9 – 6
9.1.3
Trip unit ETU748
Overview
1) The trip cause is stored internally for at least two days if the trip unit has been activated for at least 10 min before tripping
(for unlimited time with auxiliary power).
2) The switch is only accessible when the breaker front cover is removed.
NOTICE
Electrostatic Discharge
Trip unit may become inoperative.
Before the protective cover is removed, ensure that the equipment to be connected, and also the operating
personnel, are at the same potential.
Option:
Ground-fault module
Mechanical RESET
for Bell Alarm
Rating plug
Scroll up
Indicators
COMMUNICATIONS
EXTENDED
Rotary coding switch ground-fault
pickup setting
Rotary coding switch ground-fault
alarm setting
Query button
Test button
Rotary coding switch long-time delay setting
Option:
Reset Lockout
Option
: Alphanumeric display
Scroll down
Thermal memory On/Off
Neutral conductor protection On/Off
Neutral conductor overload setting
Overload trip curve mode I
2
t / I
4
t
Rotary coding switch short-time delay setting
Trip cause indicator
1)
Indications
Ground-fault alarm
Ground-fault tripped
Rotary coding switch ground-fault time
delay setting t
g
/ I
2
t
g
CLEAR button
Test connector
Trip unit error indicator
Changeover switch ground-fault detection mode
2)
prevents accidental resetting of the lockout
mechanism after a trip
Rotary coding switch long-time
delay pickup setting
Rotary coding switch short-time
delay pickup setting
Trip unit
Overcurrent alarm
activated
Sealing eyelet
and remote trip
Содержание UL 1066
Страница 43: ...6 12 7 Reset reclosing lockout 8 Charge closing spring 9 Switch ON Frame size II Frame size III 9X ...
Страница 56: ...7 5 7 2 Frame size II fused ...
Страница 58: ...7 7 ...
Страница 63: ...7 12 8 27 210 0 8 27 210 0 8 27 210 0 3 75 95 2 ...
Страница 64: ...7 13 ...
Страница 65: ...7 14 7 7 Frame size III fuse carriage ...
Страница 66: ...7 15 ...
Страница 69: ...7 18 7 9 External sensor for neutral conductor WLNCT2 ...
Страница 70: ...7 19 WLNCT3 ...
Страница 85: ...9 5 I tripping Ground fault tripping ...
Страница 231: ...15 12 Pre assembling the locking module Installing 0767 1 2 3 4 6 5 ...
Страница 232: ...15 13 1 Socket head cap screw M5 with washer and nut 7 8 Size 4 5 Nm 45 lb in ...
Страница 271: ...19 10 Function check Then Fit back front panel and side cover on the right if it was removed page 23 4 10 ...
Страница 280: ...21 2 Installing the door sealing frame Not for use with fuse carriages Catalog No Door sealing frame WLDSF 1 2 3 NOTICE ...
Страница 289: ...23 7 23 3 3 Installing arc chutes 1 2 6 5 PH 2 0043 02 3 4 5 6 For frame size III 3 PH 2 ...
Страница 298: ...23 16 6 7 8 9 5 2 1 Size 5 mm ...
Страница 333: ......