Transformer FTP

Contents

Contents

Licenses and certificates of conformity "STANDARD ELECTRO-S"

2-

1. Introduction

2. Purpose and Scope

3. Technical data

8,

4. FTC design

10-

5. Electrical equipment of FTP

13-

6. Ensuring the safety of FTP maintenance

7. Installation and installation of FTP

8. Configuration of FFCP

9. KTP Order in Plant

24,

Typical electrical diagrams and layout of FTP equipment

26-

Grounding

General views and sections of FTP

54-

Sections of KTP cable units

58,

Typical electrical diagrams and equipment layouts BRP-1, BRP-1

60-

General views and sections of BRP-1, BRP

63,

Foundation slab plan

KTP Order Form

Counterparty Information

Complete transformer substations of full factory availability

Introduction

The album contains information about complete transformer substations (KTP) of full factory readiness in volumetric reinforced concrete blocks, single-line electrical diagrams, equipment placement options inside the blocks and the main technical and installation characteristics of the used equipment. The album also contains the information necessary to issue an order for the manufacture of a transformer substation at the plant.

CJSC EZOIS produces KTP with transformers with a capacity of 25 kVA to 1000 kVA.

Characteristic features of the FTC:

The underground-basement part is a volumetric reinforced concrete cable block installed on the prepared foundation from a monolithic reinforced concrete slab, designed to insert cable lines and lay connecting cable bridges;

the ground part is a volumetric reinforced concrete block installed on the cable unit, designed to accommodate electrical equipment, which allows various versions of external finishing;

application of modern, reliable and safe equipment in operation;

compliance with international environmental standards ISO 14001;

full factory readiness;

simple design and easy installation;

small dimensions;

high strength at relatively low weight of blocks;

the possibility of developing an individual solution for each object;

compliance with the Russian certificate of the GOST R system, ENERGEERT and the international certificate ISO 9001;

compliance with requirements of GOST 1469580, GOST 1469390, specifications and design documentation;

availability of the Russian Gosstandard Standard C compliance certificate.

Purpose and Scope

KTP of EZOIS ZAO are used to receive, convert and distribute electric energy of three-phase AC voltage up to 20 kV with a frequency of 50 Hz and are designed to power urban housing, public and industrial facilities, as well as individual development zones and cottage villages according to one-, two-beam or loop schemes.

In one volumetric unit, both a pass-through and a dead-end FTC can be manufactured.

In the case of dual-beam or loop power supply circuit, the FTP is performed in two units with the device for automatic switching on of the standby power supply on the low voltage side (0.4 kV) or on the high voltage side (6, 10 or 20 kV).

On the 6, 10 or 20 kV side, the FTC has the ability to connect power cables with both impregnated paper insulation and sewn polyethylene insulation with a cross section of up to 240 mm inclusive. CJSC "EZOIS" makes the transition from the air inlet to the cable using a mast attached to the external wall of the FTP (see page 57).

KTP can be complemented with block distribution points (BRP1 and BRP2) of full factory readiness having the specifications and the passport. They are docked to FTP or may be separate and used as:

1. Separate room for accommodation of urban lighting and electric power metering equipment (BRP1).

2. The room for RU0.4 expansion of kV to 16 additional feeders on 400A, 630A and settlement account (BRP2).

3. Room for placement of feeder calculation (perspective).

A general view of BPD1 or BPD2 is given on page 63, diagrams on page 60.61, equipment layout options on page 62.

Factory installation of electrical equipment

In accordance with the version of electrical diagram selected by the Customer, type and layout of electrical equipment, in factory conditions it is installed inside TP units.

According to the typical scheme of two-beam FTP, KRU10 kV, ATS, RU0.4 kV and auxiliary boxes are installed in volumetric reinforced concrete blocks. In the case when the project provides for the accounting of electricity, measuring current transformers (in RU0.4 kV) and metering cabinets are additionally installed.

An internal earthing circuit with two leads is installed for connection to the external earthing circuit, high-voltage cable jumpers for connection of KRU10 kV to the power transformer, a flexible 0.4 kV bus from the power transformer to the input load switch RU0.4 kV, lighting circuit and secondary switching.

HV jumpers between 10 kV sections located in the same unit (in case of HV ATS), as well as between KRU10 kV and power transformer, they are made with a single-core cable with insulation from cross-linked polyethylene of APvVng10 grade with cable attachment in the clips along the internal surfaces of the FTP floor with subsequent withdrawal respectively to the KRU cells and transformer compartment and further in the clicks along the wall and ceiling of the transformer compartment to the location. The section of high-voltage cable passing along the wall of the transformer compartment is protected by a metal casing.

When PPS is installed in the standard position on the object, the sections of bridges laid along the internal surfaces of the PPS floor are in the volumetric cable unit.

Flexible busbar of kV is performed by wire PV0.38 of section (1 0.4 240) with its attachment in clicks along the ceiling of transformer compartment and RP compartment. When installing the power transformer in the operating position, the tips of wires and cables are located exactly at the place of their attachment to the corresponding outputs of the transformer.

