|
Laatste Nieuws
Monitor Editie 2011-1
|
|
Differentieelstroombewaking |
|
 |
The AC / DC sensitive residual current monitoring
module is suitable for fault current monitoring
in transformerless photovoltaic inverters
where direct and / or alterna ting fault currents
are likely to occur the value of which is
constantly greater than zero.
|
 |
The AC and pulsed DC
sensitive residual current monitor RCM420-D (Type A)
is used for fault current respectively residual
current monitoring in earthed power supply systems
(TN and TT systems) where an alarm has to be
activated in the event of a fault, but disconnection
must be prevented. In addition, the device can be
used to monitor single conductors such as PE
conductors, N-PE connections, PE-Equipotential
bonding connections.
|
|
|
The AC / DC sensitive
residual current monitor RCMA420 is designed for
monitoring earthed power supply systems (TN and TT
systems) where DC fault currents or residual
currents continuously greater than zero may occur.
These are in particular loads containing six-pulse
rectifiers or one way rectifiers with smoothing,
such as converters, battery chargers, construction
site equipment with frequency-controlled drives.
Currents in single conductors can be monitored too.
|
|
|
The AC / DC sensitive
residual current monitor RCMA423 is designed for
monitoring earthed power supply systems (TN and TT
systems) where DC fault currents or residual
currents continuously greater than zero may occur.
These are in particular loads containing six-pulse
rectifiers or one way rectifiers with smoothing,
such as converters, battery chargers, construction
site equipment with frequency-controlled drives.
Currents in single conductors can be monitored too.
|
 |
Residual current
monitoring in earthed two, three or four-wire
systems
(TN and TT systems)
Current monitoring of
single conductors deenergized under normal
conditions
Monitoring of earthed
power supply systems for stray currents, monitoring
the load of N conductors
|
|
|
AC/DC sensitive
residual current monitoring in earthed two, three or
four-wire systems (TN and TT systems)
AC/DC sensitive
current monitoring of single conductors deenergized
under normal conditions (e.g. N and PE conductor)
Variable-speed drives,
uninterruptible power systems UPS
Batteries, computer
tomography
|
 |
The RCMS system
consists of one or several RCMS460-D/-L residual
current evaluators. In combination with the
associated measuring current transformers, the
evaluators are capable of detecting and evaluating
fault, residual and operating currents in earthed
power supply systems.
For AC / DC sensitive residual current measurement,
closed type measuring current transformers of the
W…AB series are required |
|
RCMS490-.... with relay output
for each channel |
 |
The RCMS system
consists of one or several RCMS490-D/-L
residual current evaluators. In combination with the
associated measuring current transformers, the
evaluators are capable of detecting and evaluating
fault, residual and operating currents in earthed
power supply systems.
For AC / DC sensitive residual current measurement,
closed type measuring current transformers of the
W…AB series are required |
|
W1-W5S Measuring current
tranformer |
 |
Standard Current
Transformers for use with RCM Series
|
|
W20-W210 Measuring current
tranformer |
 |
| Typ |
ø (mm) |
Art. No. |
| W20 |
20 |
B 9808 0003 |
| W35 |
35 |
B 9808 0010 |
| W60 |
60 |
B 9808 0018 |
| W120 |
120 |
B 9808 0028 |
| W210 |
210 |
B 9808 0034 |
|
|
WF…
series Measuring current
transformer |
 |
Flexible measuring current
transformers of the WF… series are highly sensitive
measuring current
transformers, which measure AC currents in
conjunction with a residual current evaluator
of the RCMS460 / 490 series and convert them
into an evaluable measuring signal.
They consist of one flexible
measuring current transformer W…F and one signal
converter RCC420. |
|
WR70x175...WR150-350s Measuring
current tranformer |
 |
Rectangular Current
Transformers for use with RCM Series
|
 |
| Type |
ø (mm) |
Art. No. |
| WR 70x175 |
70x175 |
B 98080609 |
| WR 115x305 |
115x305 |
B 98080610 |
|
 |
Measuring current
transformers of the W…AB series are measuring
current transformers which in combination with
devices of the RCMA420 resp. RCMS460 / 490 series
convert AC and DC currents into evaluable
measurement signals. Connection to the respective
devices is via a five-wire or six-wire cable. The
CTs can be used in DC, AC, and 3(N)AC systems. If
the measuring current transformers are to be
connected to an RCMS460 / 490 system, one AN420
power supply unit is required for six measuring
current transformers each |
|
WS.../WS...8000
Split-core type |
 |
Split-core type
measuring current transformers of the WS… and
WS…-8000 series can be opened using the interlock
knob to enclose the conductors to be monitored. That
allows easy retrofitting in existing installations.
Measuring current transformers of the WS… und
WS…-8000 are highly sensitive measuring current
transformers of split-core type which in combination
with residual current monitors and evaluators of the
RCM and RCMS series convert AC currents into
evaluable measurement signals.
In addition, the measuring current transformers are
suitable for use in combination with insualtion
fault location systems (EDS). |
© Bender benelux bv
|
|
