ABB Relion RES670, Technical Manual

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The function, when activated, will still allow the following changes of the IED state
that does not involve reconfiguring of the IED:
• Monitoring
• Reading events
• Resetting events
• Reading disturbance data
• Clear disturbances
• Reset LEDs
• Reset counters and other runtime component states
• Control operations
• Set system time
• Enter and exit from test mode
• Change of active setting group
The binary input signal LOCK controlling the function is defined in ACT or SMT:
Binary input Function
1 Activated
0 Deactivated
21.7 Denial of service DOS
21.7.1 Functionality
GUID-407250CA-0076-41E1-AD2D-434077AC3F1D v5
The Denial of service functionality limits overload on the IED produced by heavy
Ethernet network traffic. The communication facilities must not be allowed to
compromise the primary functionality of the device. All inbound network traffic will
be quota controlled so that too heavy network loads can be controlled. Heavy network
load might for instance be the result of malfunctioning equipment connected to the
network.
21.7.2 Operation principle
GUID-94340D4F-4D32-409B-BA1A-BA49A0C3F297 v5
The denial of service protection is designed to protect the IED from overload when
exposed to high amount of Ethernet network traffic. The communication facilities must
not be allowed to compromise the primary functionality of the device. All inbound
network traffic is quota controlled, so that a too heavy network load can be controlled.
Heavy network load might for instance be the result of malfunctioning equipment
connected to the network.
1MRK 511 408-UUS A
Section 21
Security
Phasor measurement unit RES670 2.2 ANSI 759
Technical manual