SMA SCS 3800 UP - 4.4 Performing the Power-Generating Unit Protection Test

4 Power-Generating Unit Protection Test
SMA Solar Technology AG
Service Manual for InstallersSC-UP_SCS-UP_EZE-SG-en-1016
4.4 Performing the Power-Generating Unit Protection Test
Materials required for test:
☐ Three-phase testing device with the following properties:
– Trigger function for monitoring the potential-free contact
– Voltage range (depends on the power class, see operating manual) up to 759 V
AC
(line-to-line) with accuracy
better than 0.1%
– Logging function
☐ Laptop for changing the inverter parameters
☐ Data query sheet TR8
Requirements:
☐ The relevant test parameters have been saved (see Section4.3, page15).
☐ The tap changer setting on the MVtransformer complies with the specifications of the grid operator or the PV
system certificate.
☐ The parameter settings comply with the specifications of the grid operator or the PV system certificate.
Procedure:
1. Identify the measurement and disconnect terminal using the circuit diagram and reference designation.
2. Connect the outputs L1, L2 and L3 of the testing device to the
measurement inputs P1, P2 and P3 on the measurement and
disconnect terminal -X250 of the voltage measurement unit.
−X 371
−X 373
123 123
−X 372
123
−X 540 −X 440 −X 740
−X 416
12
−X 250
1 2 3 4 5
3. Connect the binary input of the testing device to the measurement inputs P4 and P5 on the measurement and
disconnect terminals of the voltage measurement unit.
4. Connect the testing device to the external voltage supply.
5. Connect the laptop to the service interface.
6. Log into the user interface as an installer.
7. Perform the power-generating unit protection test in accordance with the TR8 data request form. Set the test
parameters in accordance with the specifications of the grid operator or the PV system certificate.
• Voltage increase protection V> / t
V>
with the parameters VCtl.Hi1Lim and VCtl.Hi1LimTm
• Voltage increase protection V>> / t
V>>
with the parameters VCtl.Hi2Lim and VCtl.Hi2LimTm
• Voltage increase protection V>>> / t
V>>>
with the parameters VCtl.Hi3Lim and VCtl.Hi3LimTm
• Voltage increase protection V>>>> / t
V>>>>
with the parameters VCtl.Hi4Lim and VCtl.Hi4LimTm
• Voltage increase protection V>>>>> / t
V>>>>>
with the parameters VCtl.Hi5Lim and VCtl.Hi5LimTm
• Voltage increase protection V>>>>>> / t
V>>>>>>
with the parameters VCtl.Hi6Lim and VCtl.Hi6LimTm
• Voltage drop protection V< / t
V<
with the parameters VCtl.Lo1Lim and VCtl.Lo1LimTm
• Voltage drop protection V<< / t
V<<
with the parameters VCtl.Lo2Lim and VCtl.Lo2LimTm
• Voltage drop protection V<<< / t
V<<<
with the parameters VCtl.Lo3Lim and VCtl.Lo3LimTm
• Voltage drop protection V<<<< / t
V<<<<
with the parameters VCtl.Lo4Lim and VCtl.Lo4LimTm
• Voltage drop protection V<<<<< / t
V<<<<<
with the parameters VCtl.Lo5Lim and VCtl.Lo5LimTm