•
Casing temperature 47 °C
•
Fixed temperature difference -10 °C
•
Charging current 2 A
•
Charging current effect 3.5 °C/A
•
Ambient temperature (47-10) °C - 2 A * 3.5 °C/A = 30 °C
4.6
Load limiter
The device can detect excessive loading of battery due to jammed disconnector
switchgear and disconnect the load before the actual physical overcurrent fuse trips.
The overload decision is based on both the consumed charge and duration of the
loading. The current is measured usually by an external Hall sensor connected to
analog input 1 (X4 3-4). The device uses a normally closed relay (X4 1-2, Load Cut)
to break down the loading circuit by opening the relay contacts for a moment. Usually
this is used to cut the holding circuit of motor contactors, not directly the motor
current.
4.6.1
Overload detection settings
The overload detection settings are defined on section [LOAD_LIMITER]. The
detection is based on the load current measurement by the external Hall sensor
connected to X4 pins 3 and 4.
Accumulated Charge
Time
activation_current
deactivation_current
activation_time_ms
deactivation_time_ms
0
Accumulated Time
STATUS
Idle
Accumulating
Idle
C
u
rr
e
n
t
GUID-35015FD5-8184-40F1-B0C6-CAFFC0CE5362 V1 EN
Figure 16:
Load limiter measurements
1MRS758459 C
Section 4
Functional description
ARC600
35
User Manual
