
E
xclusive
C
ertification
C
orp
.
Tel:886-2-2792-3366 Fax:886-2-2792-1100
Issued date: Dec. 16, 2003
17 of 17
EMC
Test Report: CE03111004-A
10. Test Procedure (Surge)
a. Climatic
conditions
The climatic conditions shall comply with the following requirements :
ambient temperature : 15 to 35
℃
℃
relative humidity : 10 % to 75 %
atmospheric pressure : 86 kPa to 106 kPa ( 860 mbar to 1060 mbar )
b. Electromagnetic
conditions
the electromagnetic environment of the laboratory shall not influence the test results.
c. The test shall be performed according the test plan that shall specify the test set-up with
generator and other equipment utilized;
test level ( voltage/current );
generator
source
impedance;
internal or external generator trigger;
number of tests : at least five positive and five negative at the selected points;
repetition rate : maximum 1/min.
inputs and outputs to be tested;
representative operating conditions of the EUT;
sequence of application of the surge to the circuit;
phase angle in the case of a.c. power supply;
actual installation conditions, for example :
AC : neutral earthed,
DC : ( + ) or ( - ) earthed to simulated the actual earthing conditions.
d. If not otherwise specified the surges have to be applied synchronized to the voltage phase at the
zero-crossing and the peak value of the a.c. voltage wave ( positive and negative ).
e. The surges have to be applied line to line and line(s) and earth. When testing line to earth, the
test voltage has to be applied successively between each of the lines and earth, if there is no other
specification.
f.
The test procedure shall also consider the non-linear current-voltage characteristics of the
equipment under test. Therefore the test voltage has to be increased by steps up to the test level
specified in the product standard or test plan.
g. All lower levels including the selected test level shall be satisfied. For testing the secondary
protection, the output voltage of the generator shall be increased up to the worstcase voltage
breakdown level ( let-through level ) of the primary protection.
h. If the actual operating signal sources are not available, the may be simulated. Under no
circumstances may the test level exceed the product specification. The test shall be carried out
according the a test plan.
i.
To find all critical points of the duty cycle of the equipment, a sufficient number of positive and
negative test pulses shall be applied. For acceptance test a previously unstressed equipment
shall be used to the protection devices shall be replaced.