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Reverse phase, open phase relay, K8DS-PH

Reverse phase, open phase relay, K8DS-PH
  • On Sale Till 31/03/2025

OMRON

OMRON

Reverse-Phase Open-Phase Relay K8DS-PH

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Part Number

Configured Part Number is shown.

K8DS-PH1

Three-Phase Phase-Sequence Phase-Loss Relay With Voltage Detection Method Specifications

Phase-Sequence Phase-Loss Relay K8DS-PH: related images

K8DS-PH1 external appearance

Functions: phase sequence + phase-loss monitoring
Rated input voltage*: 3-phase, 3-wire, 200 to 480 V AC
Relay output: 1C × 1
*The power supply voltage is the same as the rated input voltage.

Rating

-K8DS-PH1
Rated Input Voltage3φ, 200 to 480 V AC (3-phase, 3 wire)
Input LoadApprox. 2.7 VA
Operating TimePhase-Sequence0.1 sec ±0.05 sec
Phase-Loss0.1 sec max.
(When voltage suddenly changes from 100% → 0% of rated voltage)
Reset MethodAutomatic reset
LED IndicatorsPWR: green, RY: yellow
Output Format1 c contact output (normally closed operation)
Output Contact RatingRated load
Resistive load
250 V AC, 5 A
30 V DC, 5 A
Maximum switching capacity: 1,250 VA, 150 W
Minimum applied load 5 V DC, 10 mA (reference value)
Mechanical life 10,000,000 count min.
Electrical life (250 V AC/30 V DC, 5 A) 50,000 operations (250 V AC/30 V DC, 3 A) 100,000 operations
Ambient Operating Temperature-20 to +60°C (assuming no icing or condensation)
Storage Temperature-25 to +65°C (assuming no icing or condensation)
Ambient Operating HumidityRelative Humidity 25 to 85% (assuming no condensation)
Storage HumidityRelative Humidity 25 to 85% (assuming no condensation)
Altitude2,000 m max.
Terminal Screw Tightening Torque0.49 to 0.59 N·m
Terminal Wiring MethodRecommended wire
Solid wire: 2.5 mm2
Twisted wires: AWG #16, AWG #18
*Ferrules with insulating sleeves must be used with twisted wires.
*Two wires can be twisted together
Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case Exterior ColorN1.5
Case MaterialPC UL94-V0
WeightApprox. 60 g
MountingDIN track mounting
External Dimensions17.5 (W) × 80 (H) × 74 (D) mm

Performance

-K8DS-PH1
Input Voltage Range200 to 480 V AC
Input Frequency50/60 Hz
Overload CapacityContinuous 500 V
Phase Loss Detection Level80% of rated input ±10%
Calculation formula
= 1 - ((Highest phase-to-phase voltage − Lowest phase-to-phase voltage) / Average three-phase phase-to-phase voltage)
Applicable StandardsApproved StandardsEN60947-5-1
Installation environment (pollution level 2, installation category III)
EMCEN60947-5-1
Safety StandardsUL508 (Recognition), Korean Radio Waves Act (Act No. 10564), CSA C22.2 No. 14, CCC: GB14048.5
Insulation Resistance20 MΩ min.
Between external terminals and case
Between input terminals and output terminals
Dielectric Strength2,000 V AC for 1 min
Between external terminals and case
Between input terminals and output terminals
Noise Resistance1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μs/100 ns pulse width with 1-ns rise time
Vibration ResistanceFrequency: 10 to 55 Hz, 0.35-mm single amplitude, 10 sweeps × 5 mins each in X, Y and Z directions
Shock Resistance100 m/s2, 3 times each in 6 directions along 3 axes
Protective StructureTerminals: IP20

Relationship of Mounting Distance between K8DS-PH Relays and Ambient Temperature (Reference Values)

Phase-Sequence Phase-Loss Relay K8DS-PH: related images

Relationship between mounting distance and ambient temperature. If used with an ambient temperature that exceeds these values, the temperature of the K8DS may rise and shorten the life of the internal components.

Phase-Sequence Phase-Loss Relay K8DS-PH: related images

Test sample: Model K8DS-PH
Distance between product: 0 mm, 5 mm, 10 mm min.

Connection

Phase-Sequence Phase-Loss Relay K8DS-PH: related images

Note 1: Use the recommended ferrules if you use twisted wires.

Phase-Sequence Phase-Loss Relay K8DS-PH: related images

Wiring example

  • *See the catalog for any other specifications, key safety points, usage precautions, warnings, etc.
30
45
60
  1. 1
Part Number
K8DS-PH1
Part NumberMinimum order quantityVolume DiscountDays to Ship
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Basic Information

Type Reverse-phase/open-phase relay Power Supply Voltage(V) AC 200–480 (three-phase/three-wire)

Please check the type/dimensions/specifications of the part K8DS-PH1 in the Reverse phase, open phase relay, K8DS-PH series.

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