Kbvw006a0b series sixteenth-brick power modules, Data sheet, Test configurations – GE Industrial Solutions KBVW006A0B Series User Manual

Page 6: Design considerations, Safety considerations, Feature description, Input filtering, Remote on/off

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GE

Data Sheet

KBVW006A0B Series Sixteenth-Brick Power Modules

36–75Vdc Input; 12.0Vdc Output; 6A Output Current

July 9, 2013

©2012 General Electric Company. All rights reserved.

Page 6

Test Configurations

TO OSCILLOSCOPE

CURRENT PROBE

L

TES T

12μH

B

A

TTE

R

Y

C

S

220μF

E.S.R.<0.1

@ 20°C 100kHz

33-100μF

Vin+

Vin-

NOTE: Measure input reflected ripple current with a simulated

source inductance (L

TEST

) of 12μH. Capacitor C

S

offsets

possible battery impedance. Measure current as shown
above.

Figure 7. Input Reflected Ripple Current Test Setup.

NOTE: All voltage measurements to be taken at the module

terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.

V

O

(+)

V

O

(

)

RESISTIVE

LOAD

SCOPE

COPPER STRIP

GROUND PLANE

10uF

1uF

Figure 8. Output Ripple and Noise Test Setup.

Vout+

Vout-

Vin+

Vin-

R

LOAD

R

contact

R

distribution

R

contact

R

distribution

R

contact

R

contact

R

distribution

R

distribution

V

IN

V

O

NOTE: All voltage measurements to be taken at the module

terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.

Figure 9. Output Voltage and Efficiency Test Setup.

 =

V

O

. I

O

V

IN

. I

IN

x

100

%

Efficiency

Design Considerations

Input Filtering

The power module should be connected to a low
ac-impedance source. Highly inductive source
impedance can affect the stability of the power module.
For the test configuration in Figure 7 a 33-100μF
electrolytic capacitor (ESR<0.7 at 100kHz), mounted
close to the power module helps ensure the stability of

the unit. Consult the factory for further application
guidelines.

Safety Considerations

For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard, i.e.
UL60950-1, CSA C22.2 No.60950-1, and VDE0805-
1(IEC60950-1).
If the input source is non-SELV (ELV or a hazardous

voltage greater than 60 V

dc

and less than or equal to

75V

dc

), for the module’s output to be considered as

meeting the requirements for safety extra-low voltage

(SELV), all of the following must be true:

The input source is to be provided with reinforced

insulation from any other hazardous voltages,

including the ac mains.

One V

IN

pin and one V

OUT

pin are to be grounded, or

both the input and output pins are to be kept
floating.

The input pins of the module are not operator

accessible.

Another SELV reliability test is conducted on the
whole system (combination of supply source and

subject module), as required by the safety agencies,
to verify that under a single fault, hazardous
voltages do not appear at the module’s output.

Note: Do not ground either of the input pins of the

module without grounding one of the output
pins. This may allow a non-SELV voltage to
appear between the output pins and ground.

The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
All flammable materials used in the manufacturing of
these modules are rated 94V-0, or tested to the UL60950

A.2 for reduced thickness.
For input voltages exceeding 60 V

dc

but less than or

equal to 75 V

dc

, these converters have been evaluated to

the applicable requirements of BASIC INSULATION
between secondary DC MAINS DISTRIBUTION input
(classified as TNV-2 in Europe) and unearthed SELV
outputs.
The input to these units is to be provided with a
maximum 5 A fast-acting fuse in the ungrounded input
lead.

Feature Description

Remote On/Off

Two remote on/off options are available. Positive logic
turns the module on during a logic high voltage on the

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