PRODUCTS
Jiangyin Spark Electronic Technology Co., Ltd

Our Products

Company news

Number of views:
1000

Secondary Transformer-Current Type Voltage Transformer

Retail price
0.0
Market price
0.0
Number of views:
1000
Product serial number
Quantity
-
+
Stock:
Product description
Parameters
Usage
*Occasion of use: Generally used in instruments and meters with high space requirements for testing voltage, electric energy and power;
*Principle of use: Primary and secondary 2 mA: 2 mA current, primary series resistance, secondary parallel resistance test voltage;
*Product features: high test accuracy and small size.
 
Technical
*Withstand voltage rating:2 / 3 KV;
*Rated frequency:50 / 60 HZ;
*Flame retardant properties:UL 94 - V 0;
*Use environment:- 25℃-50℃。
 
img

Product specifications

Iin

Io

Rb

Overload multiple

20%-120%

 

 

 

 

 

F

 

TV/A2-2E

2mA

2mA

100

4

0.2

30

HPT225A

2mA

2mA

100

4

0.2

30

TV/A2-2C

2mA

2mA

100

6

0.1

30

 

typical application

typical application

Case1:
The typical application circuit is shown in Figure 1, and the secondary load is basically zero. The measured input voltage VIN is limited by the current limiting resistor RIN, and the generated 0-2 mA current passes through the miniature voltage transformer. The transformer senses the same 0-2 mA through the operational amplifier
, The user can adjust the value of the feedback resistor R to get the required voltage output at the output. The capacitor C and resistor r are used to compensate the phase difference. If the user uses software compensation or does not need to compensate the phase difference, the capacitor C and the resistor r can be disconnected. The operational amplifier in the figure is a general-purpose operational amplifier. The accuracy of the feedback resistor R and the current limiting resistor RIN are related to the accuracy requirements of the output voltage, D 1
, D 2 diode is 1 N 4148 for protection. C 0 is an anti-interference capacitor, which is determined according to the user's circuit and operational amplifier technical parameters, otherwise it will cause the output signal to oscillate. The current limiting resistor RIN is selected as RIN= VIN/ 2 m A- r 0 (internal resistance of the transformer)。
 
Case1:
Case2:
Figure 2 shows the direct output circuit of parallel resistor R. The resistor R is not more than 500 ohms (the output voltage is 1.0 V maximum), and the secondary load is R. The phase difference of the direct output circuit becomes larger due to the large load, and the linearity becomes worse. Suitable for occasions with low requirements. C in Figure 2 can play a role in phase compensation, and it can be omitted if there is no phase requirement. The compensation amount RIN is selected RIN= VIN/ 2 m A- r 0 (internal resistance of the transformer:Δδ= - 100 π CR× 3438 ’。
 
mount
The narrow leg is a winding, input and output are not distinguished, and can be blind inserted;

The narrow leg is a winding, input and output are not distinguished, and can be blind inserted;

 

Order requirements
You only need to choose the size, shape and overload multiple to choose the model. If you have special needs, you can customize。
 

mount

We could not find any corresponding parameters, please add them to the properties table
Previous
Next

MORE PRODUCTS

 KN standard busbar
KN standard busbar
 KN for Jiangsu Provincial Network
KN for Jiangsu Provincial Network
 T Series Split Core Current Transformer
T Series Split Core Current Transformer
 KNUL2808 series
KNUL2808 series

Tel:+86-0510-86271733

Add:No.263, East Outer Ring Road, Jiangyin City, Jiangsu Province, China

website

-Mobile website-

苏ICP备11016088号    Power by 300.cn

Copyright © 2020 Jiangyin Spark Electronic Technology Co., Ltd