Sequence Failure Three Phase Voltage Monitoring Relay JVR800-1 For
Refrigeratin
This product is a kind of intelligent multi-function monitoring and
protection instrument, which integrates the functions of the timer
and voltage display, over voltage and under voltage protection,
phase loss protection and phase sequence protection. It adopts
powerful microprocessor chip and non-volatile memory technology. ,
Chinese LCD display, intuitive and easy to operate. It can record
operating parameters such as working time, number of failures,
failure times, etc., real-time display of the power supply voltage,
and automatically cuts off the power supply when overvoltage,
undervoltage, phase loss, and fault of the three-phase power supply
occur.
It is suitable for real-time monitoring and protection of central
air conditioners, cranes, refrigeration equipment, compressors,
distribution boxes, lifts, various passenger and cargo lifts,
cranes, cranes, and machine tools, etc., and accumulates the number
of equipment startups and running time. At the same time, the power
supply of the device can be monitored, and when the power supply is
abnormal, the power supply is cut off, and the number and
cumulative time of the power supply failures are recorded.
Dimensions: 80H×40W×54D
caveat! This product is generally the power supply side of the
three-phase power supply sampling, shall not be installed in the
output side of the inverter current!
Alarm function
When the power supply is over-voltage, phase-missing or error-free,
the LCD flashes the words “overvoltage”, “undervoltage”, “phase
loss”, and “phase error”, and the relay output contacts are
disconnected. Accumulated faults and faults can be accumulated.
1. The relay output is closed when the meter is working properly,
and it is disconnected when the meter loses power or is in a fault
protection state.
2. The counting signal is voltage signal, the voltage grade is
divided into: DC/AC24V, DC/AC110V, DC/AC220V (for other voltages
can be customized), AC and DC can be, if it is DC voltage should
pay attention to the positive and negative polarity.
Features:
- Mircroprocessor technolony provides highly accurate and repeatable
protection
- Built-in LCD and keypad afford a precise digital setting
- Compact modular 43mm housing
- Adjustable over-and unervoltage ,voltage hysteresis
- Independent adjustable delay time for
overvoltage,undervoltage,phase loss and phase sequence
- Automatic reset
- 1NO&1CO contacts
- Failure recording
- Timing and counting
Protective Functions
- Phase loss(Failure)
- Phase sequence(reversal)
- Undervoltage
- Overvoltage
Applications
- Pumps
- Fans
- Refrigeratin units
- Blowers
- Motors
- Compressors
- Lifits,Elevators
- Cranes
- Mining excavators and conveyors
| Rated supply voltage | 220-450VAC |
| Operating range | 200-500VAC |
| Operating frequency | 50/60HZ |
| Max counting capacity | 999999 |
| Max timing capacity | 9999H59M |
| Max counting frequency | 5HZ |
| Totaltiming error | ≤0.001% |
| Counting input signal | AC/DC 100-300V |
| Measurement error | ≤1% with adjustabke voltage range |
| Automatic reset time | =tripping time |
| Data retention time | 10 years |
| Output type | 1NO&1CO |
| Contact capacity | 6A,250VAC/30VDC(resistive load) |
| Degree of protection | IP20 |
| Working conditions | -25℃~65℃,≤85%RH,non-condensing |
| Mechanical durability | 1000000 cycles |
| Dielectric strength | >2KVAC 1min |
| Weight | 130g |
| Dimensions(HxWxD) | 80x43x54mm |
| Mounting | 35mm DIN Rail |
