Selected parameters OUTPUT SIGNAL 1 relay SETPOINTS 2, adjustable MONITORED VARIABLE Power and power factor monitoring Others SIZE 36 mm POWER SUPPLY RANGE 380÷415 VAC MONITORING FUNCTION Active power monitoring MOUTING Plug-in INPUT RANGE 10 A, 690 VAC DELAY 1, adjustable
Monitoring Relays 3-Phase Active power direction Types DWB03, PWB03 DWB03PWB03 • 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 (DWB03) or plug-in module (PWB03) • 45 mm Euronorm housing (DWB03) or 36 mm plug-in module (PWB03) • LED indication for relay, alarm and power supply ON Product Description Ordering key DWB 03 C M48 10A DWB03 and PWB03 are precise TRMS active power monitoring relays for 3- phase balanced systems. They can be used for moni- toring the actual load of asynchronous motors and other symmetrical loads, as well as to see if the power flows in the correct direc- tion. Start/stop input allowsto use a manual switch to start and stopthe system, with- out the need of an auxiliary device. The advantage of using the latch function is that the alarm status can be kept even after the end of the alarm condition. The LED's indicate the state of the alarm and the output relay. Housing Function Type Item number Output Power Supply Range Type Selection MountingOutputSupply: Supply:Supply: Supply: 208 to 240 VAC380 to 415 VAC 380 to 480 VAC600 to 690 VAC DIN-rail SPDT DWB 03 C M23 10A DWB 03 C M48 10A DWB03 C M69 10A Plug-in SPDT PWB 03 C M23 10A PWB 03 C M48 10A InputSpecifications Input Voltage (own power supply): 3 - phase DWB03: L1, L2, L3 PWB03: 5, 6, 7 M23: 208 to 240 VAC ± 15% DWB03CM48: 380 to 480 VAC ± 15% PWB03CM48: 380 to 415 VAC ± 15% DWB03CM69: 600 to 690 VAC ± 15% 1- phase DWB03CM23: L1, L2 PWB03CM23: 5, 6 208 to 240 VAC ± 15% Current:DWB03: 5A, 10A: I1, I2 MI...:U1, U2 PWB03: 5A, 10A: 11, 10 MI...: 9, 8 Measuring ranges Upper level Lower level Active power -100 to 100 %-100 to 100 % AACrmsMax. curr. (30s) Direct input:0.5 to 5A30A 1 to 10A 50A Standard CT (examples) TADK2 50 A/5 A5 to 50 A60 A CTD1 150 A/5 A15 to 150 A180 A CTD4 400 A/5 A40 to 400 A480 A TAD12 1000 A/5 A100 to 1000 A1200 A TACO200 6000 A/5 A600 to 6000 A7200 A MI CT ranges MI 100 10 to 100 A250 AAC MI 500 50 to 500 A750 AAC Note: The input voltage cannot raise over 300 VAC with respect to ground (PWB03 only) Contact input DWB03 Terminals Z1, U2 PWB03 Terminals 2, 9 Disabled > 10 kΩ Enabled< 500 Ω Pulse width > 500 ms Hysteresis~ 2% of set value - fixed Specifications are subject to change without notice (07.06.10)1
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