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Asymmetry relay SAD142 electronic measuring relay
indicates voltage asymmetry
no additional supply voltage required
impulse voltage and electrical disturbance
alarm relay with two change-over contacts
built-in power on LED and alarm LED
continuously adjustable alarm points
compact 45 mm casing
Dimension diagram
Function
When the difference between the line conductor voltages
(asymmetry) exceeds the adjusted response value "Y", the
alarm relay K1 drops out and the red alarm LED signals "%
UVW>Y".
Symmetrical change of all lines is not indicated as long as the
change is within the operating range. Below the operating range
the relay K1 releases.
45
110
70
Mounting onto support rail
acc. to DIN EN 50 022
90
80
15,6
ø 4,5
mounting plate
for screw mounting
Response
value Y
Hysteresis Hy U (%)
U
N
1
0
1
0
1
0
Power on LED
Alarm LED
K1
11
12
14
15%
10%
5%
15 20 30
50
100
200 300
500
1000
2000
Y
[ms]
A1
B1
A2
B2
Delay on response
A1 =
Changing from U
N
to 0V (1 or 2 lines)
A2 =
Changing from U
N
to 1,1 x Y (1 or 2 lines)
Off delay
B1 =
Changing from 0V to U
N
(3 lines)
B2 =
Changing from 0V to U
N
(1 line)
U
N
= system voltage
K1 = alarm relay
Delay on response and on release
Dimensions in mm
Asymmetry relay
SAD142
3 AC Systems
O
N
% UVW>Y
SAD142
asym. relay
5
15
Y (%)
U
V
W
W
U
V
ON
V
MONITOR
Quality System
Certified
I S O 9 0 0 1 Technical Data SAD 142
Insulation coordination acc. to IEC 664-1:
Rated insulation voltage
AC 440 V
Rated impulse withstand voltage/
contamination level
4 kV/3
Dielectric test acc. to IEC 255
2,5 kV
System being monitored
Nominal voltage of the system U
N
3/N/AC 50...60 Hz
440 V, 400 V, 230 V oder 110 V
Operating range of U
N
0.7 ... 1.15 x U
N
Supply voltage
Supplied by the system being monitored
Max. power consumption
2.5 VA
Response values
Response value (adjustable) 5 ... 15 %
Repeat accuracy
2 %
Influence of ambient temperature
< 0.05 % /
°
C
Influence of frequency
< 0.1 % / Hz
Switching hysteresis
ca. 3 %
Contact circuit
Switching components
2 change over contacts
Contact class acc. to DIN IEC 255 Teil 0-20
IIB
Rated contact voltage
AC 250 V/DC 300 V
Admissible number of operations
12000 cycles
Limited making capacity
UC 5 A
Limited breaking capacity
at AC 230 V and cos phi = 0.4
AC 2 A
at DC 220 V and L/R = 0.04 s
DC 0.2 A
Operating principle
N/C operation
Type tests
Test of the Electromagnetic Compatibility (EMC):
Immunity against electromagnetic
Interferences acc. prEN 50082-2:
Impulse voltage and electrical disturbance test acc. to IEC 255:
Impulse voltage test acc. to IEC 255-5
class III
Electrical disturbance test acc. to IEC 255-5
class III
Emissions acc. to EN 50081-2:
Emissions acc. to EN 55011/CISPR11
class B
1)
Mechanical tests:
Shock resistance acc. to IEC 68-2-27
15 g/11 ms
Bumping acc. to IEC 68-2-29
40 g/6 ms
Vibration strength acc. to IEC 68-2-6
10 ... 150 Hz/0.15 mm - 2 g
Environmental conditions
Ambient temperature, during operation
-15
°
C ...+50
°
C
Storage temperature range
-20
°
C ... +70
°
C
Climatic class acc. to IEC 721
3K5, except condensation and
formation of ice
General data
Operation class
continuous operation
Mounting position
any position
Type of connection
terminals with self-lifting clamp-washers
Wire cross section
single wire
2 x (1...1.5 mm
2
)
fine braid
2 x (0.75...1,5 mm
2
)
DIN rail
acc. to DIN EN 50 022
or screw mounting
Protection class acc. to EN 60529
Internal components
IP 50
Terminals/with terminal covers
IP10/IP 20
Type of casing
X140
Flammability class
UL94V-0
Weight approx.
300 g
power On LED
alarm LED
adjustable response value
% UVW>Y
SAD142
asym. relay
5
15
Y (%)
U
V
W
W
U
V
alarm relay
11
14
12
21
24
22
U
L1
L2
L3
N
W
V
Fuse 6A
Type
Rated system voltage U
N
Art. No.
3 AC 110 V
935 508
3 AC 230 V
935 164
3 AC 400 V
935 125
3 AC 440 V
935 646
Other values on request
Type
Art. No.
Mounting plate
300 102
SAD142
Safety instructions
Please check for correct mains voltage !
Electrical equipment shall only be installed by qualified personnel
in consideration of the current safety regulations.
For short-circuit protection, the network coupling has to be
equipped with a protective device according to IEC 364-4-473
(A fuse of 6 A is recommended).
Supplementary to this data sheet you will find enclosed "important
safety instructions on the proper use of BENDER products."
Wiring diagram
1)
Class B devices are suitable for household and industrial use.
Ordering details for screw mounting
Ordering details
BENDER
Industrial Products
700 Fox Chase, Coatesville, PA 19320
Tel. (800) 356-4266 - Fax. (610) 383-7100
www.benderrelay.com