ITech IT6000C Series User Manual page 110

ООО "Техэнком" Контрольно-измерительные приборы и оборудование
Ri a (Ω)
0.5≤Ri≤4
t (ms)
40≤t
d
d
t (ms)
–
r
a If not otherwise agreed, use the upper voltage level with the upper value for in-
ternal resistance or use the lower voltage level with the lower value for internal
resistance.
The following general considerations of the dynamic behavior of alternators dur-
ing load dump apply:
•
The internal resistance of an alternator, in the case of load dump, is mainly a
function of alternator rotational speed and excitation current.
•
The internal resistance, Ri, of the load dump test pulse generator shall be
obtained from the following relationship.
– U : The specified voltage of the alternator
nom
– I : The specified current at an alternator speed of 6000r/min
rated
– N : The actual alternator speed, unit: round per minute (r/min)
act
•
The pulse is determined by the peak voltage U
the internal resistance R
of U are correlated with small values of R
n
high values of R and t
i
How to recall this waveform from menu (take Test A 12V as an example):
1. Press the composite keys [Shift]+[I-set] (Function) on the front panel to en-
ter the function menu.
2. Use the knob or press the Up/Down key to select 3.Road-Vehicles = Off
and press [Enter].
3. Press the Left/Right key to select ISO16750-2 and press [Enter] to confirm.
4. Press the Left/Right key to select Load-Dump, and press [Enter] to confirm.
5. Press the Left/Right key to select Test A, and press [Enter] to confirm.
6. Press the Left/Right key to select 12V, and press [Enter] to confirm.
Copyright © Itech Electronic Co., Ltd.
1≤Ri≤8
≤400 100≤t ≤350
d
–
, and the pulse duration t
i
and t
i
. For the test voltage U
d
www.tehencom.com
Power Supply Function
, the clamping voltage U
n
; in all cases small values
d
, and high values of U
d
please refer to ISO16750-1.
A
,
S
with
n
99