Monitoring Relays
True RMS 3-Phase, Phase Sequence/Loss - Asymmetry
Types DPB02, PPB02
• TRMS 3-phase phase sequence, phase loss and
asymmetry monitoring relays
• Detect when all 3 phases are present and have the
correct sequence
• Detect if asymmetry level is below the set value
• Measure on own power supply
• Selection of measuring range by DIP-switches
• Adjustable asymmetry on relative scale
• Adjustable delay function (0.1 to 30 s)
• Output: 8 A relay SPDT N.E.
• For mounting on DIN-rail in accordance with
DIN/EN 50 022 (DPB02) or plug-in module (PPB02)
• 22.5 mm Euronorm housing (DPB02)
or 36 mm plug-in module (PPB02)
• LED indication for relay, alarm and power supply ON
DPB02
PPB02
Product Description
3-phase or 3-phase+neutral
line voltage monitoring relay
for phase sequence, phase
loss and asymmetry with
built-in time delay function.
Supply ranges from 208 to
480 VAC covered by two
multi voltage relays.
Ordering Key
Housing
Function
Type
Item number
Output
Power supply
DPB 02 C M23
Type Selection
Mounting
DIN-rail
Plug-in
Output
SPDT
SPDT
Supply: 208 to 240 VAC
DPB 02 C M23
PPB 02 C M23
Supply: 380 to 415 VAC
PPB 02 C M48
Supply: 380 to 480 VAC
DPB 02 C M48
Input Specifications
Input
L1, L2, L3, N
DPB02: Terminals L1, L2, L3, N
PPB02: Terminals 5, 6, 7, 11
Measure on own supply
Output Specifications
Output
Rated insulation voltage
Contact ratings
(AgSnO
2
)
Resistive loads
AC 1
DC 12
Small inductive loads AC 15
DC 13
Mechanical life
Electrical life
SPDT relay
250 VAC
µ
8 A @ 250 VAC
5 A @ 24 VDC
2.5 A @ 250 VAC
2.5 A @ 24 VDC
≥
30 x 10
6
operations
≥
10
5
operations
(at 8 A, 250 V, cos
ϕ
= 1)
≤
7200 operations/h
Note: Connect the neutral only
if it is intrinsically at the star
centre
Measuring ranges
208 to 240 VAC
380 to 480 VAC (DPB02CM48)
380 to 415 VAC (PPB02CM48)
Ranges
Asymmetry
177 to 275
∆VAC
323 to 550
∆VAC
323 to 475
∆VAC
2 to 22%
of the nominal voltage
Operating frequency
Dielectric strength
2 kVAC (rms)
Dielectric voltage
Rated impulse withstand volt. 4 kV (1.2/50 µs)
o
Note:
The input voltage
must not exceed the maxi-
mum rated voltage or drop
below the minumum rated
voltage reported above.
