Monitoring Relays 3-Phase Load Guard Types DWA01, PWA01 Cos monitoring relays Measuring if power factor is within set limits Measure their own power supply (voltage) and current for balanced systems Measuring ranges for current: 5A and MI current transformers range Power ON delay 1, 2 or 6 s selectable Knob adjustable level on absolute scale Output: 8 A SPDT relay Normally Energized For mounting on DIN-rail in accordance with DIN/EN 50 022 (DWA01) or plug-in module (PWA01) 22.5 mm Euronorm housing (DWA01) or 36 mm plug-in module (PWA01) DWA01 PWA01 LED indication for power supply and output ON Product Description Ordering key DWA 01 C M48 5A DWA01 and PWA01 are pre- For current measure direct Housing cise over or under cos connection, 5A standard Function monitoring relays. current transformers and MI Type The relays monitor their own CT can be used. Item number power supply voltage and The LED s indicate the state Output the current of a balanced 3- of the alarm and the output Power Supply phase system. relay. Range Type Selection Mounting Output Supply: 208 to 240 VAC Supply: 380 to 415 VAC Supply: 380 to 480 VAC DIN-rail SPDT DWA 01 C M23 5A DWA 01 C M48 5A Plug-in SPDT PWA 01 C M23 5A PWA 01 C M48 5A Input Specifications Input Measuring ranges Voltage (Own power supply): Level 3 - phase DWA01: L1, L2, L3 Power factor (cos ) 0.1 to 0.99 PWA01: 5, 6, 7 M23: 208 to 240 VAC 15% AACrms Max. curr. DWA01CM48: 380 to 480 VAC 15% Direct input 0.5 to 5 A 30A 30s PWA01CM48: 380 to 415 VAC 15% Standard CT (examples) 1- phase DWA01CM235A: L1, L3 TADK 2 50 A/5 A 5 to 50 A 60 A PWA01CM235A: 5, 7 CTD1 150 A/5 A 15 to 150 A 180 A 208 to 240 VAC 15% CTD4 400 A/5 A 40 to 400 A 480 A Current DWA01: 5A: L1, I2 TAD12 1000 A/5 A 100 to 1000 A 1200 A MI CT: U1, U3 TACO200 6000 A/5 A 600 to 6000 A 7200 A PWA01: 5A: 9, 10 MI CT ranges MI CT: 8, 11 MI 100 10 to 100 A 250 AAC MI 500 50 to 500 A 750 AAC Note: The input voltage cannot raise over 300 VAC with respect to ground (PWA01 only). Hysteresis ~ cos = 0,02 - fixed Specifications are subject to change without notice (23.11.10) 1DWA01, PWA01 Output Specifications Supply Specifications Output SPDT relay Power supply Overvoltage cat. III Rated operational voltage (IEC 60664, IEC 60038) Rated insulation voltage 250 VAC through terminals: Contact ratings (AgSnO) 2 DWA01: L1, L2, L3 Resistive loads AC 1 8 A 250 VAC PWA01: 5, 6, 7 DC 12 5 A 24 VDC M23 177 to 276 VAC 45 to 65 Hz Small inductive loads AC 15 2.5 A 250 VAC DWA01CM48 323 to 552 VAC 45 to 65 Hz DC 13 2.5 A 24 VDC PWA01CM48 323 to 477 VAC 45 to 65 Hz 6 Mechanical life 30 x 10 operations 5 Dielectric voltage None Electrical life 10 operations supply to output 2kV (at 8 A, 250 V, cos = 1) Rated operational power 13 VA 400VAC Operating frequency 7200 operations/h Supplied by L1 and L3 Dielectric strength Dielectric voltage 2 kVAC (rms) Rated impulse withstand volt. 4 kV (1.2/50 s) General Specifications Power ON delay 1, 2, or 6 s 0.5 s Housing Dimensions DWA01 22.5 x 80 x 99.5 mm Reaction time (input signal variation from PWA01 36 x 80 x 94 mm -20% to +20% or from Material PA66 or Noryl +20% to -20% of set value) Alarm ON delay < 400 ms Weight Approx. 200 g Alarm OFF delay < 400 ms Screw terminals Accuracy (15 min warm-up time) Tightening torque Max. 0.5 Nm Temperature drift 1000 ppm/C acc. to IEC 60947 Repeatability 0.5% on full-scale Product standard EN 60255-6 Indication for Approvals UL, CSA Power supply ON LED, green CE Marking L.V. Directive 2006/95/EC Output ON LED, yellow EMC Directive 2004/108/EC Environment EMC Degree of protection IP 20 Immunity According to EN 60255-26 Pollution degree 3 (DWA01), 2 (PWA01) According to EN 61000-6-2 Operating temperature Emissions According to EN 60255-26 Max. voltage, 50 Hz -20 to 60C, R.H. < 95% According to EN 61000-6-3 Max. voltage, 60 Hz -20 to 50C, R.H. < 95% Storage temperature -30 to 80C, R.H. < 95% Function/Delay/Level Settings Level setting (cos ): Setting of function and the power ON delay with DIP screwdriver as shown on the Knob adjustable on absolute power ON delay Switches 3 and 4 as shown left. scale, from 0.1 to 0.99 Adjust the desired function on the below table. To (over or underload monitor- access the DIP-switch open ing) with DIP switch 1 and the plastic cover using a Monitoring function ON: Under cos OFF: Over cos Not used Power ON delay SW3 SW4 OFF OFF: 6 sec ON OFF: 2 sec ON ON: 1 sec 2 Specifications are subject to change without notice 23.11.10)