GE Multilin 850, Instruction Manual

Page: 171 / 664

CHAPTER 5: DEVICE, SYSTEM, INPUT AND OUTPUT SETPOINTS DEVICE
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 5–9
• All the roles, except for the Observer role, support only one session at one time.
• The Observer role has read-only access to all values in the relay except for one service
command which is described in the Password Recovery Procedure section.
• All the roles, except for the Observer, have access to a “log out” setting, which has the
effect of switching to Observer role.
• A Setpoint access setting for bypassing security is available. If this feature is used, the
user gains total access to any operations / configuration changes executed either
from the front panel or from EnerVista.
• The setpoint access setting may be either switched directly on or assigned to a digital
input.
• If the setpoint access setting is assigned to a digital input, the digital input needs to be
activated through a physical key (jumper).
• The setpoint access setting may be set only by an Administrator.
PASSWORD COMPLEXITY
The password complexity is available on both Basic Security and CyberSentry.
If password complexity is enabled, a user account requires an alpha-numeric password
that meets the following requirements:
•
Passwords cannot contain the user account name or parts of the user's full name that
exceed two consecutive characters
• Passwords must be 6 to 20 characters in length
• Passwords must contain characters from three of the following four categories:
- English uppercase characters (A through Z)
- English lowercase characters (a through z)
- Base 10 digits (0 through 9)
- Non-alphabetic characters (for example, ~, !, @, #, $,%, &)
PASSWORD RECOVERY PROCEDURE
In the event of losing all passwords, the 850 can be reset to factory defaults by following
the procedure below:
1.
Send an email to the customer support department providing a valid serial number
and using a recognizable corporate email account. (Worldwide e-mail:
multilin.tech@ge.com )
2. Customer support provides the code to reset the relay to factory defaults.
3. Enter the code provided from the front panel, under the menu Setpoints > Device >
Installation > Service Command
to reset the relay to factory defaults.
NOTE
NOTE:
Note that even an Observer may execute this operation.
NOTE
NOTE:
• The current limitation for the maximum number of Observer sessions from EnerVista is
three when the Communications card is present.
• When the communications card is not present, a maximum of two Observer sessions
may be initiated through EnerVista. If two Observers are connected, a third
connection is only allowed for an Administrator. No Operator has access. However, if
an Operator is first connected, before any other user, only one Observer is allowed
and not two, so that an Administrator may always be able to connect. This is because
the maximum number of TCP connections from EnerVista, when the Communications
card is not present, is only three. (With a Communications card, the maximum number
of TCP connections is five.)