Undervoltage Three Phase Voltage Monitoring Relay 5 LED Lights For Status Indication
All electric appliances are very sensitive when using the grid voltage is too high too low, whether industrial equipment or household appliances have a rated voltage, the voltage range is usually specified as 170V-240V (can be seen on the nameplate or instructions of the electrical equipment). If this voltage is exceeded, the insulation strength and pressure resistance of the electric appliance are exceeded, and the electric appliance will thus generate heat, breakdown and burn or even cause a fire. At present, due to the theft of the zero line, aging equipment, technical failures, human failures, natural disasters, power outages, and other reasons, the voltage instability, the voltage is too low, resulting in a large number of electrical appliances are burned out and burned in large areas, People have suffered heavy losses, no claims, and labor and people’s misfortune have come one after another. Yimin’s overpressure, overpressure, and undervoltage protectors (also known as electrical protectors) should be added to prevent electrical fires and protect the safety of lives and property.
■Features:
● Overvoltage protection ● Undervoltage protection
■Application:
The products are widely used in oilfields, mines, and various industrial and agricultural areas.
■ Structural features:
1. The protector base adopts rail type, and two M4 screw holes structure are installed directly or independently.
Rail installation.
2. Indicator light: It is indicated by 3 LEDs: normal, overvoltage, undervoltage.
3. Overall dimensions: 68mm x 30mm x 76mm.
◆ Typical application
● Electric motor ● Fan ● Water pump ● Air compressor ● Crane
● Driving ● Lifts ● Cranes ● Elevators ● Machine tools
● Central air conditioning ● Refrigeration equipment ● Laser equipment ● Industrial control system
◆Selection instructions
JVRD - □ □
1 2
1. Rated voltage: 220,380,440,460,480
2. Over and under pressure code: Empty, A, B, C, T (See the following table)
Empty - Overvoltage + 15%, Undervoltage - 15%
A- Overvoltage +10%, Undervoltage-10%
B- Overvoltage +12.5%, Undervoltage -10%
C- Overvoltage +15%, Undervoltage-12.5%
T- over-voltage value specified by the customer
♦ Technical data
| Type | JVR-384 |
| Input circuit=Measuring circuit | L1,L2,L3 |
| Rated voltage | 220VAC,380VAC 440VAC,480VAC,50/60HZ |
| Monitoring functions | overvoltage,undervoltage |
| Voltage setting range | Overvoltage:+15%,Undervoltage:-15% |
| Voltage hystersis | 5-8% fixed |
| Dielectric strength | 1000000 cycles |
| Reset time | 100ms |
| Indicarors | Phase sequence,phase loss overvoltage,undervoltage,normal |
| Dimension(HxWxD) | 68X30X76mm |
| Output contacts | 1C/O |
| Mounting | Din Rail |
Product Tags:
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Undervoltage Three Phase Voltage Monitoring Relay 5 LED Lights For Status Indication Images
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