KEPCO ATE 6-50 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. !131-38 SANFORD AVENUE !FLUSHING, NY. 11355 U.S.A. !TEL [phone] !FAX [phone]
email: [e-mail] !World Wide Web: http://www.kepcopower.com
KEPCO INC.
An ISO 9001 Company.
©201, KEPCO, INC.
P/N 228-1725 REV 
ATE 3/4 RACK
POWER SUPPLY
AUTOMATIC TEST EQUIPMENT
500W
ATE 6-50, ATE 15-25, ATE 25-20,
ATE 36-15, ATE 55-10, ATE 75-8,
ATE 100-5, ATE 150-3.5

1
Please note the following corrections to the standard Instruction Manual for ATE models plus all the other
manuals for specials or “-MG” models derived from it as indicated:
A) PAR. 3.8 PARALLEL OPERATION OF ATE (-MG MODELS) POWER SUPPLIES
Add the following note:
NOTE THE FOLLOWING
CAUTION: When connecting units in parallel, use an external master ON/OFF circuit
breaker or switch to simultaneously turn on/off all units connected in parallel. The individ-
ual circuit breakers should be left in the ON position working as an overcurrent and over-
voltage protection circuit and should not be used as a power ON/OFF switch.
If the above recommendations are not met, the internal turn-off overshoot eliminator cir-
cuit could be damaged to the point where it is no longer operational.
B) SECTION III, FIGURES 3-4, 3-5, 3-6, 3-8, 3-10, 3-14, 3-15, 3-16, 3-20, 3-22, 3-25,
3-26, 3-28, 3-30
These diagrams show the load connected using remote sensing. For local sensing leave the links
between TB201 terminals 2 (-) S and 3 (-) M and between terminals 5 (+) M and 6 (+) S in place. Discon-
nect the remote sensing wires from TB 201 terminals 2 (-) S and 6 (+) S to the load.
C) PAR. 3-37 through 3-90 REDUCING RISE TIME DELAY WHEN USING EXTERNAL
PROGRAMMING, EITHER FAST OR SLOW MODE
To reduce the rise time delay, make sure that for the “low” level of the programming signal the output volt-
age has a small value, at least 0.1% of nominal (with the correct polarity).
D) PAR. 3-115. PROGRAMMING WITH REFERENCE TO THE NEGATIVE POWER SUPPLY
OUTPUT
When the ATE power supply is used in FAST MODE, with a programming reference to the negative out-
put of the unit (see PAR. 3-115 and Figure 3-29) some oscillation may be present at the output. This can
be avoided by installing a ceramic capacitor between PC 12, pins 1 and 2. The capacitor value is model
dependent, within the range 1.2nF to 4.7nF, and it must be rated for more than the nominal output volt-
age of the unit.
NOTES:
1. When the ceramic capacitor is installed at PC 12, pins 1 and 2, the 3-dB frequency bandwidth of the
unit in FAST MODE is reduced by a factor of from 1.5 to 2.5. Correspondingly, the response time will be
increased by the same factor.
KEPCO®
THE POWER SUPPLIER™
INSTRUCTION MANUAL CORRECTION
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL [phone] FAX [phone]
email: [e-mail] World Wide Web: http://www.kepcopower.com
ATE INST MAN-r2/060118

2
2. To reduce the rise time delay, see C) above: REDUCING RISE TIME DELAY ....
3. To reduce the fall time delay, adjust the current limit to a higher value than maximum application cur-
rent to ensure that for the “high” level of the programming signal the unit is not forced to enter current limit
mode.
4. To prevent the unit from going into over-voltage protection and shutting down when the low impedance
programming source is disconnected, install a 10 Kohm resistor (1%, 0.125W) at the input programming
terminals of PC 12.
5. To reduce a-c line-related noise at the output, connect one of the following to the ATE chassis GND
terminal.: 1) the return of the programming source, 2) the corresponding output terminal of the ATE, or 3)
the corresponding Load terminal. In addition, make sure that all devices are tied to the same GND con-
nection; it is recommended that all devices in use by powered by the same a-c outlet.
E) FIGURE 3-29 CORRECTIONS:
Ea: 6V to 100V models: Ea = 0 to (-) 1V
150V models: Ea = 0 to (-) 0.5V
325V models: Ea = 0 to (-) 0.332V
Eb: All models Eb = 0 to 10V
F) PAR. 3-117 CORRECTIONS
PREAMP “A” is used to perform . . . signal back to the required level (0 to 10V).
G) PAR. 3-118 CORRECTIONS
Rb’: 6V to 100V models Rb’ = 100K Ohms
150V models Rb’ = 49.9K Ohms
325V models Rb’ = 33.2K Ohms
H) PAR. 3-119 CORRECTIONS
Gain: 6V to 100V models Gain = 10
150V models: Gain = 20
325V models: Gain = 30 .1
Rf (ext): 6V to 100V models Rf (ext) = 10K Ohms
150V models: Rf (ext) = 20K Ohms
325V models: Rf (ext) = 30.1K Ohms
For 325V models, add sentence to Note:
Note: The selected resistors . . . tolerance of 1%. Ra and Rb should have a power rating of 0.5W and
voltage rating of 500V minimum. They should be wired . . . .
J) PC 12 PIN FUNCTIONS
See Figure 1 for Pin functions of PC 12 connector for ATE 1/4 Rack Models. Also shown are connections
for a prewired PC 12 connector, PC 13, allowing local control of the unit.
See Figure 2 for Pin functions of PC 12 connector for ATE 1/2, 3/4 and Full Rack Models. Also shown are
connections for a prewired PC 12 connector, PC 14, allowing local control of the unit.

