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 Measure their 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) DWB02 PWB02 45 mm Euronorm housing (DWB02) or 36 mm plug-in module (PWB02) LED indication for relay, alarm and power supply ON Product Description Ordering key DWB 02 C M48 10A DWB02 and PWB02 are device. Housing precise TRMS active power The advantage of using the Function monitoring relays for 3- latch function is that the Type phase balanced systems. alarm status can be kept Item number They can be used for moni- even after the end of the Output toring the actual load of alarm condition. Inhibit func- Power Supply asynchronous motors and tion can be used to avoid Range other symmetrical loads, as relay operation when not well as the power consump- desired (maintenance, tran- tion by of system. sitions). Start/stop input allows to The LED s indicate the state use a manual switch to start of the alarm and the output and stop the system, with- relay. out the need of an auxiliary Type Selection Mounting OutputSupply: Supply: Supply: Supply: 208 to 240 VAC 380 to 415 VAC 380 to 480 VAC 600 to 690 VAC DIN-rail SPDT DWB 02 C M23 10A DWB 02 C M48 10A DWB02 C M69 10A Plug-in SPDT PWB 02 C M23 10A PWB 02 C M48 10A Input Specifications Input Standard CT (examples) Voltage (Own power supply): TADK2 50 A/5 A 5 to 50 A 60 A 3 - phase DWB02: L1, L2, L3 CTD1 150 A/5 A 15 to 150 A 180 A PWB02: 5, 6, 7 CTD4 400 A/5 A 40 to 400 A 480 A M23: 208 to 240 VAC 15% TAD12 1000 A/5 A 100 to 1000 A 1200 A DWB02CM48: 380 to 480 VAC 15% TACO200 6000 A/5 A 600 to 6000 A 7200 A PWB02CM48: 380 to 415 VAC 15% MI CT ranges DWB02CM69: 600 to 690 VAC 15% MI 100 10 to 100 A 250 AAC 1- phase DWB02CM23: L1, L2 MI 500 50 to 500 A 750 AAC PWB02CM23: 5, 6 Note: 208 to 240 VAC 15% The input voltage cannot Current: DWB02: 5A, 10A: I1, I2 raise over 300 VAC with MI...:U1, U2 respect to ground (PWB02 PWB02: 5A, 10A: 11, 10 only) MI...: 9, 8 Contact input Measuring ranges Upper level Lower level DWB02 Terminals Z1, U2 Active power 10 to 110 % 10 to 110 % PWB02 Terminals 2, 9 AACrms Max. curr. Disabled > 10 k (30s) Enabled < 500 Direct input: 0.5 to 5A 30A Pulse width > 500 ms 1 to 10A 50A Hysteresis ~ 2% of set value - fixed Specifications are subject to change without notice (07.06.10) 1DWB02, PWB02 Output Specifications General Specifications Output SPDT relay Power ON delay 1 to 30 s 0.5 s Rated insulation voltage 250 VAC Reaction time (input signal variation from -20% to +20% or from Contact ratings (AgSnO) 2 +20% to -20% of set value) Resistive loads AC 1 8 A 250 VAC Alarm ON delay < 250 ms DC 12 5 A 24 VDC Alarm OFF delay < 250 ms Small inductive loads AC 15 2.5 A 250 VAC DC 13 2.5 A 24 VDC Accuracy (15 min warm-up time) 6 Temperature drift 1000 ppm/C Mechanical life 30 x 10 operations Delay ON alarm 10% on set value 50 ms 5 Electrical life 10 operations Repeatability 0.5% on full-scale (at 8 A, 250 V, cos = 1) Indication for Operating frequency 7200 operations/h Power supply ON LED, green Dielectric strength Alarm ON LED, red (flashing 2 Hz Dielectric voltage 2 kVAC (rms) during delay time) Rated impulse withstand volt. 4 kV (1.2/50 s) Output relay ON LED, yellow Environment Degree of protection IP 20 Supply Specifications Pollution degree 3 (DWB02), 2 (PWB02) Operating temperature Power supply Overvoltage cat. III Max. voltage, 50 Hz -20 to +60C, R.H. < 95% Rated operational voltage (IEC 60664, IEC 60038) Max. voltage, 60 Hz -20 to +50C, R.H. < 95% Through terminals: Storage temperature -30 to +80C, R.H. < 95% DWB02: L1, L2, L3 Housing PWB02: 5, 6, 7 Dimensions DWB02 45 x 80 x 99.5 mm M23 177 to 276 VAC 45 to 65 Hz PWB02 36 x 80 x 94 mm DWB02CM48 323 to 552 VAC 45 to 65 Hz Material PA66 or Noryl PWB02CM48 323 to 477 VAC 45 to 65 Hz Weight Approx. 250 g DWB02CM69 510 to 793 VAC 45 to 65 Hz Dielectric voltage supply to output 4 kV Screw terminals Tightening torque Max. 0.5 Nm Rated operational power acc. to IEC 60947 M23 9 VA 230 V, 50 Hz M48 13 VA 400 V, 50 Hz Product standard EN 60255-6 M69 21 VA 600 V, 50 Hz Approvals UL, CSA Supplied by L1 and L2 CE Marking L.V. Directive 2006/95/EC EMC Directive 2004/108/EC EMC Immunity According to EN 60255-26 According to EN 61000-6-2 Emissions According to EN 60255-26 According to EN 61000-6-3 Mode of Operation DWB02 and PWB02 mea- power supply is applied. Example 2 red LED starts flashing, and sure the active power of a 3- After the power ON delay, Non-latching mode, relay the output relay releases phase balanced system. The the unit starts to measure NE. after the set time period. relay has an adjustable pow- power. If it is within the set- DWB02 and PWB02 react er ON delay in order to avoid points, the relay is ener- as described in the previous Example 3: undesired overload detec- gized, and the yellow LED is example 1 except that theDWB02CM2310A and tion during motor start. ON. As soon as the power relay reactivates automati- PWB02CM2310A can be drops below the lower set- cally as soon as active pow- used for monitoring the Example 1 point or raises above the er is back within the two power of a 1-Phase load Latching mode, relay NE upper setpoint the output setpoints again. When the with 208 to 240 V AC mains In this application DWB02 or relay releases after the set measured power rises voltage. In this case the PWB02 is connected to an time has expired. To restart above the adjusted upper power supply has to be con- external current metering the measurement, connect level, the red LED starts nected between L1, L2 (or 5, transformer, type MI..., (con- Z1 and U1 (2 and 9) or inter- flashing, and the output 6) L2 and L3 (or 6 and 7) nected between U1 & U2) as rupt the power supply for at relay releases after the set have to be interconnected. well as to a 3-phase asyn- least 1 s. time period. When the mea- chronous motor. The relay is sured power drops below energized as soon as the the adjusted lower level, the 2 Specifications are subject to change without notice (07.06.10)