Specifications are subject to change without notice (19.07.06)
1
Monitoring Relays
True RMS 3-Phase, 3-Phase+N, Multifunction
Type DPC02
TRMS 3-phase over and under voltage,
over and under frequency, phase sequence and
phase loss monitoring relay
Detect when all 3 phases are present and have the
correct sequence
Detect if all the 3-phase-phase or phase-neutral
voltages are within the set limits
Detect if the system frequency is between the set
limits
Separately adjustable setpoints
Separately adjustable delay functions (0.1 to 30 s)
Output: 2 x 8 A relay SPDT
For mounting on DIN-rail in accordance with
DIN/EN 50 022
45 mm Euronorm housing
LED indication for relays, alarm and power supply ON
Product Description
3-phase or 3-phase+neutral
line voltage monitoring
relays for phase sequence,
phase loss, over and under
voltage (separately
adjustable set points), over
and under frequency with
built-in time delay function.
Supply ranges from 208 to
690 VAC covered by four
multivoltage relays. The
main application is for gen-
erator sets.
Type Selection
Mounting
DIN-rail
Output
2 x SPDT
Supply:
208 to 240 VAC
DPC 02 D M23
Supply:
380 to 415 VAC
DPC 02 D M48
Supply:
440 to 480 VAC
DPC 02 D M49
Supply:
600 to 690 VAC
DPC 02 D M69
Input Specifications
Input
L1, L2, L3, N
DPC02:
Terminals L1, L2, L3, N
Measure on own supply
Note: Connect the neutral only
if it is intrinsically at the star
centre
Measuring ranges (voltage)
M23
177 to 275
VAC
M48
323 to 475
VAC
M49
374 to 552
VAC
M69
510 to 793
VAC
Measuring ranges (frequency) Upper level
Lower level
Selectable by DIP-switches
2 Hz range
+0.2 to +2.2 Hz -2.2 to -0.2 Hz
50 Hz
50.2 to 52.2 Hz 47.8 to 49.8 Hz
60 Hz
60.2 to 62.2 Hz 57.8 to 59.8 Hz
15 Hz range
+1.5 to +16.5 Hz -16.5 to -1.5 Hz
50 Hz
51.5 to 66.5 Hz 33.5 to 48.5 Hz
60 Hz
61.5 to 76.5 Hz 43.5 to 58.5 Hz
Ranges
Upper voltage level
+2 to +22%
of the nominal voltage
Lower voltage level
-22 to -2%
of the nominal voltage
Frequency window
10 to 110%
of the selected range
Hysteresis (frequency)
2 Hz range
~ 0.05 Hz
15 Hz range
~ 0.25 Hz
Note: The input voltage
must not exceed the maxi-
mum rated voltage or drop
below
the minumum rated
voltage reported above.
Ordering key
DPC 02 D M48
Housing
Function
Type
Item number
Output
Power Supply
2
Specifications are subject to change without notice (19.07.06)
General Specifications
Supply Specifications
Power supply
Overvoltage cat. III
Rated operational voltage
(IEC 60664, IEC 60038)
through terminals:
L1, L2, L3, N
M23 - Delta Voltage:
208 to 240 VAC 15%
45 to 65 Hz
M48 - Delta Voltage:
380 to 415 VAC 15%
45 to 65 Hz
M48 - Star Voltage:
220 to 240 VAC 15%
45 to 65 Hz
M49 - Delta Voltage:
440 to 480 VAC 15%
45 to 65 Hz
M49 - Star Voltage
254 to 277 VAC 15%
45 to 65 Hz
M69 - Delta Voltage:
600 to 690 VAC 15%
45 to 65 Hz
M69 - Star Voltage:
347 to 400 VAC 15%
45 to 65 Hz
Rated operational power
M23
8 VA, 50/60 Hz
M48
Supplied by L2 and L3
M49
M69
Power ON delay
1 s 0.5 s
Accuracy
(15 min warm-up time)
Temperature drift
1000 ppm/C
Delay ON alarm
10% on set value 50 ms
Repeatability
0.5% on full-scale
Reaction time
Incorrect phase sequence
or total phase loss
< 200 ms
Voltage level
(input signal variation from
-20% to +20% or from
+20% to -20% of set value)
Frequency level
Alarm ON delay:
< 200 ms (delay < 0.1 s)
Alarm OFF delay:
< 200 ms (delay < 0.1 s)
Indication for
Power supply ON
LED, green
Alarm ON
LED, red (flashing 2 Hz
during delay time)
Output relays ON
2 x LED, yellow
Environment
(EN 60529)
Degree of protection
IP 20
Pollution degree
3
Operating temperature
8A output
-20 to +50C, R.H. < 95%
5A output
-20 to +60C, R.H. < 95%
Storage temperature
-30 to 80C, R.H. < 95%
Housing
Dimensions
45 x 80 x 99.5 mm
Weight
Approx. 220 g
Screw terminals
Tightening torque
Max. 0.5 Nm
acc. to IEC 60947
Approvals
UL, CSA
CE Marking
Yes
EMC
Electromagnetic Compatibility
Immunity
According to EN 61000-6-2
Emissions
According to EN 61000-6-3
Mode of Operation
Connected to the 3 phases
(and neutral) DPC02 operates
when all 3 phases are present
at the same time and the
phase sequence is correct.
