AEG ME09 Installation, Operation And Maintenance Manual page 45

2.2.3.2.1 STDB
Mpro S N
2.5 STDB
Table 2.5 : Short Time tripping mes at indicated levels per selected STDB band -I²t OFF. in ms (2)
x Ir Min 2
90 100
1.5 x ± 10%
30 40
90 100
12 x ± 10%
30 40
2.2.3.3 (I)
2.6：HSIOC
(rm s)
HSIOC
ME 50M...ME 64M
I²
3 4 5 6
110 120 170 190 240
50 60 110 130 180
110 120 170 190 240
50 60 110 130 180
100.000 A
2.2.3.2.1 Short Time Delay STDB
(Delay on delayed Short Circuit Protec on)
The Mpro S & N trip unit types o er a Short Time Delay func on
with both a slope se ng and a xed delay band se ng. The
slope and delay are independently selectable. The slope se ng
consists of three I²t slopes (1, 2, 3) and a xed delay. The xed
delay bands have17 constant me bands.
The minimum and maximum delay mes are indicated in table
2.5.
The bands of both the slope and xed delay types are depicted
as Time Current Diagram in appendix 6.1 of this Applica on
manual.
－ I²t (²)
7 8 9 10 11
270 300 340 400
210 240 280 340
270 300 340 400
210 240 280 340
2.2.3.3 Selec ve Instantaneous Protec on (I)
Installed in the Trip Units types Mpro S and Mpro N the third
SETUP mode display is the adjustable Selec ve Instantaneous
over current protec on.
This device causes an undelayed breaker trip when the chosen
current level (Ii) and proper waveform is reached. The pickup
value may be set in steps of 0.5 x the set user current value Ie
from 2.0 xIe to 15 xIe.
(limited to a maximum 13 x Ie on the 6400Atype). The
Instantaneous pickup accuracy is 10%. The Mpro S and Mpro N
trip units have a user-selectable switchable instantaneous over
current , an addi onal value of OFF appears at the end of the
lis ng of numerical values. Choose this se ng to disable
instantaneous protec on.
The bands are depicted as Time Current Diagram
in appendix 6.1 of this Applica on manual.
Ta ble 2.6: HSIOC devices
Overview of insta lled
HSIOC devices in
Autom a tic ty pes:
Envelope 3
ME 50M...ME 64M
TRIP UNIT
12 13 14 15 16
450 600 700 800 900
390 540 640 740 840
450 600 700 800 900
390 540 640 740 840
Set va lues (rms)
100.000 A
2.
2
Max
1000
940
1000
940
2.2-03