Selected parameters OUTPUT SIGNAL 1 relay SETPOINTS 1, adjustable MONITORED VARIABLE Power and power factor monitoring Others SIZE 22,5 mm POWER SUPPLY RANGE 208÷240 VAC MONITORING FUNCTION PF monitoring MOUTING DIN-rail INPUT RANGE 0.1-0.99
Monitoring Relays 3-Phase LoadGuard Types DWA01, PWA01 DWA01PWA01 • Cos ϕ 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) • LED indication for power supply and output ON Product Description Ordering key DWA01 C M48 5A DWA01 and PWA01 are pre- cise over or under cos ϕ monitoring relays. The relays monitor their own powersupplyvoltageand the current of a balanced 3- phase system. Forcurrentmeasure direct connection, 5A standard current transformers and MI CT can be used. 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: 208 to 240 VAC Supply: 380 to 415 VAC Supply: 380 to 480 VAC DIN-railSPDTDWA 01 C M23 5A DWA 01 C M48 5A Plug-in SPDTPWA 01 C M23 5APWA 01 C M48 5A InputSpecifications Input Voltage (Own power supply): Measuring ranges Level 3 - phaseDWA01: L1, L2, L3 PWA01: 5, 6, 7 M23: 208 to 240 VAC ± 15% DWA01CM48: 380 to 480 VAC ± 15% PWA01CM48: 380 to 415 VAC ± 15% 1- phaseDWA01CM235A: L1, L3 PWA01CM235A: 5, 7 208 to 240 VAC ± 15% Current DWA01: 5A: L1, I2 MI CT: U1, U3 PWA01: 5A: 9, 10 MI CT: 8, 11 Power factor (cos ϕ) 0.1 to 0.99 AACrmsMax. curr. Direct input 0.5 to 5 A 30A 30s Standard CT (examples) TADK 2 50 A/5 A 5 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 (PWA01 only). Hysteresis~ cos ϕ = 0,02 - fixed Specifications are subject to change without notice (23.11.10)1
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