INSTALLATION AND
PROGRAMMING INSTRUCTIONS
SUNWAY M XS 7500TL
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When the test is inactive, the trip thresholds of the protections are fixed and set to the values required by the
standards in force:
Variable
Required value
Nominal value of the
variable (factory
setting)
Value of the trip
threshold (factory
setting)
Minimum voltage trip
threshold
0.8 * nominal grid
voltage
230 Vac
184 Vac
Maximum voltage trip
threshold
1.2 * nominal grid
voltage
230 Vac
276 Vac
Minimum frequency trip
threshold
49.7 Hz (49 Hz) (1)
50 Hz
49.7 Hz
Maximum frequency trip
threshold
50.3 Hz (51 Hz) (1)
50 Hz
50.3 Hz
Table 35: Protection trip times
(1) In some cases, the National Grid Administrator may require to change the values in brackets. If this is
the case, please contact the Customer Service of Elettronica Santerno SpA.
The protection trip times are as follows:
Variable
Time
Maximum voltage trip threshold
200 ms
(1)
Minimum voltage trip threshold
400 ms
(1)
Maximum voltage frequency threshold
100 ms
(1)
Minimum voltage frequency threshold
100 ms
(1)
Table 36: Trip times
(1) Approximate value.