K8DS-PU 3-phase control 3-phase voltage asymmetry, phase-sequence, phase-loss and undervoltage relay The K8DS-PU is the simplified 3-phase monitoringrelay, 3-wire circuits with one unit. It can monitor undervoltages, asymmetry, phase sequence and phase loss. • Greater resistance to inverter noise •OneSPDT output relay, 5 A at 250 VAC (resistive load) • World-wide power specifications supported by one unit (Set with a rotary switch) • Relay statuscan be monitoredusing LED indicator Ordering information Rated input Order code 3-phase 3-wire mode 200, 220, 230, 240 VACK8DS-PU1 3-phase 3-wire mode 380, 400, 415, 480 VACK8DS-PU2 Specifications Ambient operating temperature –20 to 60°C (with no condensation or icing) Storage temperature –25 to 65°C (with no condensation or icing) Altitude 2,000 m max. Voltage fluctuation range (UNDER) Undervoltage30 to 25% of rated input voltage Input frequency50/60 Hz (AC power supply) Output relays (1× SPDT, normally closed operation) Resistive load5 A at 250VAC or at 30 VDC Maximum contact voltage250VAC or 30 VDC Maximum contact current 5 A Maximum switching capacity 1,250 VA, 150 W Mechanical life10,000,000 operations Electrical life 50,000 operations at 5 A, 250 VAC Degree of protection Terminal section: IP20 Case material PC UL94 V-0 WeightApprox. 65 g Rated input voltageK8DS-PU1 3-phase,3-wire mode: 200, 220, 230, 240 VAC K8DS-PU2 3-phase, 3-wire mode: 380, 400, 415, 480 VAC Operation (overvoltage or undervoltage) Operating value setting rangeUndervoltage = –30% to 25% of maximum rated input voltage Operating value100% operation at set value Reset (HYS.)Hysteresis 5% of operating value (fixed) Resetting methodAutomatic reset Operating time (T) Asymmetry0.1 to 30 s Phase-sequence0.1 s ±0.5 s Phase-loss 0.1s ±0.05s Power ON lock (LOCK)0.1 s ±0.5 s Overload capacity Continuous input: 500 V Repeat accuracy Operating value±0.5% full scale (at 25°C and an ambient humidity of 65% at the rated power supply voltage, 50/60 Hz sine wave input) Operating time±50 ms (at 25°C and 65% humidity, rated power supply voltage) IndicatorsPower (PWR): GreenLED, relayoutput (RY): YellowLED, UNDER: Red Applicable standards Conforming standards EN 60947-5-1 Installation environment (pollution level 2, installation category III) EMC EN 60947-5-1 Safety standardsUL 508 (Recognition), Korean Radio Waves Act (Act 10564), CSA and CCC Size in mm (H × W × D) 80 × 17.5 × 74 652
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