V[1] . V<
[Protection Para / Set 1…4 / V-Prot / V[1]]
• Set 1: 0.80 Vn
• Set 2: 0.80 Vn
• Set 3: 0.80 Vn
• Set 4: 0.80 Vn
If the pickup value is exceeded, the module is started.
The definition of Vn is dependent on both the Field
Parameter »VT con« and the Setting Group
Parameter »Measuring Mode«:
If the measuring inputs of the voltage measuring card
are fed with phase-to-ground voltages (»VT con« =
“Phase to Ground”) then »Measuring Mode« = “Phase
to Ground” means that Vn = VT sec / √3̅,
and »Measuring Mode« = “Phase to Phase” means that
Vn = VT sec.
However, if the measuring inputs of the voltage
measuring card are fed with phase-to-phase voltages
(»VT con« = “Phase to Phase”) then the setting of
"Measuring Mode" is ignored and internally set to
“Phase to Phase” instead, so that Vn = VT sec.
Set to the required threshold by default, but can be
modified by qualified users.
For the password-protection (of access level “P.2”), see
the “Security” chapter in the generic MRU4 User
Manual.
P.2
V[1] . t
[Protection Para / Set 1…4 / V-Prot / V[1]]
• Set 1: 2.5 s
• Set 2: 2.5 s
• Set 3: 2.5 s
• Set 4: 2.5 s
Tripping delay: Set to the required value by default,
but can be modified by qualified users.
For the password-protection (of access level “P.2”), see
the “Security” chapter in the generic MRU4 User
Manual.
P.2
7
MRU4
MRU4-3.6-EN-G99
2 G99-Specific Protection Settings
2.1.1 V[1]: Voltage Protection Pre-Configured According to the LV Requirements
