北京pk10赛车开奖纪录

ZK800 motor (motor) protection measurement and control device

share to:
2018-09-03 Time: 2018-09-03
Visitors:
2012217785427.jpg
product name: ZK800 motor (motor) protection measurement and control device
Product number: ZK800
Product introduction:

Three-phase AC asynchronous motors (hereinafter referred to as motors) have been widely used in various industries, and it is particularly important to ensure the safe control and economic operation of motors.

The traditional motor secondary control circuit is usually implemented by hard wiring, high cost, complicated control principles and wiring, heavy workload of design, debugging and maintenance, and problems that are difficult to troubleshoot; traditional motor protection mainly uses thermal relays, and the protection range is narrow (cannot Heavy-duty starting motor), low accuracy and reliability, large power consumption, causing a lot of unnecessary economic losses.

ZK800 motor (motor) protection measurement and control device (hereinafter referred to as the device) combines computer technology, control technology, communication technology, and display technology (CRT), and integrates multiple motor starting control schemes for monitoring. The electric parameters of the motor when the motor starts, runs, and is abnormal. Using the microprocessor's fast processing capabilities, the specific motor's rated parameters and user-set time and limit parameters are used to correctly judge and distinguish between the abnormal and fault categories of the motor. , To ensure the safe operation of the motor, and promptly inform the user through Chinese liquid crystal display, lamp instructions, signal output, communication and other forms.

The device is suitable for electric motor application places with a rated frequency of 50Hz, a rated voltage of 380V to 660VAC, and a rated current of 2A to 800A. As a new generation of protection, monitoring and control of low-voltage asynchronous motors and increased safety motors (also used for incoming or feeder lines) Intelligent integrated device. In addition to advanced motor protection and monitoring functions, it also provides important information such as equipment operation and fault records and rated parameters, and adopts a field bus structure, bringing great convenience to modern equipment management; widely used in petroleum, chemical , Power, metallurgy, coal, light industry, textile and other industries.

The use of this product simplifies the traditional motor secondary control and protection circuit, and provides perfect motor control and protection measures. As an intelligent terminal, it can also realize communication networking based on multiple bus methods, and realize distributed control protection and centralized management. . The application of the controller shortens the engineering cycle, greatly improves the design and production efficiency, and reduces the user's on-site debugging and maintenance workload.

This product adopts a modular design. The main body and the dedicated current transformer are installed separately. The product is small in size, compact in structure and easy to install. It can be directly installed and used in various drawer cabinets with 1/4 modulus and above.

Meet the standards: GB3836.3-2000, GB14048.4-2003, IEC255.

details

Main functions and features:

? (AC220V DC220V) ,宽范围输入 (85V 265V) The auxiliary power supply supports AC and DC power supply (AC220V , DC220V) , wide range input (85V ~ 265V) .

? 开入支持干接点输入,可选交流或直流供电。 DI input supports dry contact input, and can choose AC or DC power supply.

? DO 输出支持交流负载或直流负载,同时起动控制 DO 与保护 / 停车控制 DO 分开;信号 DO 用于装置自检或故障报警输出等。 The control DO output supports AC load or DC load. At the same time, the start control DO is separated from the protection / parking control DO . The signal DO is used for device self-test or fault alarm output.

? 每相电流有效值、每相电压有效值、功率(有功、无功)、功率因数、电度、接地故障漏电流、已用热容量、相不平衡百分数、频率、正序电流分量、负序电流分量、开关量输入状态等。 The measurement function is full power measurement, each phase current RMS value, each phase voltage RMS value, power (active, reactive), power factor, power, ground fault leakage current, used heat capacity, phase imbalance percentage, frequency, positive Sequence current component, negative sequence current component, switching input state, etc.

? ( 直接启动、双向启动、双速运行、软启动、星三角启动、双速启动等 ) Support a variety of motor control logic ( direct start, two-way start, two-speed operation, soft start, star-delta start, two-speed start, etc. ) .

? ( 零序 ) 保护、过热保护、过电压保护、欠电压保护、启动超时保护、三相不平衡保护、工艺联锁保护、 TE 时间保护等。 Comprehensive protection functions, including: fast-break protection, stall protection, definite time overcurrent protection, inverse time overcurrent protection, underload protection, leakage ( zero sequence ) protection, overheating protection, overvoltage protection, undervoltage protection, startup timeout protection , Three-phase unbalance protection, process interlock protection, TE time protection, etc.