Voltage and frequency
level monitoring:
if one or more phase-phase
or phase-neutral voltage
exceed the upper set level or
drop below the lower set
level, the red LED starts
flashing 2 Hz and the
respective output relay
releases after the set time
period. If the mains frequen-
cy gets out of the symmetri-
cal window across the nomi-
nal frequency the red LED
starts flashing 2 Hz and the
respective output relay
releases after the set time
period.
Example 1
(Generator monitoring -
2xSPDT relays - phase-
phase voltage)
The relay monitors phase
loss and correct phase
sequence, over and under
voltage and the frequency of
the system. A voltage failure
is detected through relay 1
and a frequency failure is
detected through relay 2.
Example 2
(Mains monitoring - DPDT
relay)
DPC02 monitors phase loss
and correct phase
sequence, over and under
voltage and the frequency.
Every failure is detected
through relays 1 and 2 at the
same time to allow indepen-
dent operations.
DPC02
Output Specifications
Output
2 x SPDT relays N.E.
Rated insulation voltage
250 VAC
Contact ratings (AgSnO
2
)
Resistive loads
AC 1
8 A @ 250 VAC
DC 12
5 A @ 24 VDC
Small inductive loads AC 15
2.5 A @ 250 VAC
DC 13
2.5 A @ 24 VDC
Mechanical life
30 x 10
6
operations
Electrical life
10
5
operations
(at 8 A, 250 V, cos
= 1)
Operating frequency
7200 operations/h
Dielectric strength
Dielectric voltage
2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 s)
Specifications are subject to change without notice (19.07.06)
3
DPC02
Function/Range/Level/Time Setting
Adjust the input range set-
ting the DIP-switches 3 and
4. Select the desired func-
tion setting the DIP-switches
5 and 6 as shown on the left.
To access the DIP-switches
open the plastic cover using
a
screwdriver as shown
below.
Upper left knob:
Setting of upper voltage
level on relative scale.
Centre left knob:
Setting of lower voltage level
on relative scale.
Centre right knob:
Setting of frequency window
width on relative scale.
Lower knobs:
Setting of delay on alarm
time on absolute scale:
0.1 to 30 s.
Output
ON:
2 x SPDT relays
OFF:
1 x DPDT relay
Monitoring
ON:
Phase-Neutral voltages
OFF:
Phase-Phase voltages
System frequency
ON: 60 Hz
OFF: 50 Hz
Frequency setpoint range
ON: 2 Hz
OFF: 15 Hz
Measuring range
SW3
ON
ON
OFF
OFF
SW4
ON
OFF
ON
OFF
M23 Ph-Ph
208 VAC 220 VAC 230 VAC
240 VAC
Voltage
M48 Ph-Ph
380 VAC 400 VAC 415VAC
415VAC
Voltage
M48 Ph-N
220 VAC 230 VAC 240 VAC
240 VAC
Voltage
M49 Ph-Ph
440 VAC 440 VAC 480 VAC
480 VAC
Voltage
M49 Ph-N
254 VAC 254 VAC 277 VAC
277 VAC
Voltage
M69 Ph-Ph
600 VAC 600 VAC 690 VAC
690 VAC
Voltage
M69 Ph-N
347 VAC 347 VAC 400 VAC
400 VAC
Voltage
45
8
0
8
3
.
5
99.5
6
3
28.5
Dimensions
Phase sequence, total phase loss
Operation Diagrams
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