Gang electric - GCS low-voltage withdrawable switchgear

Product overview
Type GCS low-voltage withdrawable switchgear (hereinafter referred to as device) is two joint design according to the department in charge of industry, the requirement of the factory go power users to engage in design units Man meter developed accord with national conditions, with high technical performance indicators and can adapt to power market development needs and can compete with the introduction of existing product low voltage draw-out switch cabinet.The device has been widely use electricity users.
Device is suitable for the power plant, petroleum, chemical, metallurgical, textile, power distribution system of high-rise building and other industries.In power plants, petrochemical systems such as high degree of automation, requirements and computer interface, as the frequency of the three-phase ac 50 Hz (60), the rated working voltage of 380 v, (660), the hair under the rated current is 4000 a, power supply system of power distribution, centralized control of the motor, reactive power compensation using low-voltage power distribution equipment.The device of the basic organization form see figure 1.

The design of the device meets the following criteria:
1, IE6439-1 "low-voltage complete switch and control equipment"
2, GB72511-2005 "low-voltage complete switch equipment"
3, JB/T9661-1999 "low-voltage withdrawable switchgear

Model and meaning

Conditions of use

1, indoor use, use the site shall not exceed 2000 m altitude;
2, ambient air temperature is not higher than + 40 ℃, no less than 5 ℃.The average temperature is not higher than + 35 ℃ for 24 hours.Beyond, should be according to the actual situation let run.
3, the surrounding air relative humidity when the highest temperature is + 40 ℃ not more than 50%, at low temperature are allowed a larger relative humidity, such as + at 20 ℃ at 90%, should be considered due to the change in temperature may accidentally condensation effect.
4, equipment installation and the inclination of the vertical plane was less than 5 ℃, and the whole tank column relatively flat (operator GBJ232-82 standard).
5, the device should be installed in no violent vibration and impact, and enough to reduce components are not due to corrosion.
When users have special requirements.You can negotiate with factory to solve.

The main technical parameters

Main circuit scheme

Switchgear main circuit scheme, a total of 32 group 11 eight specification (see table 2), not including due to changes in the control of the auxiliary circuit and protection, derived the plan and specification.Including power generation, power supply and other power users' needs, ShuDing working current is 4000 a, suitable for distribution transformer of 2500 kva and below.
In addition, to power supply should increase the power factor and design the capacitor compensation ark, considering the need of the comprehensive investment reactor were designed in the cabinet.

Auxiliary circuit scheme
GCS auxiliary electric version) can be divided into two parts of the dc operation and communication operation.Dc operation part of the auxiliary circuit is mainly used for power plant substation factory (the) using system of low pressure.Suitable for 200 mw and below and low pressure factory with 300 mw and above capacity unit system, work (standby) power supply into line, the general control mode and electric power feeder feeder.
Communication operation of auxiliary circuit is mainly used in factories and mines enterprises and substation low pressure system of high-rise building.Suitable for double power supply control combination operation.No electrical interlocking reserve since the operation, since the complex control circuit, etc.
Control power supply for dc 220 v or 220 v dc, ac control power for ac 380 v or 220 v, composed of drawer units complete cabinet.220 v power supply from the ark set up control common control power supply transformer power supply, public control not grounding method are adopted in control transformer, with 24 v power supply is used when need to use the weak current signal lamp.

Structural characteristics of
1, unit 8 mf steel is used in the main frame, frame adopt assemble and weld Shan points two kinds of structure forms.Are installed on the main frame modulus E = 20 mm holes.
2, installation strictly separate each function room, the main compartment is divided into functional unit rooms, bus room, cable room, the function of each unit are relatively independent
3, the device the size of the cabinet put oneself in another's series such as table 2

Install and use

Product arrived at the place of receipt, first of all, should check whether the packaging is intact, found that the problem should be timely notify with relevant departments of business records, analysis of common cause, to prepare for visa and post-processing.For installation of the product immediately.According to normal conditions of use and electrical equipment for temporary custody regulations requirements at the appropriate place.Safekeeping.

1, the installation of the product shall be carried out according to the diagram (see figure 1 to figure 3, table 6 ~ 8).Channel steel and using bolt fixed way of own by the user.Mistress line connection, such as surface caused by the uneven reasons such as transportation, keeping to level off after fastening connection.
2, device alone or as a column installation, its verticality and counter crack deviation between roughness and ark conform to the requirement of table 6.

Using the matters needing attention
1, the device installation is without wall, positive action, surface maintenance of low-voltage distribution cabinet.Tank maintenance access and cupboard door, must be the inspection qualified professional person can enter or open operation, check and repair.
2, air circuit breaker, molded case circuit breaker through most of the points, stage, especially after short circuit points and.Contact local burns and causes carbon material, increased contact resistance, should according to the circuit breaker operating instructions for maintenance and repair.
3, after installation and maintenance, must strictly check each compartment, segregation between functional units, to ensure that this device good function space, preventing further failure.