K8DS-PZ2 387488 OMRON Monitoring Relays, Three Phase undervoltage + Sequence + Per phase + Overvoltage + asy.. View larger
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K8DS-PZ2 387488 OMRON Monitoring Relays, Three Phase undervoltage + Sequence + Per phase + Overvoltage + asy..





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Monitoring Relays, Three Phase undervoltage + Sequence + Per phase + Overvoltage + asymmetry 380-480AC 17.5mm

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K8DS-PZ 3-phase control
3-Phase asymmetry, phase sequence, phase-loss and over-/undervoltage relay
The K8DS-PZ is the simplified 3-phase monitoring relay, 3-wire circuits with one unit. It can monitor undervoltages, overvoltages, voltage asymmetry, phase sequence and phase-loss.
• Greater resistance to inverter noise
• One SPDT output relay, 5 A at 250 VAC (resistive load)
• World-wide power specifications supported by one unit (Set with a rotary switch)
• Relay status can be monitored using LED indicator
Ordering information
Rated input Order code
3-phase 3-wire mode 200, 220, 230, 240 VAC K8DS-PZ1
3-phase 3-wire mode 380, 400, 415, 480 VAC K8DS-PZ2
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 frequency 50/60 Hz (AC power supply)
Output relays
(1 × SPDT, normally closed operation)
Resistive load 5 A at 250 VAC or at 30 VDC Maximum contact voltage 250 VAC or 30 VDC Maximum contact current 5 A
Maximum switching capacity 1,250 VA, 150 W
Mechanical life 10,000,000 operations
Electrical life 50,000 operations at 5 A, 250 VAC
Degree of protection Terminal section: IP20
Case material PC UL94 V-0
Weight Approx. 65 g
Rated input voltage K8DS-PZ1 3-phase, 3-wire mode: 200, 220, 230, 240 VAC
K8DS-PZ2 3-phase, 3-wire mode: 380, 400, 415, 480 VAC
Operation (overvoltage or undervoltage)
Asymmetry operation
Operating value setting range Overvoltage/undervoltage: 2% to 30% of rated input voltage
Operating value 100% operation at set value Operating value setting range Asymmetry rate: 5% to 22% Operating value 100% 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 method Automatic reset
Operating time (T) Asymmetry 0.1 to 30 s
Overvoltage/undervoltage 0.1 to 30 s
Phase-sequence, phase-loss 0.1 s ±0.05 s, 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)
Indicators Power (PWR): Green, Relay output (RY): Yellow LED, Alarm output: Red LED
Applicable standards Conforming standards EN 60947-5-1
Installation environment (pollution level 2, installation category III)
EMC EN 60947-5-1
Safety standards UL 508 (Recognition), Korean Radio Waves Act (Act 10564), CSA: C22.2 No.14
Size in mm (H × W × D) 80 × 17.5 × 74

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