ETC2 DUA52C748 Monitoring relays dc under voltage Datasheet

Monitoring Relays
DC Under Voltage
Type DUA52
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DC undervoltage monitoring relay
Measuring if power supply is below the set level
Measures on own power supply
Measuring ranges: 8 - 28 V DC and 38 - 58 V DC
Adjustable hysteresis: 4 to 50%
Output: 5 A SPDT NE relay
For mounting on DIN-rail in accordance with
DIN/EN 50 022
• 17.5 mm housing (DIN 43880)
• LED indication for relay and power supply ON
Product Description
Ordering Key
DUA52 is a voltage monitoring relay that measure its own
power supply. The measuring
ranges are 8-28 VDC and 3858 VDC. It has separate
potentiometers for setpoint
Housing
Function
Type
Item number
Output
Power supply
and hysteresis. Typical applications are monitoring of
backup batteries, batteries on
diesel generator sets and the
like.
DUA 52 C 724
Type Selection
Mounting
Output
Measuring range
Supply : 12/24 VDC
DIN-rail
DIN-rail
SPDT
SPDT
8 to 28 VDC
38 to 58 VDC
DUA 52 C 724
Supply: 48 VDC
DUA 52 C 748
Input Specifications
Output Specifications
Input (voltage level)
Output
Rated insulation voltage
Contact ratings (AgSnO2)
Resistive loads
AC 1
DC 12
Small inductive loads AC 15
DC 13
Mechanical life
Electrical life
Measuring ranges
Direct
48 VDC
12 to 24 VDC
Terminals A1, A2
Measures on own power
supply
Level
38 to 58 VDC
8 to 28 VDC
SPDT relay
250 VAC
µ
5 A @ 250 VAC
5 A @ 24 VDC
2.5 A @ 250 VAC
2.5 A @ 24 VDC
≥ 30 x 106 operations
≥ 105 operations
(at 8 A, 250 V, cos ϕ = 1)
≤ 7200 operations/h
Operating frequency
Dielectric strength
Dielectric voltage
2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 µs)
Supply Specifications
Power supply
Rated operational voltage
through terminals:
724
A1 and A2
748
Dielectric voltage
Dielectric voltage
Supply to output
Rated operational power
Overvoltage cat. III
(IEC 60664, IEC 60038)
8 to 28 VDC
38 to 58 VDC
None
2 kV
1.5 W
Specifications are subject to change without notice (09.10.06)
1
DUA52
General Specifications
Power ON delay
Reaction time
Alarm ON delay
Alarm OFF delay
Accuracy
Temperature drift
Alarm delay
Repeatability
Indication for
Power supply ON
Output relay ON
< 200 ms
(input signal variation from
-20% to +20% or from
+20% to -20% of set value)
< 200 ms
< 200 ms
(15 min warm-up time)
± 1000 ppm/°C
± 10% on set value ± 50 ms
± 0.5% on full-scale
LED, green
LED, yellow
Approvals
CE Marking
The output is energized
when the measured voltage
IP 20
3
-20 to 60°C, R.H. < 95%
-30 to 80°C, R.H. < 95%
17.5 x 81 x 67.2 mm
PA 66
Approx. 75 g
Max. 0.5 Nm
acc. to IEC 60947
UL, CSA
Yes
Range and Level Setting
Mode of Operation
DUA52 monitors the DC value of its own power supply.
Environment
Degree of protection
Pollution degree
Operating temperature
Storage temperature
Housing
Dimensions
Material
Weight
Screw terminals
Tightening torque
is rising above the setpoint
plus hysteresis, and is deenergized when the measured
voltage drops below the setpoint value.
Operation Diagram
Selection of level:
Centre knob:
Setting of level on absolute
scale.
Lower knob:
Setting of hysteresis on relative scale
Wiring Diagram
Hysteresis
Setpoint
Relay ON
Dimensions
17.5
67.2
45
2
81
18.7
2
Specifications are subject to change without notice (09.10.06)
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