GE B90 UR Series, Instruction Manual

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GE Multilin B90 Low Impedance Bus Differential System 5-5
5 SETTINGS 5.2 PRODUCT SETUP
5
5.2PRODUCT SETUP 5.2.1 B90 FUNCTION
PATH: SETTINGS

PRODUCT SETUP

B90 FUNCTION
The setting acts as a B90 master switch enabling certain relay elements. For example, all features dependent on AC inputs
(such as bus differential, instantaneous overcurrent, time overcurrent, and undervoltage) become available if the
B90 FUNCTION
is set to “Protection”. Features that are not dependent on AC signals (such as logic part of the Breaker Fail-
ure protection or Isolator Monitoring) become available if the
B90 FUNCTION
is set to “Logic”.
Typically, three IEDs in the B90 system have hardware configured to support AC inputs (set
B90 FUNCTION
to “Protection”),
while the fourth IED is configured to support all required input contacts and is intended for isolator monitoring and other
logic functions (set
B90 FUNCTION
to “Logic”).
The
B90 FUNCTION
setting allows the user to work with a single setting file, program all required functions (both protection
and logic), download the same file to all the B90 IEDs, and modify the settings accordingly to finalize the application. Com-
munications and
B90 FUNCTION
settings are typically modified when downloading the common B90 setting file.
5.2.2 SECURITY
a) MAIN MENU
PATH: SETTINGS

PRODUCT SETUP

SECURITY
CyberSentry or basic security applies, depending on purchase. This section outlines password access. See the next sec-
tion and the Security chapter for information on setting up user accounts and CyberSentry security.
Two levels of password security are provided via the
ACCESS LEVEL
setting: command and setting. The factory service level
is not available and intended for factory use only.
The following operations are under command password supervision:
• Changing the state of virtual inputs
• Clearing the event records
• Clearing the oscillography records
• Changing the date and time
• Clearing the data logger
• Clearing the user-programmable pushbutton states
The following operations are under setting password supervision:
• Changing any setting
• Test mode operation
The command and setting passwords are defaulted to “0” when the relay is shipped from the factory. When a password is
set to “0”, the password security feature is disabled.

B90 FUNCTION

B90 FUNCTION:
Protection
Range: Protection, Logic

SECURITY

ACCESS LEVEL:
Restricted
Range: Restricted, Command, Setting,
Factory Service (for factory use only)
MESSAGE

CHANGE LOCAL

PASSWORDS
See page 5–6.
MESSAGE
 ACCESS

SUPERVISION
See page 5–8.
MESSAGE
 DUAL PERMISSION

SECURITY ACCESS
See page 5–8.
MESSAGE
PASSWORD ACCESS
EVENTS: Disabled
Range: Disabled, Enabled