• MRD-L Zero-sequence CT  (equiped with relay protector or signal devices) System 1
MRD-L Zero-sequence CT  (equiped with relay protector or signal devices)

MRD-L Zero-sequence CT (equiped with relay protector or signal devices)

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1 unit
Supply Capability:
1000 unit/month

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Zero Sequence Current Transformer

 

Product Overview

When circuit grounds, CT could senses zero-sequence grounding current. To be equiped with relay protector or signal devices, it help device components act for the purpose of protecting or monitoring circuit.

MRD-L series zero-sequence CT is a kind of cable type, using ABS engineering plastics as casing, poured by resin. With beautiful appearance, good hermeticness, high insulation, high sensitivitym, good linearity, easy installation and wide application, it is not only suitable to magnetic relay, but also to electronics and mico-computer devices. CT type is determined by the operation way of user.(Neutral ground, unground,ground by high-resistance,low resistance or arc suprression coil.)

MRD-L series zero-sequence CT core is made of ZH120-130 cold rolled silicon steel sheet imported from Japan with advantages of smooth surface, constant thickness, good conductivity, strong sensitivity to magnetizing, accuracy and stability.

 

 

Inner Diameter (select site cable and inner diameter of zero-sequence CT), See table1

 

Table1

 

0-sequence CT Spec.

Cable Section(mm2)

φ80

50 and below

φ100

70     3×95

φ120

120  3×150  3×185

φ140

(3×150)  3×240  3×300

φ160

(3×185)

φ180

(3×240)

φ200

(3×185)

φ240

(3×240)  2×(3×300)   4×(3×185)

Character

1. Maximum capacity, better limite voltage effect, more widely applicable scope, stronger tolerance , long lifespan

 

2. Voltage impact coefficient is 1, under the various kinds of electric voltage waveform, the voltage values are equal

 

3. With zinc oxide nonlinear resistors and discharge gap between the structure, make the two are complementary protected. The spark gap make the State-of-Charge of zinc oxide resistance to zero, Zinc oxide resistance nonlinear characteristics also make the spark gap action without free-wheeling in future, The spark gap no longer bear arcing tasks, and improve the service life of the product;

 

4. Four lines connect method, can be greatly reduce the voltage of phase, the reliability of the protection is greatly improved;

 

5. Valve plates and the spark gap assemble space, and mutual influence, discharge electrode is not easy to damp, be oxidated, make action value more stable and reliable.

 

6.Take overvoltage action techniques and fault automatically function , realize the device maintenance free, at the same time, to avoid the tedious work periodically, to solve the engineering and technical personnel to worry about the problems of the equipment safe running .

Packaging

Selling Units:Single item
Single package size: 15X40X40 cm
Single gross weight:35.0 KG
Package Type:CARTON

1. We are willing to customize for each new product

2. Supply all the components and accessory of High Voltage Switchgear

3. Yueqing Hossin Electrical Co., Ltd. is prosperously specialized in the production of high voltage electrical products. Our leading products include vacuum circuit-breakers, sulfur hexafluoride circuit breakers, arresters, current limiting fuses, load switches, isolators, operating mechanisms, wall drive pipes, and insulators. Our products have passed through ...

Basic Information

Product/Service (We Sell):Arrester,drop fuse,limiting fuse,disconnector,load switch  
Number of Employees:501 - 1000 People  

 

Q: What are the characteristics of the grounding of the power system and equipment?
The grounding - is the need for work and set up the ground, such as: high current transformer neutral point grounding, primary voltage transformer neutral grounding, 380/220V three-phase four wire neutral grounding, etc..
Q: What is the meaning of the high - voltage high - voltage device in power system, which is mainly used to protect the equipment and equipment
The high cycle is high frequency, rated frequency of power system in China is 50Hz, the normal range was 49.8~50.2Hz, under normal circumstances, the power dispatching department through power planning, automatic control and other means to achieve power generation and load demand power balance. In the event of an accident, the balance can not be controlled by these means,
Q: What is the specific name of the double name of the equipment in the electric work sheet? Know please enlighten me.It would be better if you had a sample ticket.
Such as: 307DL. The device name is on the circuit breaker, numbered 307DL, together they should write off on the line: circuit breaker 307DL
Q: In order to ensure the normal operation of the power system and equipment to achieve a grounding
1) work: grounding is to ensure electrical equipment in normal or accident conditions reliably, the neutral point directly or through special equipment (such as Petersen coil, reactor, resistance, breakdown insurance, etc.) do metal and earth connection.
Q: Electric power equipment includes what steam turbines are used in what areas of what companies need steam turbines
Power equipment including: boiler, steam turbine, pump, deaerator, condenser, generator and so on, from the impact of steam boiler turbine blade hot out of the turns, then drives the generator to rotate to generate electricity, in general, now in thermal power plant and a large Shipping Co to use steam turbine
Q: In order to obtain the qualification test of power equipment, the company needs to have a hard condition
The provincial electricity supervisor application; can only apply for five (10KV and below) or level Four (35KV and below) qualification, the first level of qualification can only apply for the first four to rise
Q: I would like to ask the power experts, according to the annual additional electricity, installed capacity, how to calculate the amount of the necessary supporting power equipment, etc.?
In accordance with the annual increase of 90 million to consider the installation of the words, basically belong to the Chinese power market
Q: What is the meaning of the high - voltage high - voltage device in power system, which is mainly used to protect the situation,
High frequency means high frequency, the rated frequency of the power system is 50Hz, the maximum range of 49.8~50.2Hz, under normal circumstances, the power dispatching department will be developed through the power generation plan
Q: What principles should be followed in power equipment maintenance
(2) the maintenance plan shall be arranged according to the unified arrangement of the power grid to improve the coordination and reduce the outage time of the equipment,. Improve operation reliability and equipment availability.
Q: Power equipment is required to replace the dimension, the state has no relevant provisions
This depends on the provisions of the local power supply department, generally not mandatory requirements.

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