CPS SC Series - System Protection Parameters Setup

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5.3.8 System protection parameters setup
In standby mode, press PAGEDOWN and ENTER at the same time in the
main interface and enter the password (PAGEUP -> PAGEDOWN -> RIGHT ->
LEFT), the system parameter setup menu is accessed. This menu includes 4
submenus: “1 SysPara”, “2 Restart”, “3 Recover” and “4 ClrErrRecd”, as
shown in Figure 5-18.
(1) Set up the system protection parameters in “1 SysPara” menu. The
specification of protection parameters is shown in Table 5-3.
Table 5-3(a) Protection Parameters Table for CPS SC20KTL-DO/US-480
No.
Description of parameter
Setup range (lower limit, default
& upper limit)
1
Grid line voltage upper limit
（200, 528, 533V）
2
Trip time under Max. Grid V.
(0.05, 1.80, 2.00S)
3
Grid line voltage lower limit
（0, 422, 480V）
4
Trip time under Min. Grid V.
（0.05，1.80，2.00S）
5
Grid frequency upper limit
(50.00，60.50，65.00Hz)
6
Grid frequency lower limit
(45.00，59.30，60.00Hz)
7
Trip time under Min. Grid F.
（0.05，0.16，300.00S）
8
Insulation impedance lower limit
(200，600，1200KΩ)
9*
Active power derating
（80.0%，100.0%，100.0%）
10*
Reactive power compensation
（-0.900，1.000，0.900）