Settings Of The Inadvertent Energizing Protection; Information For The Inadvertent Energizing Function - Siemens Siprotec 7UM62 Manual

Functions

2.35.2.1 Settings of the Inadvertent Energizing Protection

Addr. Setting Title
7101 INADVERT. EN.
7102 I STAGE
7103 RELEASE U1<
7104 PICK UP T U1<
7105 DROP OUT T U1<

2.35.2.2 Information for the Inadvertent Energizing Function

F.No. Alarm
05533 >BLOCK I.En.
05541 I.En. OFF
05542 I.En. BLOCKED
232
Figure 2-112 illustrates the course of events during an unwanted connection in case
of a machine standstill and, contrary to this, during a voltage collapse in case of a short
circuit close to generator terminals.
U <
1
Release of
INADV. EN.
T U1<
Dropout
I >
L
Trip
Machine
"stopped"
Inadvertent
energization
a) Trip after inadvertent energization
Figure 2-112 Course of Events of the Inadvertent Energizing Protection
The following list indicates the setting ranges and the default settings of a I
secondary nominal current. For a secondary nominal current of I
must be multiplied by 5.
Setting Options
OFF
ON
Block relay for trip com-
mands
0.1..20.0 A; ∞
10.0..125.0 V; 0
0.00..60.00 sec; ∞
0.00..60.00 sec; ∞
>BLOCK inadvertent energ. prot.
Inadvert. Energ. prot. is swiched OFF
Inadvert. Energ. prot. is BLOCKED
T U1<
Pickup
Machine
"running"
Short circ.
close to gen.
b) Unit connection
Default Setting
OFF Inadvertent Energisation
0.3 A I Stage Pickup
50.0 V Release Threshold U1<
5.00 sec Pickup Time Delay T U1<
1.00 sec Drop Out Time Delay T U1<
Comments
Start T U1
Pickup
Trip
short-circuit
protection
= 1 A
N
= 5 A, these values
N
Comments
7UM62 Manual
C53000-G1176-C149-3