SMA SC 500CP-US-10 600V - Manual (Page 73)

SMA America, LLC 9 Grid Monitoring
Operating Manual SCCP-US-BE-US_en-52 73
Figure 35: Parameters for monitoring the line voltage
For the setting ranges of the voltage limiting values, see Section 13.1.2.
Procedure:
1. Log in to the user interface.
2. Enter the installer password in the appropriate field on the homepage and confirm with [Login].
3. If necessary, change the limiting value of the undervoltage in the parameter VCtlllLim (see Section 6.2, page 51).
4. If necessary, change the limiting value of the overvoltage in the parameter VCtlhhLim (see Section 6.2, page 51).
5. End the entering of parameters with [Save].
9.3 Monitoring the Power Frequency
For the power frequency monitoring, two limiting values are defined for the minimum power frequency and one limiting
value is defined for the maximum power frequency in accordance with IEEE 1547. Do not operate using a different
parameter value unless directed by the utility.
Parameter Explanation Default 60 Hz value
[50 Hz value]
VCtlllLim The second threshold of the undervoltage 50%
VCtlllLimTm Time period for the second limiting value for undervoltage 160 ms [200 ms]
VCtllLim The first threshold of the undervoltage 88%
VCtllLimTm Time period for the first limiting value for undervoltage 2,000 ms
VCtlhLim The first threshold of the overvoltage 110%
VCtlhLimTm Time period for the first limiting value for overvoltage 1,000 ms
VCtlhhLim The second threshold of the overvoltage 120%
VCtlhhLimTm Time period for the second limiting value for overvoltage 160 ms [200 ms]