Kamstrup 162M User Manual

TECHNICAL DESCRIPTION Kamstrup 162M/382M
5512-1040 GB/05.2012/Rev. C1
41
P (kW), I (A)
P
d,
I
d
t
K1*P
d,
K1*I
d
K3*P
d,
K3*I
d
K2*P
d,
K2*I
d
t
1
t
1
+ t
2
t
1
+ t
2
+ t
3
Figure 17: Differentiation of Smart Disconnection.
6.4.2 Overcurrent protection
To secure the breaker against overcurrent e.g. at short circuits, the meter has an upper limit, the short circuit
current I
k
. If the current exceeds this limit, the breaker does not disconnect. Thus, the risk of defects is minimized.
6.4.3 Current-controlled disconnection
Current-controlled disconnection is based on RMS current with average determination every 1 sec. Disconnection
is effected if one of the phase currents I
L1
, I
L2
, I
L3
exceeds the limit I
d
*k
x
for a configured time period; t
1
, t
1
+t
2
or
t
1
+t
2
+t
3
.
6.4.4 Power-controlled disconnection
Power-controlled disconnection is based on the total power. Disconnection is effected if the total phase power
exceeds the limit I
d
*k
x
for a configured time period; t
1
, t
1
+t
2
or t
1
+t
2
+t
3
.
6.4.5 Reconnection
Reconnection can be configured to be either manual or automatic. No matter if manual or automatic reconnection
is selected, reconnection cannot be effected until after the wait time, t
reconnect
since reconnection, has expired.
6.4.6 Disconnection basis
Disconnection basis decides if smart disconnect or prepayment is active and on which basis the disconnection is
effected. It is possible to select:
- No function: The smart disconnect function is deactivated.
- Power-controlled: Disconnection is effected when a programmed power limit is exceeded.
- Current-controlled: Disconnection is effected when a programmed current limit is exceeded.
- Prepayment: The prepayment function controls the disconnection. See section 6.5.
Disconnection basis is selected as part of the disconnection configuration, see section 10.8.
6.4.7 Disconnection status
It is possible to read the status of the output voltage per phase to verify that disconnection has been effected
and, otherwise, to ensure that all phases are connected.

Kamstrup 162M Specifications

General

Brand	Kamstrup
Model	162M
Category	Measuring Instruments
Language	English