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PDF 3UA6230 Data sheet ( Hoja de datos )
| Número de pieza | 3UA6230 | |
| Descripción | Relays | |
| Fabricantes | Siemens | |
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I
Operating Instructions
C.T. Operated Bimetal Relay with
single phasing protection feature
Type 3UA62 30
Warning:
Hazardous Voltage can cause
Electric Shock and burns.
Disconnect Power before proceeding
with any work on this equipment
Table 1
Type
Min
Setting
AMP
3UA62 30
85
115
160
200
250
Max.
Setting
AMP
135
180
250
320
400
Fuse rating
type 3NA1
AMP
224
250
355
400
500
Load current corresponding
to marking
0.625/0.63 0.7 0.8
AMP
0.9
1.0
85 94.5 108 121.5 135
115 126 144 162 180
160 175 200 225 250
200 224 256 288 320
250 280 320 360 400
The Siemens 3UA62 30 current
transformer operated bi-relays provide
accurate overload and accelerated
single phasing protection for three
phase motors having rated currents
upto 400A.
3UA62 30 comprise of current
transformer and a bimetallic tripping
unit. The tripping unit makes use
ofdual slider principal for faster
tripping under single phasing.
Technical Data
Rated insulation
voltage
Ambient
temperature
compensation
: 1000V AC for
main circuit
: -25oC to + 55oC
Rated operating : Ranges upto
current
400A.
Frequency of
operation
: 15 operations
per hour.
Selection (Setting Ranges)
Bi-relay are available in 5 different
ranges. The minimum and maximum
setting of each range is listed in table 1.
Short Circuit Protection
The bi-relay have to be protected from
short circuits. It is mandatory to use
back up HRC fuses. The maximum
permissible ratings of Siemens fuses as
per IS: 13947 pt-4 (Type 3NA1)
corresponding to type 2 co-ordination
for each relay range are listed in table
1. Maximum back-up fuse rating for
auxiliary circuit : 6 Amps.
Operating Instructions/Setting
Set scale so that ratio corresponds to
the rated load current.
Example :
Relay range selected
Load current
Maximum setting
: 115-180A
: 162A
: 180A
Ratio : Load Current
Max. Setting
:
162
180
= 0.9
i.e. scale on tripping unit should be set
at 0.9 marking. Refer table 1 for further
details.
Installation
Bi-relays are independent mounting
Fig. 2
Fig. 1
type. Permitted mounting position is as
shown in fig. 1. Care should be taken to
avoid shocks and prolonged vibrations.
Bi-relays are suitable for screw
mounting on flat vertical surface. Use 2
nos M5 screw with plain and spring
washers.
Maximum tightening torque = 6.2 Nm.
Refer fig. 2 for dimensions.
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet 3UA6230.PDF ] | |
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