3
FIGURE 1. PC 12 PIN FUNCTIONS FOR 1/4 RACK MODELS SHOWING PRE-WIRED
LOCAL CONTROL CONNECTIONS (PC 13)

4
FIGURE 2. PC 12 PIN FUNCTIONS FOR 1/2, 3/4 AND FULL RACK MODELS SHOWING PRE-WIRED
LOCAL CONTROL CONNECTIONS (PC 14)

5
K) DIGITAL METERS
ATE 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 0.02%; current meter accu-
racy is 1.5%. Refer to Figures 3, 4, 5 and 6 for front panel views of the quarter rack, half rack, three-quar-
ter rack and full rack DM models.
FIGURE 3. FRONT PANEL VIEW OF ATE QUARTER RACK DM (DIGITAL METER) MODELS
FIGURE 4. FRONT PANEL VIEW OF ATE 1/2 RACK DM (DIGITAL METER) MODELS
CURRENT control
Adjusts output current
from 0 to I max
Voltmeter
Monitors output voltage
from 0 to E max
VOLTAGE Mode Indicator
Lights in Voltage Mode
A-C power ON/OFF
switch/circuit breaker
Serves as a-c power
switch and turns off
a-c line upon overload
VOLTAGE control
Adjusts output voltage
from 0 to E max
o
o
Crowbar SET LEVEL
adjustment (recessed)
Adjusts trigger level of
crowbar circuit
oCrowbar DISARM
pushbutton switch
Push to set crowbar
trigger level
Crowbar SET LEVEL indicator
Lights when crowbar
is triggered on
Ammeter
Monitors output current
from 0 to I max
CURRENT Mode Indicator
Lights in Current Mode
o
Voltmeter
Monitors output voltage
from 0 to E max
VOLTAGE Mode
indicator
Lights in Voltage Mode
A-C power ON/OFF
switch/circuit breaker
Serves as a-c power
switch and turns off
a-c line upon overload
o
Ammeter
Monitors output current
from 0 to I max
CURRENT Mode Indicator
Lights in Current Mode
o
CURRENT control
Adjusts output current
from 0 to I max
VOLTAGE control
Adjusts output voltage
from 0 to E max
oo
Crowbar SET LEVEL
adjustment (recessed)
Adjusts trigger level of
crowbar circuit
Crowbar SET LEVEL
indicator
Lights when crowbar
is triggered on
Crowbar DISARM
pushbutton switch
Push to set crowbar
trigger level

6
FIGURE 5. FRONT PANEL VIEW OF ATE 3/4 RACK DM (DIGITAL METER) MODELS
FIGURE 6. FRONT PANEL VIEW OF ATE FULL RACK DM (DIGITAL METER) MODELS
Crowbar SET LEVEL
adjustment (recessed)
Adjusts trigger level of
crowbar circuit
Crowbar SET LEVEL
indicator
Lights when crowbar
is triggered on
Crowbar DISARM
pushbutton switch
Push to set crowbar
trigger level
VOLTAGE Mode
indicator
Lights in Voltage Mode
Voltmeter
Monitors output voltage
from 0 to E max
o
Ammeter
Monitors output current
from 0 to I max
o
CURRENT Mode
indicator
Lights in Current Mode
A-C power ON/OFF
switch/circuit breaker
Serves as a-c power
switch and turns off
a-c line upon overload
CURRENT control
Adjusts output current
from 0 to I max
VOLTAGE control
Adjusts output voltage
from 0 to E max
oo
Crowbar SET LEVEL
indicator
Lights when crowbar
is triggered on
Crowbar SET LEVEL
adjustment (recessed)
Adjusts trigger level of
crowbar circuit
Crowbar DISARM
pushbutton switch
Push to set crowbar
trigger level
CURRENT Mode
indicator
Lights in Current Mode
Ammeter
Monitors output current
from 0 to I max
o
Voltmeter
Monitors output voltage
from 0 to E max
o
VOLTAGE Mode
Indicator
Lights in Voltage Mode
A-C power ON/OFF
switch/circuit breaker
Serves as a-c power
switch and turns off
a-c line upon overload
VOLTAGE control
Adjusts output voltage
from 0 to E max
o
CURRENT control
Adjusts output current
from 0 to I max
o

228-1351 COND/CONFORM 060118 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) 060118
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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