Breaker Control; Control Mode Selection And Monitoring; Faceplate (User Key) Control; Control Of Two Breakers - GE T60 Instruction Manual

4.3 FACEPLATE INTERFACE
When entering an IP address on the front panel, key in the first sequence of the number, then press the • key for the deci-
mal place. For example, for 127.0.0.1, press 127, then •, then 0, then •, then 0, then •, then 1. To save the address, press
the ENTER key.
a) INTRODUCTION
The T60 can interface with associated circuit breakers. In many cases the application monitors the state of the breaker, that
can be presented on faceplate LEDs, along with a breaker trouble indication. Breaker operations can be manually initiated
from faceplate keypad or automatically initiated from a FlexLogic operand. A setting is provided to assign names to each
breaker; this user-assigned name is used for the display of related flash messages. These features are provided for two
breakers; the user can use only those portions of the design relevant to a single breaker, which must be breaker 1.
For the following discussion it is assumed the
setting is "Enabled" for each breaker.
FUNCTION
b) CONTROL MODE SELECTION AND MONITORING
Installations can require that a breaker is operated in the three-pole only mode (3-pole), or in the one and three-pole (1-
pole) mode, selected by setting. If the mode is selected as three-pole, a single input tracks the breaker open or closed posi-
4
tion. If the mode is selected as one-pole, all three breaker pole states must be input to the relay. These inputs must be in
agreement to indicate the position of the breaker.
For the following discussion it is assumed the
1(2) PUSH BUTTON CONTROL
c) FACEPLATE (USER KEY) CONTROL
After the 30 minute interval during which command functions are permitted after a correct command password, the user
cannot open or close a breaker via the keypad. The following discussions begin from the not-permitted state.
d) CONTROL OF TWO BREAKERS
For the following example setup, the (Name) field represents the user-programmed variable name.
For this application (setup shown below), the relay is connected and programmed for both breaker 1 and breaker 2. The
USER 1 key performs the selection of which breaker is to be operated by the USER 2 and USER 3 keys. The USER 2 key
is used to manually close the breaker and the USER 3 key is used to manually open the breaker.
4-24
SETTINGS

SETTINGS
setting is "Enabled" for each breaker.
T60 Transformer Protection System
 
SYSTEM SETUP BREAKERS

SYSTEM SETUP BREAKERS
4 HUMAN INTERFACES

4.3.6 BREAKER CONTROL

 
BREAKER 1(2) BREAKER
 
BREAKER 1(2) BREAKER
GE Multilin