The 513 series residual current transformer is mainly used in low-voltage power distribution such as 380V and 660V, or in drawer cabinets with relatively high density, to continuously detect and monitor the residual current at the installation node of the corresponding circuit.
The shell of this series of products is made of environmentally friendly flame-retardant ABS engineering plastics, high magnetic conductivity nanocrystalline soft magnetic materials, and combined with reasonable structural design and rigorous production technology. It has the characteristics of high precision, good balance characteristics, small size, high insulation strength, strong impact resistance, and easy installation. It can work reliably and stably in indoor environments; and in the structural design of the product, according to the customer's usage suggestions, the fixed foot is designed as a built-in structure, which can be hidden in the corresponding fixed foot slot before transportation and installation, and then rotated out when installed, to avoid product failure due to the breakage of the fixed foot before installation, and can reduce packaging and transportation costs.
This series of products has a total of 11 specifications and models, suitable for residual current monitoring of cable loops or copper busbar loops, and the minimum leakage current value can reach 5mA or less, and the accuracy reaches and exceeds the national standard requirements of GB14287.2. The balance characteristics can be designed according to usage requirements.

The product shell color can be produced according to the customer's specified color to meet different color schemes.

Features:

*There are many specifications and varieties, and the applicable current range is large.
*Strong overload capacity, can be overloaded for a long time at 50 times the rated current.
*Excellent balance characteristics, small-size products meet the detector alarm threshold 30mA requirements
*High accuracy: 0.5/1.0/3 levels of accuracy are optional
*Compact design, small size, beautiful appearance
*Strong versatility and good interchangeability

Naming:

Color code:
0: black; 3: red; 6: blue; 8: gray;
The shell color specified by the customer is coded and classified according to the main color of the color system;
Structure and composition:

Electrical Schematic:

*The primary current IP flows in from the P1 terminal and out from the P2 terminal; the secondary current flows out from the S1 terminal and flows in from the S2 terminal.
*Generally, current transformers use the same name relationship of the reduced pole, that is, the secondary output terminal and the primary input terminal are the same name terminals to indicate the relationship between the primary and secondary currents.
*The output current signal of the secondary side of the residual current transformer is generally small. It is recommended to use the current output method to improve the anti-interference ability as much as possible.
*IP*N1=IS*N2, the general primary rated current is 1A, the secondary rated current is 0.5mA, or other parameters are specified according to the equation; Ip is the vector sum of the currents of each cable in the residual current transformer window loop, and has no great correlation with the current size of the loop cable.
*The product contains a voltage clamping circuit, and the effective value of the clamping voltage is 1.4V, which can be changed according to the customer design during production.

Normal use and installation conditions:

Installation location: Indoors.
Ambient temperature -10℃~＋40℃.
Ambient humidity Relative humidity is not more than 80%.
Altitude Not more than 3000m.
Atmospheric conditions There is no serious pollution, corrosive and explosive media in the atmosphere.
No environment with significant frequent vibration and impact.
Storage temperature -20℃~＋75℃.
General technical indicators:

When the residual current transformer passes the corresponding sinusoidal AC current, its output sampling value voltage should meet the requirements in the following table.

R=1000Ω   C=0.022μF   Current source frequency: 50-60Hz; accuracy better than 0.1%; voltmeter AC mV sampling accuracy better than 0.1%.

Balance characteristic parameters:

Product size corresponding chart: