K8DS-PA 3-phase control 3-Phase voltage, phase sequence, loss and asymmetry The K8DS-PA is the simplified 3-phase monitoring relay, 3-wire circuits with one unit. It can monitor voltage asymmetry with 3-phase sequence and loss at the same time. • 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-PA1 3-phase 3-wire mode 380, 400, 415, 480 VACK8DS-PA2 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. 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, 250VAC or 30 VDC Degree of protection Terminal section: IP20 Case material PC UL94 V-0 WeightApprox. 65 g Rated input voltageK8DS-PA1 3-phase,3-wire mode: 200, 220, 230, 240 VAC K8DS-PA2 3-phase, 3-wire mode: 380, 400, 415, 480 VAC Asymmetry operation (ASY.) Operating value setting rangeAsymmetry rate: 2% to 22% Operating value100% operation at set value Asymmetry operating value = rated input voltage x asymmetry set value [%] The asymmetry operation will function when the difference between the highest and lowest voltage phases equals or exceeds the asymmetry operating 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 0.1 s max. Power ON lock (LOCK) 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): Green,Relay output (RY): Yellow, Alarm outputs (ALM): 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: C22.2No. 14, CCC: GB14048.5 Size (H × W × D)80 × 17.5 × 74 mm 650
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