? The device can automatically identify the forward and reverse running status.

? The protection function can be switched on and off, and the protection parameters can be set on the spot by professionals according to the actual parameters of the motor.

? The contactor can be blocked when there is an extremely large short-circuit current, and the circuit breaker is driven by the control relay to reliably eliminate the fault.

? MODBUS-RTU ,实现数据传输及远程监控功能。 Supports MODBUS-RTU for data transmission and remote monitoring functions.

? It can query the input state of the switch value and the current running state of the motor in real time.

? It can record eight faults and time stamps of the motor to realize fast fault location.

? , 方便用户操作。 Full Chinese menu display , easy for users to operate.

? , 集保护、测量、监视、控制、通信等多种功能于一体。 The functions are highly integrated , integrating protection, measurement, monitoring, control, communication and other functions into one.

? The main product adopts a modular design. The main body and the dedicated current transformer are installed separately. The product is small in size, compact in structure and easy to install. It can be directly installed and used in various drawers.

? In the aspects of anti-vibration and anti-interference, we have carried out careful design and strict electromagnetic compatibility tests to ensure the safe operation of the device and prevent misoperation.

? tE 时间保护 ”符合有关增安型防爆电动机过载保护的国家标准。 " TE time protection " complies with national standards for overload protection of increased safety explosion-proof motors.

? One machine is multi-purpose and can replace ammeter, voltmeter, thermal relay, current transformer, time relay, leakage relay, transmitter, etc.

Product technical indicators:

1. Environmental conditions

a) -25 ℃~ +70 Working temperature: -25 ℃ ~ +70

b) -40 Storage temperature: -40   +85 +85

c) 5% 95% (装置内无冷凝或结冰) Relative humidity: 5% to 95% (no condensation or icing in the device)

d) 80kPa 110kPa Atmospheric pressure: 80kPa to 110kPa .

2.Power

220V ,允许变化范围 80 %~ 110 %。 AC and DC power supply: 220V , the allowable variation range is 80 % ~ 110 %. ,

3.Rated parameters

380V/220V 660V/381V AC voltage: 380V / 220V , 660V / 381V

2A 8 0 0A AC current: 2A to 8 0 0A

50Hz Frequency: 50Hz

4.Power consumption

2VA Rated power consumption: 2VA

3VA Maximum power consumption: 3VA

5, overload capacity

AC current loop: 倍额定电流,连续工作; 2 times rated current, continuous work;

倍额定电流,允许 10s 10 times the rated current, allowing 10s ;

AC voltage loop: 倍额定电压,连续工作; 1.4 times rated voltage, continuous work;

倍额定电压,允许 100S 1.6 times the rated voltage, allowing 100S ;

6.Protection error

<1% Error <1%

7.Measurement level     

0.5 Current and voltage: 0.5 level

1.0 Other power: 1.0 level

PT CT 的测量精度有很大的关系 Note: The measurement accuracy has a great relationship with the measurement accuracy of the PT and CT selected by the user

8.Relay output

AC250V/5A,DC30V/5A Power relay: AC250V / 5A, DC30V / 5A

9, switch value input

2000VAC.rms Dry node access mode; optocoupler isolation: 2000VAC.rms

10.Communication port

Interface Type: RS-485

Communication speed:   1200-9600bps

Protocol: Modbus RTU

11. Electrical insulation characteristics

l 50Hz ,电压 2kV( 有效值 ) ,历时 1min 试验,而无绝缘击穿或闪络现象。 Dielectric strength : The dielectric strength of all the circuits and the shell of the device can withstand AC 50Hz , voltage 2kV ( effective value ) , and last 1min test without insulation breakdown or flashover.

l 100M Insulation resistance : The insulation resistance between all circuits of the device and the case is not less than 100M 标准 under standard experimental conditions .

l EMC )特性 Electromagnetic compatibility ( EMC ) characteristics :

GB/T14598.9 的规定。 Radiation electromagnetic field interference test: in accordance with the national standard GB / T14598.9 .

GB/T14598.10 的规定。 Fast transient interference test: in accordance with the national standard GB / T14598.10 .

GB/T14598.13 的规定。 Pulse group interference test: in accordance with the national standard GB / T14598.13 .

GB/T14598.14 的规定。 Anti-static discharge interference test: In accordance with the national standard GB / T14598.14 .

Product Image:

ZK800 motor (motor) protection measurement and control device.png