Trip By External Devices - Toshiba GRT100 Series Instruction Manual

Transformer protection relay
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2.9 Trip by External Devices

Up to four binary signals MECANICAL TRIP1 to MECANICAL TRIP4 can be used for tripping
external devices. Figure 2.9.1 shows the scheme logic for the signal MECANICAL TRIP1. The
signal can trip up to five breakers. Any of the tripping signals MECHANICAL TRIP1-1 to
MECHANICAL TRIP1-5 can be blocked by the scheme switches [M.T1-1] to [M.T1-5] setting.
Other binary signals have the same scheme logic.
MECHANICAL TRIP1
Setting
The following shows the setting elements for tripping by external devices and their setting
ranges.
Element
Scheme switch
M.T1-1 to -5
M.T2-1 to -5
M.T3-1 to -5
M.T4-1 to -5
(*) :
[M.T1-1]
"ON"
[M.T1-2]
"ON"
[M.T1-3]
"ON"
[M.T1-4]
"ON"
[M.T1-5]
"ON"
Figure 2.9.1
Scheme Logic of Trip by External Device
Range
Off/On
Default settings are dependent on the models. See Appendix H.
 36 
&
&
&
&
&
Step
Default
Remarks
Enable or disable tripping
(*)
6 F 2 S 0 7 8 9
MECHANICAL TRIP1-1
MECHANICAL TRIP1-2
MECHANICAL TRIP1-3
MECHANICAL TRIP1-4
MECHANICAL TRIP1-5

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