The basic principle of zero sequence current maintenance is based on Kirchhoff's current law: the algebraic sum of the complex current flowing into any node in the circuit is equal to zero. When the circuit and electrical equipment are normal, the vector sum of each phase current is equal to zero.... read more
The miniature current transformer occupies an important position in the power supply system. Its basic structure is composed of iron core, primary winding, secondary winding, terminal and insulating support. The primary winding of the current transformer has few turns and is connected in series in... read more
1. Rated working voltage: refers to the voltage required by the coil when the relay is working normally. Depending on the model of the relay, it can be AC voltage or DC voltage. 2. DC resistance: refers to the DC resistance of the coil in the smart home relay, which can be measured by a universal... read more
1. Mechanical physical parameter requirements:Ensure the use and installation size, weight, tightness, strength and solderability of the lead pins of the product. Including: contact pressure, contact gap, contact tracking, restoration reed pressure, armature stroke, nail height and other mechanical... read more
A current transformer is a device used to measure alternating current. For example, in the process of power generation or transmission, the alternating current of different equipment can be converted into the required current of tens of amperes to tens of thousands of amperes. It can not only monito... read more
Manganese-bronze shunt is a precision resistance element used to make high-level measurement voltage, current, bridge, potentiometer and other instruments and meters, and it is more suitable for making standard resistor elements for reference. The manganese-copper shunt (manganese-copper sampling r... read more
A current transformer is an instrument that converts a large current on the primary side into a small current on the secondary side based on the principle of electromagnetic induction. The current transformer is composed of a closed core and windings. Its primary winding has a few turns and is strin... read more
GRT508B 100A GENERAL PURPOSE SINGLE PHASE LATCHING RELAY. It has an interactive relationship between the control system (also called the input loop) and the controlled system (also called the output loop). Usually used in automated control circuits, it is actually an "automatic switch" that uses a s... read more
The new type of relay refers to the electromagnetic relay developed and produced in order to meet the new special requirements and meet the use under special environmental conditions. Its main characteristics are small size, light weight, vibration resistance, shock resistance, and load range from ... read more
Copyright © Zhejiang Great Electrical Co., Ltd. All Rights Reserved.
