ITech IT6000C Series User Manual page 93

•
t: Time
•
U: Test voltage
•
t : Duration of pulse
d
•
t : Rising Slope
r
•
U : The supply voltage of the generator in operation: U
A
system, U = 28V in the 24V system. (see ISO 16750-1)
A
•
U : Peak voltage
S
Parameter
U S a (V)
79≤U
Ri a (Ω)
0.5≤Ri≤4
t (ms)
40≤t
d
t (ms)
–
r
a If not otherwise agreed, use the upper voltage level with the upper value for
internal resistance or use the lower voltage level with the lower value for in-
ternal resistance.
The pulse shape and parameters for an alternator with centralized load dump
suppression (Test B) are given in follow.
Copyright © Itech Electronic Co., Ltd.
Type of system
12V 24V
≤101 151≤U
S S
1≤Ri≤8
≤400 100≤t
d d
–
Power Supply Function
= 14V in the 12V
A
Minimum test
requirements
≤202
10 pulses at 1 min intervals
≤350
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