Inhaltsverzeichnis
Werbung
Verfügbare Sprachen
Verfügbare Sprachen
www.janitza.de
3.9
Functions
Depending on the version of the AKM busbar
tap-off unit and the installed measurement device
(UMG 806, UMG 96RM-E, UMG 96RM-PN,
UMG 96-PA, UMG 96-PA
MID+
103-CBM), the following functions can be realized:
3.9.1
Energy measurement
For the measurement of your relevant electrical
parameters, please refer to the usage information
for the following Janitza measurement devices:
· UMG 806
· UMG 96RM-E
· UMG 96RM-PN
· UMG 96-PA
MID +
· UMG 96-PA
· UMG 96-PQ-L
· UMG 103-CBM
3.9.2
Measurement device protection
The measurement device is protected by a circuit
breaker built into the AKM.
3.9.3
Current measurement
The AKM measures all phase currents and the
neutral conductor current. Depending on the
variant of the AKM, the following current transfor-
mers are installed for this purpose:
· AKM xxx-125 --> 150 A/5 A, Cl.1
· AKM xxx-250 --> 250 A/5 A, Cl.1
· AKM xxx-400 --> 400 A/5 A, Cl.1
· AKM xxx-530 --> 600 A/5 A, Cl.1
Deviating from this, devices of the AKM 96PA-
MID type are equipped with clearing transformers
Kl. 0.5.
3.9.4
Residual current measurement (RCM)
The following transformers are used to measure
residual currents of type A at the residual current
input of the installed measurement device:
· AKM xxx-125 --> CT-AC RCM 35N
· AKM xxx-250 --> CT-AC RCM 80N
· AKM xxx-400 --> CT-AC RCM 110N
· AKM xxx-530 --> CT-AC RCM 140N
INFORMATION
For the AKMs 125/250/400/530 A there is the
option for enhanced residual current measurement
(RCMplus) according to Type A/B/B+ by means of
built-in RCM 202-AB residual current measurement
devices. This does not apply to the AKM 103!
, UMG 96-PQ-L, UMG
3.9.5
Temperature measurement
The interior temperature of the busbar tap-off unit
is measured by a PT100 temperature sensor. The
PT100 temperature sensor is installed close to the
NH fuses where the greatest heating of the AKM is
expected.
3.9.6
Power input, cover disconnector and
protection against contact
The BD2 busbar trunking system serves as the
contact device for the busbar tap-off unit, thereby
enabling power transmission and distribution to all
areas of industry.
The 125 A version of the AKM has a cover di-
sconnector to sever the connection to the power
supply. This enables shockproof working when the
enclosure is open, despite the voltage applied in
the busbar distributors.
All other AKM variants (250 A, 400 A, 350 A) are
standard enclosures from the manufacturer and
have a shockproof construction for user safety.
3.9.7
Power output
The consumer (e.g. machine) is connected to the
AKM via 5 terminals (L1, L2, L3, N and PE). 3 NH
fuses protect phases L1 to L3. The maximum
permissible fuse protection can be found on the
rating plate.
The power output on the AKM can vary, see chap-
ter „Installation and equipment options – schema-
tic diagrams" auf S. 68.
Busbar tap-off unit
63
Werbung
Kapitel
Inhaltsverzeichnis
