ITech IT6600C Series User Manual page 77

Parameter
79≤Us≤101
a
Us (V)
(Ω) 0.5≤Ri≤4
a
Ri
40≤t
t (ms)
d
t (ms)
r
Note: 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 internal resistance.

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
12V system, U = 28V in the 24V system. (see ISO 16750-1).
A

U : Peak voltage.
S
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
151≤Us≤202
1≤Ri≤8
≤400 100≤t ≤350
d d
- -
Power Supply Function
Minimum test
requirements
10 pulses at 1 min
intervals.
= 14V in the
A
68