ABB CSU-2LV, Руководство по установке и обслуживанию, Страница: 28 / 84

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ABB
ARC GUARD SYSTEM™ – CSU-2LV/2MV INSTALLATION AND MAINTENANCE GUIDE
Figure 14
Test setup for CSU-2 current measurement
1SFC170020M0201
CSU-2
4x shielded cables terminated
with RJ45 connectors
Testing sensor cable
Tester
Analogue signal:
4 x I (361 mV CSU-2LV
1.852 V CSU-2MV
for 50 Hz system)
Figure 15
Testing sensor cable for CSU-2
1SFC170020M0201
Ethernet cables terminated with RJ45 connectors
x2 x2
Testing sensor cable
1
2
To signal
generator
To CSU-2
(–)
(+)
1 2 3 4 5 6 7 8
x4
3
4 5
4.3.2 Controlling
INFORMATION
Do the test after installation and before the
CSU-2 is used!
This test is done for each installed current
sensor and the CSU-2. The test will check that
the current sensor reacts to current and the
HMI will display a notification window showing
which current sensor that detected high
current. The TVOC-2 or CSU-2 that is connected
to the outputs will react on this CSU-2 signaling
high current. The over current relay K1 will also
be energized upon detection of high current.
Testing the installation
Connect CSU-2 to secondary testing equipment to
measure the current of current sensor inputs. See
Figure 14
. Do the following steps to check the current
measurement:
1. Prepare 4x shielded cables terminated with RJ45
connectors. See
Figure 15 .
2. Connect the RJ45 connectors to current sensor
inputs, L1, L2, L3, N.
3. For each testing the testing sensor cable, wire 5
should go to plus (+) on the tester. Wire 4 should
go to common (-/GND) on the tester. Wire 1, 2, 3, 6,
7 and 8 should not be connected to any. See
Figure
15 .
4. Configure all four current sensor inputs, L1, L2, L3,
N, and navigate to Main / Settings / Parameters /
Inputs. Select “L1 L2 L3 Neutral”.
5. Run analogue signals and compare the current
signals with readings (Main / Reading) for each
current sensor input.
CSU-2LV: Input of 361 mV RMS 50 Hz corresponds
to 1 kA.
CSU-2MV: Input of 1.852 V RMS 50 Hz corresponds
to 1 kA.
Readings from HMI should be close to the current
level from the tester.
6. If an over current is detected correctly and causes
a trip then it should show on the HMI display as a
notification window, if auto reset is not configured.
7. The notification window shows the information:
• Over current has occurred
• which current sensor input
• at what time and date.
8. The TVOC-2 and/or CSU-2 that are connected to the
CSU-2 should react and show that over current is
detected.
9. At the notification window, If manual reset is
configured, press Reset. If auto reset is configured,
the notification window disappears by itself.
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