Taihua Electronic Motor Protector  AS-21N Three-phase monitoring

Short Description:

The Taihua Electronic Motor Protector AS-21N is a cutting-edge product that delivers excellent three-phase motor protection against overload, phase loss, and phase unbalance. The device is equipped with advanced features that make it highly efficient, reliable, and easy to use, making it ideal for various industrial applications where motor protection is critical.One of the most notable advantages of the AS-21N is its ability to monitor and protect against three-phase faults effectively. The device continuously monitors the motor’s electrical signals to detect any overloads, phase imbalances, or phase loss. When a fault is detected, the device quickly responds by tripping the motor, effectively preventing further damage.Another critical benefit offered by the AS-21N is its advanced protection against short circuits and overcurrent conditions. The device has adjustable overcurrent settings that allow users to customize it to the specific requirements of their industrial applications. Additionally, the device’s inverse time characteristics allow it to respond quickly to different levels of overcurrent and minimize motor damage in the event of an overload.Furthermore, the AS-21N has been tested and proven to be highly reliable in even the harshest industrial environments. It boasts advanced anti-interference technology that filters out unwanted electrical signals, ensuring the device operates smoothly without any false trips.In addition to these features, the AS-21N comes in a compact and easy-to-use design, making it simple to install and operate. The device is highly efficient, reducing energy consumption and operating costs in the long run.In summary, the Taihua Electronic Motor Protector AS-21N is an exceptional device that provides reliable and efficient protection against overload, phase loss, and phase unbalance for three-phase motors. Its advanced features, superior reliability, and user-friendly design make it an ideal choice for any industrial application that requires highly effective motor protection.


Product Detail

FAQ

Product Tags

Features

●Conform to GB/T14048.4 and many other national or industry standards.
●Three-phase electronic type, the trip level is 30.
●Possess current phase failure and overload protection functions, sensitive phase failure protection, reliable operation, and anti-interference ability Strong, set current value and overload delay are continuously adjustable; and have good inverse time characteristics and other advantages point.
●The main circuit adopts the core-through current sampling method, combined with advanced electronic (integrated circuit) circuits.
●Installation method: socket type, Din-rail type installation.

Model Number Structure

productDGDSG

(1) Company code

(2) Motor protector

(3) Current sampling type (active type)

(4) Design serial number (specification code)

(5) B: Overload alarm (buzzer)

N: With work/test transfer switch

Main technical parameter

Working power AC380V、AC220V  50Hz;The allowable voltage fluctuation range is (85%-110%) Ue
Adjustment method Online current adjustment by potentiometer
Output control contact AS-21:a group of NC contactAS-22:Change over contact 1Z
Reset mode Power off reset
Contact capacity AC-12,Ue:AC380V, Ie:3A
Mechanical life 1×105 time
Electrical life 1×104 time

Installation

AS-21:Device type/din railtypeAS-22:Device type

 

Rated working current

Model

Setting current range

(A)

Suitable motor power

(kW)

Minimum sampling current

(A)

AS-21□(JD-5□)

0.5~5

0.25~2.5

≥3

AS-21□(JD-5□)

3~30

2~15

AS-21□(JD-5□)

1~100

0.5~50

AS-21□(JD-5□)

20~100

10~50

AS-22□(JD-6□)

63~400

30~200

10

 

Comparison Table of wire core threading

Motor Power(kW)

Corresponding setting current(A)

Core-threading turns (turns)

0.25~0.5

0.5~1

12~6

0.5~1

1~2

6~3

1~3

2~6

3~1

≥3

≥6

1

 

Overload Action Time Characteristics

Trip level

Different current multiples and action time PT

1.05Ie

1.2Ie

1.5Ie

7.2Ie

2

Tp:no  action  

within  2  hours

Tp:action  

within  2  hours

Tp≤1min

Tp≤4s

5

Tp≤2min

0.5s<Tp≤5s

10(A)

Tp≤4min

2s<Tp≤10s

15

Tp≤6min

4s<Tp≤15s

20

Tp≤8min

6s<Tp≤20s

25

Tp≤10min

8s<Tp≤25s

30

Tp≤12min

9s<Tp≤30s

 

Anti-time characteristic diagram of overload protection

图片 1

 

Application circuit example

productDGSDGDGS

AS-21/AS-21B Circuit diagram

productDGDSG

AS-22 Circuit diagram

Outline and installation dimensions

AS-21/AS-21B appearance and installation dimensions

productDGDSF
图片 2
productDGSDG

AS-22 appearance and installation dimensions

productDGSDAF
productDGDSF

Application

1productDG
3productDG
4productDG

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