Schneider LT4706 Bruksanvisning

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Sida 1/4
W9 1636671 01 A03
02 - 2011
1/4
www.schneider-electric.com
A
LT47pp
0.5 - 6 A
Type
LT 4706
LT 4730
LT 4760
Relay setting range
3 - 30 A
5 - 60 A
Operating and Function
b LT47, solid state overload relay, compares motor
current with preset load current threshold (LOAD).
b Motor currents are monitored through two internal
current transformers.
b CT hole size is 12 mm in diameter. Please don't
allow excessive force on CTs.
b D-Time counts down and is only available for motor starting.
During steady state, if motor current is greater than current
setting(overloaded), LT47 switches its contacts after O-Time.
b For shear-pin (mechanical shock) protection, set O-Time knob
to its minimum in order to trip in 0.2-0.3 s.
DANGER
HAZARD OF ELECTRIC SHOCK,
EXPLOSION, OR ARC FLASH
Disconnect all power before servicing
equipment.
Failure to follow these instructions
will result in death or serious injury.
PLEASE NOTE:
b Electrical equipment should be installed, operated,
serviced, and maintained only by qualied personnel.
b No responsibility is assumed by Schneider Electric
for any consequences arising out of the use of this
material.
b This document is also available in French, Spanish,
Italian, German, and Chinese for download on our
website at www.schneider-electric.com.
2/4W9 1636671 01 A03
C
mm
in.
TEST/STOP
RESET
O-TIME
(s)
LOAD (A) D-TIME(s)
A1 A2 97 NO NC98 95 96
Ø 0.47
Ø 12
6 x M3.5
50.8
2.00
19.5
0.77
PULLPULL
Ø0.18
Ø4.5
51
2.01
63
2.48
56
2.20
30.4
1.20
20.4
0.80
77,2
3.04
62,2
2.45
A1 A2 97 NO NC98 95 96
B
Auto Reset type
D-Time
Load
Load
O-Time
R-Time
O-Time
A1 A2 97 NO NC98 95 96
O
O
O
O
Condition LED Signal
Green LED Red LED
Power on
Starting
Steady state
Overloading
Trip
Flickering
Combined signals from red and green LEDs indicate
motor status including trip cause.
On
On
On
On
On
Standard type (Manual / Electrical reset)
Test/Stop
Reset
Green LED
(LED OK)
Red LED
(LED OL)
Test/Stop
Reset
Green LED
(LED OK)
Red LED
(LED OL)
A1 A2 97 NO NC98 95 96
3/4W9 1636671 01 A03
D
When motor current is less than minimum current setting
(< 0.5A), looping conductors through CT holes can
be used. The following table explains number of looping
for low current setting.
L1 L2 L3
96
95
98
97
A2
A1
E------
E---
Tr.
FUSE
MCCB
M
~3
OFF
(RESET)
START
13
14
KM1
KM1
A1
A2
KM1
LT47
TEST/STOP
RESET
Straight-through-Wiring
Line
Load
Line
Load
Looping Option (1-Loop)
When putting 2 ring lug in the same terminal,
plug one after the other as shown in gure.
2
1
3
Note:
b LT47 may be inuenced by the
harmonics on the control power.
b The control power should be
supplied via the isolated transformer.
b Output: Normally energized.
No. of Loops
0
1
2
3
4
LT4706
Looping
Option
Time of Passing
1
2
3
4
5
Current Set. Range (A)
0.50 - 6.0 A
0.25 - 3.0 A
0.17 - 2.0 A
0.12 - 1.5 A
0.10 - 1.2 A

Produktspecifikationer

Varumärke: Schneider
Kategori: Inte kategoriserad
Modell: LT4706

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