Reverse phase, open phase relay, K8DS-PH
Caution
Product Description
Three-phase phase-sequence phase-loss relay using the voltage detection method.
[Features]
· 17.5 mm slim and small types also available.
· Greater resistance to inverter noise.
· Distinguishes between positive phases, reverse phases, and open phase when power is turned ON.
· Supports open phase detection when the motor is operating.
· The output status can be monitored using the LED indicator.
· Ideal to prevent reverse operation of motors.
[Applications]
· Used for three-phase motors and to prevent malfunctions during reverse and open phases.
Three-Phase Phase-Sequence Phase-Loss Relay With Voltage Detection Method Specifications
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 Voltage | 3φ, 200 to 480 V AC (3-phase, 3 wire) | |
| Input Load | Approx. 2.7 VA | |
| Operating Time | Phase-Sequence | 0.1 sec ±0.05 sec |
| Phase-Loss | 0.1 sec max. (When voltage suddenly changes from 100% → 0% of rated voltage) | |
| Reset Method | Automatic reset | |
| LED Indicators | PWR: green, RY: yellow | |
| Output Format | 1 c contact output (normally closed operation) | |
| Output Contact Rating | Rated 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 Humidity | Relative Humidity 25 to 85% (assuming no condensation) | |
| Storage Humidity | Relative Humidity 25 to 85% (assuming no condensation) | |
| Altitude | 2,000 m max. | |
| Terminal Screw Tightening Torque | 0.49 to 0.59 N·m | |
| Terminal Wiring Method | Recommended 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 Color | N1.5 | |
| Case Material | PC UL94-V0 | |
| Weight | Approx. 60 g | |
| Mounting | DIN track mounting | |
| External Dimensions | 17.5 (W) × 80 (H) × 74 (D) mm | |
Performance
| - | K8DS-PH1 | |
|---|---|---|
| Input Voltage Range | 200 to 480 V AC | |
| Input Frequency | 50/60 Hz | |
| Overload Capacity | Continuous 500 V | |
| Phase Loss Detection Level | 80% 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 Standards | Approved Standards | EN60947-5-1 Installation environment (pollution level 2, installation category III) |
| EMC | EN60947-5-1 | |
| Safety Standards | UL508 (Recognition), Korean Radio Waves Act (Act No. 10564), CSA C22.2 No. 14, CCC: GB14048.5 | |
| Insulation Resistance | 20 MΩ min. Between external terminals and case Between input terminals and output terminals | |
| Dielectric Strength | 2,000 V AC for 1 min Between external terminals and case Between input terminals and output terminals | |
| Noise Resistance | 1,500 V power supply terminal common/normal mode Square-wave noise of ±1 μs/100 ns pulse width with 1-ns rise time | |
| Vibration Resistance | Frequency: 10 to 55 Hz, 0.35-mm single amplitude, 10 sweeps × 5 mins each in X, Y and Z directions | |
| Shock Resistance | 100 m/s2, 3 times each in 6 directions along 3 axes | |
| Protective Structure | Terminals: IP20 | |
Relationship of Mounting Distance between K8DS-PH Relays and Ambient Temperature (Reference Values)
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.
Test sample: Model K8DS-PH
Distance between product: 0 mm, 5 mm, 10 mm min.
Connection
Note 1: Use the recommended ferrules if you use twisted wires.
Wiring example
- *See the catalog for any other specifications, key safety points, usage precautions, warnings, etc.