Siemens SIPROTEC 4 7SD80 User Manual

The turbo regulator regulates the machine set to the nominal speed. Consequently, the station's own
demands can be continuously supplied at nominal frequency.
Since the dropout threshold is 20 MHz below or above the trip frequency, the resulting “minimum” trip
frequency is 30 MHz above or below the nominal frequency.
A frequency increase can, for example, occur due to a load shedding or malfunction of the speed regulation
(e.g. in a stand-alone system). In this way, the frequency protection can, for example, be used as overspeed
protection.
Settings
Addr. Parameter Setting Options Default Setting Comments
3601 81 O/U FREQ. f1 ON: Alarm only
ON: with Trip
OFF
ON: Alarm only 81 Over/Under Frequency Prot.
element f1
3602 81-1 PICKUP 45.50 .. 54.50 Hz 49.50 Hz 81-1 Pickup
3603 81-1 PICKUP 55.50 .. 64.50 Hz 59.50 Hz 81-1 Pickup
3604 81-1 DELAY 0.00 .. 600.00 sec 60.00 sec 81-1 Time Delay
3611 81 O/U FREQ. f2 ON: Alarm only
ON: with Trip
OFF
ON: Alarm only 81 Over/Under Frequency Prot.
element f2
3612 81-2 PICKUP 45.50 .. 54.50 Hz 49.00 Hz 81-2 Pickup
3613 81-2 PICKUP 55.50 .. 64.50 Hz 57.00 Hz 81-2 Pickup
3614 81-2 DELAY 0.00 .. 600.00 sec 30.00 sec 81-2 Time Delay
3621 81 O/U FREQ. f3 ON: Alarm only
ON: with Trip
OFF
ON: Alarm only 81 Over/Under Frequency Prot.
element f3
3622 81-3 PICKUP 45.50 .. 54.50 Hz 47.50 Hz 81-3 Pickup
3623 81-3 PICKUP 55.50 .. 64.50 Hz 59.50 Hz 81-3 Pickup
3624 81-3 DELAY 0.00 .. 600.00 sec 3.00 sec 81-3 Time delay
3631 81 O/U FREQ. f4 ON: Alarm only
ON: with Trip
OFF
ON: Alarm only 81 Over/Under Frequency Prot.
element f4
3632 81-4 PICKUP 45.50 .. 54.50 Hz 51.00 Hz 81-4 Pickup
3633 81-4 PICKUP 55.50 .. 64.50 Hz 62.00 Hz 81-4 Pickup
3634 81-4 DELAY 0.00 .. 600.00 sec 30.00 sec 81-4 Time delay
Information List
No.
Information Type of
Informa-
tion
Comments
5203 >BLOCK 81O/U SP >BLOCK 81O/U
5206 >BLOCK 81-1 SP >BLOCK 81-1
5207 >BLOCK 81-2 SP >BLOCK 81-2
5208 >BLOCK 81-3 SP >BLOCK 81-3
5209 >BLOCK 81-4 SP >BLOCK 81-4
5211 81 OFF OUT 81 OFF
5212 81 BLOCKED OUT 81 BLOCKED
5213 81 ACTIVE OUT 81 ACTIVE
2.9.3
2.9.4
Functions
2.9 Frequency Protection (optional) 81
SIPROTEC 4, 7SD80, Manual 127
E50417-G1100-C474-A2, Edition 02.2018

Siemens SIPROTEC 4 7SD80 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7SD80
Category	Power distribution unit
Language	English