Undercurrent Protection ("I< Protection" Menu); Undercurrent Protection; Voltage Protection ("Volt Protection" Menu); Undervoltage Protection - GE MiCOM P40 Agile Technical Manual

Setting
MiCOM P40 Agile P442, P444
2.12 Undercurrent protection ("I< protection" menu)
This menu contains undercurrent protection functions.
2.12.1

Undercurrent protection

The undercurrent protection included within the P442 and P444 relays consists of two
independent stages.
Two stages are included to provide both alarm and trip stages, where required. Alternatively,
different time settings may be required depending on the severity of the current dip.
Menu text
GROUP 1 – I< PROTECTION
I< mode
The protection is activated with:
– first digit = 1 activates I<1 status,
– second digit = 1 activates I<2 status.
I<1 Status
Activates or deactivates the first stage undercurrent status. The two following submenus are
visible when I<1 status is enabled.
I<1 Current Set
Pick-up setting for first stage undercurrent element.
I<1 time Delay
Setting for the first stage undercurrent time-delay.
I<2 Status
Activates or deactivates the second stage undercurrent status. The two following submenus
are visible when I<2 status is enabled.
I<2 Current Set
Pick-up setting for second stage undercurrent element.
I<2 Time Delay
Setting for the first stage undercurrent time-delay.
2.13

Voltage protection ("Volt protection" menu)

This protection menu contains undervoltage and overvoltage protection.
2.13.1

Undervoltage protection

Menu text
GROUP 1 – VOLT Protection
V< & V> MODE
Activates individually undervoltage or overvoltage threshold, according to the following
table:
V< & V> mode=
activates:
Default setting
00
Disabled
0.05
1
Disabled
0.1
2
Default setting
00000000
st
1 digit
1 1 1
V<1 V<2 V<3
function Status Status
Setting range
Min Max
00 11
Disabled / Enabled
0.08*I1 4*I1
0 100
Disabled / Enabled
0.08*I1 4*I1
0 100
Setting range
Min Max
00000000 11111111
1 1 1
V<4 V>1 V>2
Status function Status
P44x/EN ST/Hb6
(ST) 4-33
Step size
1
0.01*I1
0.01
0.01*I1
0.01
Step size
1
Last digit
1 1
V>3 V>4
Status Status