Monitoring Relays
3-Phase, Phase Sequence/Loss - Asymmetry
Types DPB02, PPB02
DPB02
PPB02
• 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
Product Description
Ordering Key
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.
Housing
Function
Type
Item number
Output
Power supply
Mounting
Output
Supply: 208 to 240 VAC
Supply: 380 to 480 VAC
DIN-rail
Plug-in
SPDT
SPDT
DPB 02 C M23
PPB 02 C M23
DPB 02 C M48
PPB 02 C M48
DPB 02 C M23
Type Selection
Input Specifications
Output Specifications
Input
L1, L2, L3, N
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
208 to 240 VAC
380 to 480 VAC (DPB02CM48)
380 to 415 VAC (PPB02CM48)
Ranges
Asymmetry
DPB02: Terminals L1, L2, L3, N
PPB02: Terminals 5, 6, 7, 11
Measure on own supply
177 to 275 VAC
323 to 550 VAC
323 to 475 VAC
2 to 22%
of the nominal voltage
Specifications are subject to change without notice (06.11.00)
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 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)
2-51
DPB02, PPB02
Supply Specifications
General Specifications (cont.)
Power supply
Rated operational voltage
through terminals:
L1, L2, L3, N
(DPB02)
5, 6, 7, 11
(PPB02)
M23:
Indication for
Power supply ON
Alarm ON
M48:
Rated operational power
DPB02CM23, PPB02CM23
DPB02CM48, PPB02CM48
Overvoltage cat. III
(IEC 60664, IEC 60038)
208 to 240 VAC ± 15%
45 to 65 Hz
380 to 480 VAC ± 15%
45 to 65 Hz
13 VA @ 230 VAC, 50 Hz
13 VA @ 400 VAC, 50 Hz
Supplied by L2 and L3
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
1 s ± 0.5 s or 6 s ± 0.5 s
< 200 ms
Output relay ON
Environment
Degree of protection
Pollution degree
Operating temperature
Storage temperature
Housing dimensions
DIN-rail version
Plug-in version
Weight
Screw terminals
Tightening torque
CE-marking
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%
@ 475 VAC, 65 Hz
-20 to 50°C, R.H. < 95%
@ 550 VAC, 65 Hz
-30 to 80°C, R.H. < 95%
22.5 x 80 x 99.5 mm
36 x 80 x 87 mm
Approx. 120 g
Max. 0.5 Nm
acc. to IEC 60947
Yes
< 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
Mode of Operation
Connected with the 3 phases (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 follows:
max{|∆Vph-ph|}
nom. voltage
when measuring phasephase voltages and also as
follows:
max{|∆Vph-n|}
nom. voltage
when measuring phase-neutral 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. In any
case if phase-neutral measurement is selected both
phase-phase and phaseneutral voltages are moni-
tored. 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 red LED
flashing 5 Hz after the alarm
condition occurs.
Example 2
(load monitoring)
The relay releases in case of
interruption of one or more
phases or when the asymmetry exceeds the set level.
Example 1
(mains network monitoring)
The relay monitors asymmetry, phase loss and correct
phase sequence.
Function/Range/Level and Time Delay Setting
Selection of function:
DIP-switch selector (1 to 2)
1
ON
Power ON delay 6 ± 0.5 s
Power ON delay 1 ± 0.5 s
2
Phase-phase voltage
Phase-neutral voltage
2-52
Selection of measuring range:
DIP-switch selector (3 to 4)
34
3 x 208 ∆ VAC (M23)
ON
3 x 380 ∆ VAC (M48)
3 x 220 ∆ VAC (M23)
3 x 400 ∆ VAC (M48)
3 x 230 ∆ VAC (M23)
3 x 415 ∆ VAC (M48)
3 x 240 ∆ VAC (M23)
3 x 480 ∆ VAC
(DPB02CM48)
Selection of asymmetry and
time delay:
Centre knob:
Setting of asymmetry on relative scale.
Lower knob:
Setting of delay on alarm time
on absolute scale (0.1 to 30 s).
Specifications are subject to change without notice (06.11.00)
DPB02, PPB02
Wiring Diagrams
Example 1
Example 1
N
L3
L2
L1
N
L3
L2
L1
µ
L1 L2 L3
m<3
16
µ
18
5
m<3
U
6
4
7
3
U
L2
L2
L3
N
L3
15
11
1
Example 2
Example 2
N
L3
L2
L1
N
L3
L2
L1
µ
µ
L1 L2 L3
m<3
16
18
5
m<3
6
7
4
3
U
U
L2
L2
L3
N
L3
15
11
1
PPB02
DPB02
Operation Diagrams
L2-L1 or
VL2-L1-VL3-L2
Asymmetry (+)
Hysteresis
L3-L2 or
VL3-L2-VL1-L3
Balanced
Hysteresis
Asymmetry (-)
L1-L3 or
VL1-L3-VL2-L1
T
Relay ON
1 or 6 s
Red LED ON
1 or 6 s
T
T
L1
L1
L2
L1
L2
L3
L1
L2
L3
L2
L3
L3
Relay ON
Red LED ON
1 or 6 s
Specifications are subject to change without notice (06.11.00)
2-53