Monitoring Relays
3-Phase Active power
Types DWB02, PWB02
• TRMS active power relays for three phase
balanced applications
• Measuring if active power is within set limits
• Measuring voltage on own power supply
• Measuring ranges: 5A, 10A, MI current transformers
• Power ON delay 1 to 30 s knob selectable
• Separately adjustable upper/lower level on relative
scale
• Programmable latching or inhibit at set level
• Automatic and manual start and stop of the system
• Output: 8 A SPDT relay N.D. or N.E. selectable
• For mounting on DIN-rail in accordance with DIN/EN
50 022 (DWB02) or plug-in module (PWB02)
• 45 mm Euronorm housing (DWB02) or 36 mm plug-in
module (PWB02)
DWB02
PWB02
• LED indication for relay, alarm and power supply ON
Product Description
Ordering key
DWB 02 C M48 10A
DWB02 and PWB02 are stop the system, without the Housing
precise TRMS active power need of an auxiliary device.
monitoring relays for 3- The advantage of using the
phase balanced systems. latch function is that the alarm
They can be used for moni- status can be kept even after
toring the actual load of the end of the alarm condi-
asynchronous motors and tion. Inhibit function can be
other symmetrical loads, as used to avoid relay operation
well as the power consump- when not desired (mainte-
Function
Type
Item number
Output
Power Supply
Range
tion by of system.
nance, transitions).
Start/stop input allows to use The LED's indicate the state of
a manual switch to start and the alarm and the output relay.
Type Selection
Mounting
Output
Supply:
208 to 240 VAC
Supply:
380 to 415 VAC
Supply:
380 to 480 VAC
Supply:
600 to 690 VAC
DIN-rail
Plug-in
SPDT
SPDT
DWB 02 C M23 10A
PWB 02 C M23 10A
DWB 02 C M48 10A
DWB02 C M69 10A
PWB 02 C M48 10A
Input Specifications
Input
Standard CT (examples)
Voltage (Own power supply):
TADK2 50 A/5 A
TAD2 150 A/5 A
TAD6 400 A/5 A
TAD12 1000 A/5 A
TACO200 6000 A/5 A
MI CT ranges
MI 100
5 to 50 A
15 to 150 A
40 to 400 A
100 to 1000 A 1200 A
600 to 6000 A 7200 A
60 A
180 A
480 A
3 - phase
DWB02:
PWB02:
L1, L2, L3
5, 6, 7
208 to 240 VAC 15%
380 to 480 VAC 15%
380 to 415 VAC 15%
600 to 690 VAC 15%
L1, L2
M23:
DWB02CM48:
PWB02CM48:
DWB02CM69:
DWB02CM23:
PWB02CM23:
10 to 100 A
50 to 500 A
250 AAC
750 AAC
1- phase
Current:
MI 500
5, 6
Note:
208 to 240 VAC 15%
5A, 10A: I1, I2
MI...:U1, U2
5A, 10A: 11, 10
MI...: 9, 8
The input voltage cannot
raise over 300 VAC with
respect to ground (PWB02
only)
DWB02:
PWB02:
Contact input
DWB02
PWB02
Disabled
Enabled
Measuring ranges
Active power
Upper level Lower level
10 to 110 % 10 to 110 %
AACrms
Terminals Z1, U2
Terminals 2, 9
> 10 kΩ
< 500 Ω
> 500 ms
Max. curr.
(30s)
30A
Pulse width
Direct input:
0.5 to 5A
1 to 10A
50A
Hysteresis
~ 2% of set value - fixed
Specifications are subject to change without notice (09.12.05)
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