2
Specifications are subject to change without notice (17.07.06)
DPA51, DPA71
Mode of Operation
DPA51 and DPA71 monitor
their own 3-phase power
supply voltage.
The relays operate when all
the phases are present and the
phase sequence is correct.
The relays release when one
phase-phase voltage drops
below 85% of the other
phase-phase
voltages
or
when the phase sequence is
wrong.
Example 1
The relay monitors that the
power supply has the correct
phase sequence and that all
phases are present.
Example 2
The relay releases in case of
interruption of one or more
phases, provided that the
regenerated
voltage
does
not
exceed
85%
of
the
phase-phase voltage.
Operation Diagram
Reaction time
Alarm ON delay
< 100 ms
Alarm OFF delay
< 300 ms
Accuracy
(15 min warm-up time)
Temperature drift
± 1000 ppm/°C
Repeatability
± 0.5% on full scale
Indication for
Power supply ON
LED, green
Relay ON
LED, yellow
Environment
Degree of protection
IP 20
Pollution degree
3
Operating temperature
(DPA51)@ Max. voltage, 50 Hz -20 to +60°C, R.H. < 95%
(DPA51)@ Max. voltage, 60 Hz -20 to +50°C, R.H. < 95%
(DPA71)
-20 to +50°C, R.H. < 95%
Storage temperature
-30 to +80°C, R.H. < 95%
Housing
Dimensions
DPA51
17.5 x 81 x 67.2 mm
DPA71
35.5 x 81 x 67.2 mm
Material
PA66
Weight
Approx. 75 g
Screw terminals
Tightening torque
Max. 0.5 Nm
acc. to IEC 60947
Approvals
UL, CSA (DPA71 UL only)
CE Marking
Yes
EMC
Electromagnetic Compatibility
Immunity
According to EN 61000-6-2
Emission
According to EN 61000-6-3
General Specifications
Power supply
Overvoltage cat. II
Rated operational voltage
(IEC 60664, IEC 60038)
through terminals: L1, L2, L3
DPA51CM44
208 to 480 VAC ± 15%,
45 to 65 Hz
DPA71DM23
208 to 240 VAC ± 15%,
45 to 65 Hz
DPA71DM48
380 to 480 VAC ± 15%,
45 to 65 Hz
Rated operational power
DPA51
13 VA @ 400 VAC, 50 Hz
Supplied by L2 and L3
DPA71
10 VA @ 400 VAC, 50 Hz
6 VA @ 230 VAC, 50 Hz
Supplied by L2 and L3
Supply Specifications
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