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Overload Relay with Phase-Failure Sensivity
Instructions
WARNING:
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK
AND BURNS.
DISCONNECT POWER BEFORE PROCEEDING
WITH ANY WORK ON THIS EQUIPMENT.
Installation
(dimensions in mm):
Dimension drawings
a
3UA60: for individual mounting with assembly kit 3UX14 24
b
3UA60: for mounting on contactor 3TB50, 3TF50
c
3UA61: for mounting on contactor 3TF51
d
3UA62: for individual mounting and mounting on contactor 3TB50
e
mounting on contactor 3TB50, 3TF50
f
3UA62: mounting on contactor 3TB52, 3TF52
g
mounting on contactor 3TB52, 3TF52
1)
Minimum distance from earthed components
Can be fitted to contactor:
a
Width of connection angle
b
Direct fitting
c
For linking 3TB52/3TF52 in setting ranges 135 to 160 A and 150 to
180 A use flexible connectors 3UX12 21 for thermal isolation.
3UA60: Mounting on contactors 3TB50, 3TF50;
Individual mounting possible with assembly kit 3UX14 24
3UA61: Mounting on contactors 3TF51 and individual mounting possible
3UA62: Mounting on contactors 3TB50, 3TB52, 3TF52 and individual
mounting possible
Permissible installed positions:
a
Overload relay with contactor
b
Overload relay for individual mounting
Do not subject to sudden shocks or long-term vibrations.
Snap-on mounting on a standard EN 50 022 rail (35 mm), or bolting on a
plane surface by two bolts to be secured by washers and spring washers.
Connection
Permissible cable cross-sections:
1)
with box terminal
3UA60
2)
without box terminal
3UA60
Equipment circuit diagram:
In the case of several single-phase loads, the three main circuits must be
connected in series.
Commissioning
Instructions:
¿
Set the scale to the rated current of load.
À
Reset button (blue)
Push this button before commissioning and after tripping to make relay
ready for operation.
In the as-delivered condition, the auxiliary contact is set to H = Manual
resetting.
To change from H = Manual to A = Automatic, press and turn the button
counter-clockwise from H to A.
Á
Test button (red)
When this button is actuated, the NC contact opens and the NO contact
closes.
In the „Manual" position, the relay is reset when the blue button is
pressed.
In the „Automatic" position, the relay is reset automatically when the
red button is released.
Â
TRIPPED indication (green)
In the H setting, a green pin protrudes from the front plate to indicate
the TRIPPED condition. In the A setting, this condition is not indicated.
2
Fig. I
Fig. II
Fig. III
Fig. IV
Fig. Va
Fig. Vb
Fig. VI
Fig. VII
DIN VDE 0660 Part 102, IEC 60947-4
Order No.: 3ZX1012-0UA60-1AA1
Tripping characteristics:
The characteristics conform to VDE 0165, VDE 0170/0171 for machines with
type of protection E Ex e. Tripping times are shown for a three-phase load
from the cold state (ambient temperature +20 °C). In the case of hot relays,
preloaded with 1 x I
, the tripping times decrease by approx. 25 %.
E
I
Current setting
E
t
Tripping time in seconds (+ 20 %)
A
¿
Setting range
(I = lowest value of current setting I
II = highest value of current setting I
À
Type designation/Order No.
Á
PTB (Federal testing Laboratories) Test Report No.
Technical data
Main circuit
Rated insulation voltage
Rated operational current
Permissible ambient air temperature
Degree of protection
Short-circuit protection
Auxiliary circuit
Rated operational currents
AC-15/U
V
24
60
e
AC-15/I
A
2
1.5
e
DC-13/U
V
24
60
e
DC-13/I
A
2
0.5
e
Short-circuit protection:
NH, NEOZED or DIAZED fuses
Miniature circuit-breaker
Rated insulation voltage
400 V
differing potential
Operating conditions at ambient temperatures > 55 °C
At ambient temperatures > 55 °C, you must
1. Reduce the current loading for the overload relay
2. Upwardly correct the setting current to prevent tripping at motor rated
current.
Correction factors:
Ambient
Perm. current loading referred
temperature
to end-of-scale value
55 °C
60 °C
65 °C
70 °C
Example:
Motor rated current: 60 A
Ambient temperature: 70 °C
Overload relay fitted: 55 to 80 A
1. Determine the permissible current loading:
Max. current loading: 80 A x 0.82 = 65.6 A
Loading with motor rated current 60 A at 70 °C ambient temperature is
permissible.
2. Calculate the setting current:
Motor rated current: 60 A
Setting current correction: 60 A x 1.1 = 66 A
You must set the overload relay to 66 A.
For further information and accessories, see Catalog.
3UA60
3UA61
3UA62
English
Fig. VIII
,
E
)
E
1000 V
55 to 180 A
-25 °C to +55 °C
IP 20 (IEC 60529)
see nameplate
125
230
400
500
1.25
1.15
1.1
1
110
220
0.3
0.2
6 A gG or 10 A, fast
3 A (C-characteristic)
690 V
same potential
Setting current
correction
1
1
0.94
1.08
0.88
1.09
0.82
1.1
690
0.8
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