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Module 96-PA-RCM / 96-PA-RCM-EL
6.9 Residual current limit values
0 kW
5 kW
10 kW
15 kW
20 kW
25 kW
200 mA
150 mA
100 mA
50 mA
0 mA
Permitted RCM curr
ent
Reference value
For setting and calculation of the residual current
limit value, the basic device with module requires
parameters which are set in the
GridVis
®
soft-
ware
.
Depending on the mode, the limit value
calculation requires the following parameters:
1.
“Calculation of the dynamic residual cur-
rent limit value”
·Minimum overrun time.
·Maximum for the residual current.
·Warning when the set percent value of the
calculated dynamic residual current limit value is
reached (cf. section 2.7 on Page 13).
·Reference value.
·Tolerated residual current (dynamic value per
reference value unit).
·Residual current pro consumer.
·Number of consumers.
·Offset for residual current measurement.
6.9.1 Example graph “Calculation of the dynamic residual current limit value”
The example graph shows the relationship between the permitted residual current and the reference value
power (of the system) with the following settings:
·Reference value: Power in kW
·Dynamic scaling: 10 mA / kW
·Absolute maximum for residual current: 200 mA
·Offset for residual current measurement: 20 mA
Fig. Example
graph
with the mode
“Calculation
of the dynamic
residual cur-
rent limit value”
The graph shows the user of the function:
·That the dynamic limit value calculation is active (static limit value calculation = horizontal line).
·The permitted residual current (RCM current) per power reference value.
·At what power reference value the maximum for the RCM current is reached.
2.
“Calculation of the static residual current
limit value”
·Minimum overrun time.
·Warning when the set percent value of the static
residual current limit value is reached.
·Residual current limit value
3.
“Calculation of the incremental residual
current limit value”
·Minimum overrun time.
·Warning when the set percent value of the incre-
mental residual current limit value is reached.
·Reference value.
·Input of up to 10 residual current limit values for
the respective power levels (increments).
Abs. maximum for residual current
20 mA
Offset for residual current measurement
