuit breaker protects the power supply itself from damage in the event of a
fault condition. For complete circuit protection of the end product, as well as the building wiring, it is
required that a primary circuit protection device be fitted to the branch circuit wiring. (EN61010-
1:2010, Cl. 9.6)
9. Hazardous voltages are present within this power supply during normal operation. All operator adjust-
ments to the product are made via externally accessible switches, controls and signal lines as speci-
fied within the product operating instructions. There are no user or operator serviceable parts within
the product enclosure. Refer all servicing to qualified and trained Kepco service technicians.

B228-1352 SAFETY - (COVER REMOVAL) 030519
SAFETY INSTRUCTIONS
1. Installation, Operation and Service Precautions
This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2,
Pollution Degree 2. Hazardous voltages are present within this product during normal operation. The
product should never be operated with the cover removed unless equivalent protection of the operator
from accidental contact with hazardous internal voltages is provided:
2. Grounding
This product is a Class 1 device which utilizes protective earthing to ensure operator safety.
3. Electric Shock Hazards
This product outputs hazardous voltage and energy levels as a function of normal operation. Operators
must be trained in its use and exercise caution as well as common sense during use to prevent accidental
shock.
There are no operator serviceable parts or adjustments within the product enclosure.
Refer all servicing to trained service technician.
Source power must be removed from the product prior to performing any servicing.
This product is factory-wired for the nominal a-c mains voltage indicated on the rat-
ing nameplate located adjacent to the source power connection on the product's rear
panel. To reconfigure the product input for other nominal mains voltages as listed
herein, the product must be modified by a trained service technician.
The PROTECTIVE EARTHING CONDUCTOR TERMINAL must be properly con-
nected prior to application of source power to the product (see instructions on instal-
lation herein) in order to ensure safety from electric shock.
PROTECTIVE EARTHING CONDUCTOR TERMINAL - This symbol indicates the
point on the product to which the protective earthing conductor must be attached.
EARTH (GROUND) TERMINAL - This symbol is used to indicate a point which is
connected to the PROTECTIVE EARTHING TERMINAL. The component installer/
assembler must ensure that this point is connected to the PROTECTIVE EARTH-
ING TERMINAL.
CHASSIS TERMINAL -This symbol indicates frame (chassis) connection, which is
supplied as a point of convenience for performance purposes (see instructions on
grounding herein). This is not to be confused with the protective earthing point, and
may not be used in place of it.
This symbol appears adjacent to any external terminals at which hazardous voltage
levels as high as 500V d-c may exist in the course of normal or single fault condi-
tions.
This symbol appears adjacent to any external terminals at which hazardous voltage
levels in excess of 500V d-c may exist in the course of normal or single fault condi-
tions.
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