Bender LANTRAXX CMS460-D, Руководство пользователя

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15 CMS460-D_D00045_01_M_XXEN/07.2016
3. System description
In buildings and industrial installations, a fault or failure of the power supply
involves high costs. In installations which require a high fault tolerance and
good safety, an CMS460 system should constantly monitor the power supply
for undercurrent and overcurrent. In addition, the CMS460-D can carry out an
harmonics analysis for each channel.
3.1 Typical applications
 
Monitoring loads and installations for load currents in the frequency
range of 42…2000 Hz (measuring current transformers W…, WR…,
WS…, WF…, measuring range see "chapter 8.1 Technical data")
 
Monitoring of extremely dangerous currents in fire hazardous areas.
 
EMC monitoring of TN-S systems for "stray currents" and additional N-
PE connections.
 
Monitoring of N conductors for overload caused by harmonics
 
Monitoring of PE and equipotentional bonding conductors to ensure
there is no current flow.
3.2 Description of function
The currents are detected and evaluated as true r.m.s. values in the frequency
range of 42…2000 Hz. All channels are scanned simultaneously so that the
maximum scanning time for all channels is
≤
180 ms if 1 x the response value
is exceeded and
≤
30 ms if 5 x the response value is exceeded .
The latest current values of all channels are shown on the LC display in bar
graph format. If one of the two set response values is exceeded, the response
delay
t
on
begins. Once the response delay has elapsed, the common alarm re-
lays "K1/K2" switch and the alarm LEDs 1/2 light up.