Siemens SCOR Installation, Operation & Maintenance Instructions Manual page 11

Overcurrent protective relay
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2 Controls and Indicators
Locator
Name
L
POWER indicator
M
TARGET RESET switch
N
ELEMENT targets
0
TAP scaling chart
p
FUNCTION targets
TIME
INST 1
INST 2/CLOSE
(not illustrated)
Q
PUSH TO ENERGIZEOUTPUT
12/CLS
(not illustrated)
11
n
Table 2.
Controls and Indicators (continued)
Function
Red LED that illuminates when relay power supply is functioning.
Raising this switch simultaneously resets all of the targets (locators N
and P) if relay is powered up.
Magnetically latched indicators that change from black to orange when
tripping occurs to indicate the phase (A, B, or C) or ground (N) that
caused the trip. Depending on the relay's style number, some of these
targets may not be present. Reset by Target Reset Switch (M).
Defines the settings of the TAP switches (locators A and G)
Magnetically latched indicators that change from black to orange when
a relay output has tripped. Note that the current through the associated
output contact must exceed 0.2 A to actuate the target. For reset see
M.
Depending upon the style number, some of the illustrated targets may
not be present.
Indicates that a trip was caused by a TIME overcurrent function.
INST 1 1ndicates a trip initiated by the INSTantaneous-1 function.
Only provided if Option 1-2 is selected. Indicates a trip initiated by the
INSTantaneous-2 function or, that a CLOSE contact output was initiated
by an external computer- controlled command, or that a ground trip
occurred.
Momentary pushbuttons that provide the means to test the functioning
of the output contacts without having to apply current to the sensing
inputs.
Buttons
non-conducting rod through holes in the front panel.
Closes the INSTantaneous-2 or the CLOSE output contact (depending
upon the option present).
Closes the lnstantaneous-1 output contact.
Closes the Timed Trip output contact.
are
depressed
by
inserting
Page 9
a
1 /8"
diameter

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