YB-12/0.4 Outdoor prefabricated substation (European style)

Overview

It is widely used in indoor and outdoor places such as urban power grid transformation, residential quarters, high-rise buildings, industrial and mining, hotels, shopping malls, airports, railways, oil fields, docks, highways and temporary power facilities.

Conditions of Use

The altitude does not exceed 1000m;

●Ambient temperature: -25%C -+40^C;

Relative humidity: the daily average is not more than 9596, the monthly average is not more than 9096;

●Installation site: There is no fire, explosion hazard, conductive dust, chemical corrosive gas and violent vibration. If the above conditions are exceeded, the user can negotiate with our company.

Functions and Features

Trinity of high-voltage switchgear, transformer and low-voltage switchgear, with strong complete set;

The high and low voltage protection is perfect, the operation is safe and reliable, and the maintenance is simple;

●It occupies less land, saves investment, short production cycle, and is convenient to move;

The wiring scheme is flexible and diverse;

Unique structure: the unique honeycomb structure double-layer (composite plate) shell is solid, heat insulation, heat dissipation and ventilation, beautiful, high protection level, the shell materials are stainless steel alloy, aluminum alloy, cold-rolled plate, color steel plate optional;

●Various types: universal, villa, compact and other styles;

●A network automation terminal (FTU) can be installed in the high-voltage ring network cabinet to realize reliable detection of short circuit and single-phase grounding fault, and has the function of "four forcing", which is convenient for automatic upgrading of distribution network.

transformer

Intelligent-integrated substations use low-loss, oil-immersed, fully-sealed 59, S10, S11 series transformers, and resin-insulated or NOMEX paper-insulated environmentally friendly dry-type transformers. in and out.

high pressure side

Intelligent type - The high voltage of the integrated substation is generally protected by a load switch-fuse combination electrical appliance. After the fuse-phase is blown, the three-phase linkage trips. Equipped with an electric operating mechanism to realize automatic upgrade; the fuse is a high-voltage current-limiting fuse with an impactor, with reliable action and large breaking capacity. The main technical parameters are shown in the table below. For transformers above 800kVA, ZN12, ZN28, VS1 and other vacuum circuit breakers can be used for protection.

low pressure side

The main switch on the low-voltage side adopts a universal or intelligent circuit breaker for selective protection; the outgoing switch adopts a new type of plastic case switch, which is small in size and short in arcing, and can reach up to 30 circuits; intelligent automatic tracking reactive power compensation device with contactor There are two switching methods of contactless and non-contact for users to choose.

Executive standard

This product complies with the following standards:

GB/T17467-1998 "High Voltage, Low Voltage Prefabricated Substation"

DL/T537-93 "Technical Conditions for Ordering 6-35kV Box-type Substation"

Installation, use and maintenance

In addition to the regulations required by the electric power department in the installation, acceptance, handover test, operation and maintenance of the intelligent-integrated substation, pay attention to the following matters:

●Users should check carefully according to relevant regulations when receiving the goods. For products that are not installed immediately, they should be stored in an appropriate place according to the normal conditions of use.

●The product should be hoisted at the bottom of the special sling, as shown in Figure 3.

●The product is placed horizontally on the foundation made in advance, and then the gap between the product base and the foundation is sealed with cement mortar to prevent rainwater from entering the cable room, and the high and low voltage cables are connected through the bottom sealing plates of the high and low voltage rooms.

●Reliable grounding should be done after the product is installed in place; the two main grounding terminals on the channel steel of the power station base, the neutral point and shell of the transformer, and the bottom pile head of the arrester should be grounded by the installation department respectively. All grounding should share a set of grounding devices, and its grounding resistance should be less than 4 ohms;

After the product is installed or repaired, the following items should be inspected and tested before it is put into operation:

Whether the substation is clean:

Whether the operating mechanism is flexible;

Whether the main electrical appliances are flexible and reliable;

Whether the on-off of the electrical auxiliary contacts is reliable and accurate;

Whether the meter and relay action are accurate;

Whether the transformation ratio and wiring polarity of the instrument and transformer are correct;

Whether all electrical installation nuts are tightened, and whether the installation is firm and reliable;

Whether the busbar connection is good, whether it supports the insulator, and whether the clamp is installed reliably;

Whether the setting value of the electrical appliance meets the requirements, and whether the fuse core specification is correct:

Whether the contacts of the main circuit and auxiliary circuit meet the requirements of the electrical schematic diagram.

●Maintenance

All components in the product are maintained according to their respective technical requirements:

If the selected transformer is oil-immersed, the oil sample analysis and inspection shall be carried out at least once a year according to the regulations;

For the high-voltage side switchgear in operation, after 20 times of opening and closing operations with load or 2,000 times without load, the condition of the contacts and the wear degree of the arc extinguishing device should be checked, and the abnormality should be repaired or replaced in time.

After the low-voltage switchgear automatically trips, the cause of the trip should be checked and analyzed, and the operation can only be restarted after the fault is eliminated;

The arrester should be tested once a year before the thunderstorm season;

Note: The product comes with packing list, certificate of conformity, installation and operation manual, electrical wiring diagram and manual of the main components and equipment used in this product, key operation tools and spare parts provided according to the agreement.