Specifications are subject to change without notice (18.07.06)
1
DPB02, PPB02
Supply Specifications
Power supply
Rated operational voltage
through terminals:
L1, L2, L3, N
(DPB02)
(PPB02)
5, 6, 7, 11
M23 - Delta Voltage:
Overvoltage cat. III
(IEC 60664, IEC 60038)
General Specifications
Power ON delay
Reaction time
Incorrect phase sequence or
total phase loss
Asymmetry
Alarm ON delay
Alarm OFF delay
Accuracy
Temperature drift
Delay ON alarm
Repeatability
Indication for
Power supply ON
Alarm ON
Output relay ON
Environment
Degree of protection
Pollution degree
Operating temperature
@ Max. voltage, 50 Hz
@ Max. voltage, 60 Hz
Storage temperature
Housing
Dimensions
DPB02
PPB02
Weight
Screw terminals
Tightening torque
Approvals
CE marking
EMC
Immunity
Emissions
1 s ± 0.5 s or 6 s ± 0.5 s
< 200 ms
< 200 ms (delay < 0.1 s)
< 200 ms (delay < 0.1 s)
(15 min warm-up time)
± 1000 ppm/°C
± 10% on set value ± 50 ms
± 0.5% on full-scale
LED, green
LED, red (flashing 2 Hz
during delay time)
LED, yellow
IP 20
3 (DPB02), 2 (PPB02)
-20 to 60°C, R.H. < 95%
-20 to 50°C, R.H. < 95%
-30 to 80°C, R.H. < 95%
22.5 x 80 x 99.5 mm
36 x 80 x 94 mm
Approx. 120 g
Max. 0.5 Nm
acc. to IEC 60947
UL, CSA
Yes
Electromagnetic Compatibility
According to EN 61000-6-2
According to EN 61000-6-3
208 to 240 VAC ± 15%
45 to 65 Hz
M48 (DIN-rail) - Delta Voltage: 380 to 480 VAC ± 15%
45 to 65 Hz
M48 (DIN-rail) - Star Voltage: 220 to 277 VAC ± 15%
45 to 65 Hz
M48 (Plug-in) - Delta Voltage: 380 to 415 VAC ± 15%
45 to 65 Hz
M48 (Plug-in) - Star Voltage: 220 to 240 VAC ± 15%
45 to 65 Hz
Rated operational power
DPB02CM23, PPB02CM23
13 VA @
∆230
VAC, 50 Hz
13 VA @
∆400
VAC, 50 Hz
DPB02CM48, PPB02CM48
Supplied by L1 and L2
Mode of Operation
Connected with the 3 phas-
es (and neutral) DPB02 and
PPB02 operate when all 3
phases are present at the
same time, the phase
sequence is correct and the
asymmetry is under the set
level.
Asymmetry is defined as fol-
lows:
max{|∆V
ph-ph
|}
nom. voltage
max{|∆V
ph-n
|}
nom. voltage
red LED flashing 5 Hz after
the alarm condition occurs.
Example 1
(mains network monitoring)
The relay monitors asymme-
try, phase loss and correct
phase sequence.
Example 2
(load monitoring)
The relay releases in case of
interruption of one or more
phases or when the asym-
metry exceeds the set level.
when measuring phase-neu-
tral voltages.
If the asymmetry exceeds
the set level the red LED
starts flashing 2 Hz and the
output relay releases after
the set time period. If the
phase sequence is incorrect
or one phase is lost, the output
relay releases immediately.
Only 200 ms delay occurs.
The failure is indicated by the
when measuring phase-
phase voltages and also as
follows:
2
Specifications are subject to change without notice (18.07.06)
DPB02, PPB02
Function/Range/Level and Time Delay Setting
Adjust the input range set-
ting the DIP switches 3 and
4 as shown below.
Select the desired function
setting the DIP switches 1
and 2 as shown below.
To access the DIP swiches
open the grey plastic cover
as shown below
Selection of asymmetry
and time delay:
Centre knob:
Setting of asymmetry on rel-
ative scale.
Power ON delay
ON: 6 s ± 0.5 s
OFF: 1 s ± 0.5 s
Monitored voltage
ON: Phase-Neutral
OFF: Phase-Phase
Measuring range
ON
ON
OFF
OFF
SW3
SW4
ON
OFF
ON
OFF
M23 Ph-Ph 208 VAC 220 VAC 230 VAC
240 VAC
Voltage
M48 Ph-Ph 380 VAC 400 VAC 415 VAC
480 VAC
Voltage
DPB02 only
M48 Ph-N 220 VAC 230 VAC 240 VAC
277 VAC
Voltage
DPB02 only
Lower knob:
Setting of delay on alarm
time on absolute scale (0.1
to 30 s).
Operation Diagrams
Specifications are subject to change without notice (18.07.06)
3
DPB02, PPB02
Wiring Diagrams
DPB02
PPB02
Dimensions
DIN-rail
22.5
Plug-in
94
99.5
36
90
83.5
80
63
28.5
80
28.5
4
Specifications are subject to change without notice (18.07.06)
63
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