Earth fault directional relay Undervoltage relay
Hikari Shoko Co., Ltd.
About This Product
■Features
・A microcomputer is used in the electronic circuit.
- High reliability as it has a self-diagnosis function.
・You can select whether or not the output contact operates during the operation test using the test switch.
・The reset switch is structured so that it can be pressed from above the cover.
- Since it is a plug-in type, the relay elements can be replaced without changing the wiring on the back side.
- Changed to a resin case and is now RoHS compliant.
■Operation
When VT secondary voltage is applied to LOV-2A or LUV-2A, it is input to the internal control power transformer and detection transformer. The power supply circuit rectifies the input voltage, converts it to the specified voltage, and then supplies power to each circuit. On the other hand, the signal voltage converted by the detection transformer is input to the rectifier circuit and then input to the CPU.
In the case of LOV-2A, it is determined whether the input signal has reached the voltage setting value or higher, and if it is higher than the voltage setting value, the operating time is counted, and when the operating time setting value is reached, the output contact and the Make the display work. In the case of LUV-2A, it is determined whether the input signal has reached the voltage setting value or less, and if it is below the voltage setting value, the operating time is counted, and when the operating time setting value is reached, the output contact and the Make the display work.
■Self-diagnosis function
Monitors the detection signal and checks the input circuit.
・Operation of self-diagnosis function
The detection signal (input voltage, frequency) is constantly monitored after input voltage is applied.
・Operation when an abnormality is detected
When the abnormal condition of the input circuit continues for 60 seconds, the monitoring status will be stopped and the abnormality indicator light (red) will blink. Also, when the abnormality is removed and the normal state continues for 30 seconds, the system returns to the monitoring state and the abnormality indicator light (red) turns off.
■Features
- High reliability as it has a self-diagnosis function.
- Compliant with "JEC 2511 Voltage Relay".
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Product
Earth fault directional relay Undervoltage relay
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Handling Company
Hikari Shoko Co., Ltd.
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Categories
1 Models of Earth fault directional relay Undervoltage relay
| Product Image | Part Number | Price (excluding tax) | Abnormal display | Ambient temperature | Commercial frequency withstand voltage | Elevation | Exterior color | Frequency | Insulation resistance | Mass | Operating time setting value | Operating time tolerance | Operating value tolerance | Operating voltage setting value | Operation display Display method | Operation display Return method | Output contact closing capacity | Output contact configuration | Output contact open circuit capacity | Output contact return method | Power consumption Always | Power consumption during operation | Power display | Relative humidity | Test method | Voltage |
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LUV-2A |
Available upon quote |
Light emitting diode display (red) Automatic return method |
-20℃~+60℃ |
Between the electric circuit and the outer box AC2,000V for 1 minute |
2,000m or less | Munsell symbol N1.5 | 50/60Hz |
Between the electric circuit and the outer box 20MΩ or more with DC500V megger |
Approximately 1.5kg | 0.1-0.2-0.5-1.0-1.5-2.0-2.5-3.0-4.0-5.0 (s) |
Within ±10% of the set value (operating time class 10T) However, if it is 0.2s or less, it is ±50ms, and there is a sudden change from the rated voltage to 70% of the operating voltage setting value 100V. |
Within ±5% of the set value (operating value class 5V class) | 60-65-70-75-80-85-90-100 (V) | Mag sign display (during operation: orange) | Manual return method |
30W (maximum voltage DC110V, maximum current 1A) 1,000 times (L/R=25ms) AC220V 1A 1,000 times (COSφ=0.4) |
1a,1c |
DC220V 10A 1,000 times (L/R=0ms) 0.5s DC110V 15A 1,000 times (L/R=0ms) 0.5s |
Automatic return method | 1.8VA (at AC110V) | 1.6VA (reference value, at AC100V) | Light emitting diode display (green) | 30~80% | Test switch | AC110V |
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About Company Handling This Product
- Japan