All factory-mounted electrical equipment is adjusted and tested in the electrical laboratory of the plant in the scope of the corresponding requirements of Chapter 1.8. PUE "Acceptance Test Standards."

Grounding.

The internal grounding circuit of the FTC is installed at the factory. The substation is supplied with all necessary elements and materials for the external grounding circuit arrangement at the FTC installation site:

1. Ground wires in number of 8 pieces made of the CT3 angular ravnopolochny steel, 50х50 mm, by length - 2.5 m

2. Steel strip 4x40 mm, 60 m long.

A typical earthing scheme is shown on page 53.

In case of unsatisfactory results of measurements of resistance to current flow of the external grounding circuit, additional grounding conductors are clogged or special depth grounding conductors are installed.

Lightning protection.

Special measures for lightning protection of FTP are not required, since the metal reinforcement of the framework of volumetric and cable blocks has a rigid metal connection with the internal circuit, which corresponds to the RD 34.21.12287 "Instruction on the lightning protection of buildings and structures" of the Ministry of Energy.

Seismic resistance.

For regions with increased seismic hazard, CTP can be made with increased seismic resistance: using structures made of heavy concrete (GOST 2519282), reinforcement (GOST 578182) and fiber (TU 21336087). This increases the seismic resistance of KTP to 7 points on the Richter scale (test report No. 00604999 of JSC NIC VVA).

Electrical equipment of FTP

5.1. Main electrical equipment.

KTP includes the following main equipment:

- HV switchgear package (RM6);

- power transformer (TMG, TRIHAL, aTSE);

- device of automatic switch-on of a reserve of AVR (ABP10 of kV, ABP0.4 of kV);

- LV switchgear (TUR, VSRNV);

- electric power metering cabinet (SHU-1);

- auxiliary box (ECS).

Ensuring Service Security

The main measures ensuring the safety of FTP service are:

6.1. The use of modern electrical equipment in RP 10 kV, the current-carrying parts of which are inaccessible to personnel, do not require access to the current-carrying parts when checking the presence of voltage and phasing and have a reliable grounding system with a visible position of grounding contacts.

6.2. Use of low voltage assemblies and ALT panels in RP 0.4 kV, the current-carrying parts of which are protected, and operations to replace fuses on assemblies are carried out using insulating handles. The assembly has a stationary grounding system for the busbars.

6.3. Execution of an inspection-accessible grounding system for metal structures where electrical equipment is installed. The internal grounding circuit is made of 40x4 mm strip steel, and connections to it in regulated places of the corresponding steel structures are made with a flexible copper wire (MG - 25). There are places for connection of portable earthing during tests and measurements.

6.4. Clear inscriptions on equipment belonging inside and outside; installation of appropriate posters on the doors and barrier in the transformer compartment; designation of switching devices and dispatch names of connections.

6.5. The presence of auxiliary boxes in each FTC unit, which provide safe connection of measuring devices and portable lighting with a voltage of 12 V. FTC, are equipped with rubber dielectric mats for the RP compartment 0.4-10 kV and a portable wooden support, which is used when replacing lighting lamps located above the door at a height of 2.1 m.

Installation and installation

1. Cable blocks with clearance at the end of 130 mm shall be installed on the prepared foundation slab.

2. Install oil collectors in cable units under transformer compartments.

3. To install KTP blocks (BTP1 and BTP2) on cable blocks.

4. Install the straps between BTP1 and BTP2 units and on the FTP roof.

5. Install visors above gates and doors.

6. Install the external grounding circuit and connect it to the FFCP grounding bus.

7. Roll the power transformers into the FTP compartments and connect to the finished 0.4 kV bus line and high-voltage cables, connect to the internal grounding circuit of the housing and zero terminals of power transformers.

8. Connect high voltage sectional jumpers between the units (jumpers are supplied by the plant in the package).

9. Connect low-voltage sectional jumper between ALT panels and repair jumper between RU0.4 kV of beam "A" and beam "B," closing it with metal casing (jumpers and casing are equipped with factory).

10. Enter and connect high-voltage and low-voltage external cables (External Cable Parnithry can be obtained as required).

11. Measure the current flow resistance of the external grounding circuit, perform the necessary measurements and tests of power transformers, according to the operating instructions and item 1.8.16. PUE, test cables supplying FTP.

12. In case of positive results of measurements and tests, switch on the transformers, perform phasing on the 0.4 kV side, perform "hot" testing of the ALT device and start operation of the FTP.

13. Draw up the Act on the inclusion of FTC in the work.

Configuration of FFCP

When sending to the facility, FTP is supplied with:

1. Materials and parts for the production of interunit installation: sets of high-voltage and low-voltage jumpers, linings for power transformers, over-door visors, slivers, etc.

2. Materials and parts for the device on the object of the external grounding loop: angle 50x50x5 mm, length L = 2.5 m, quantity - 13 pcs, steel strip 40x4 mm, length L = 25 m, quantity - 30 pcs.

3. For operation: a set of rubber mats, a set of portable posters on TB, inventory supports - 2 pcs, operational bars up to 10 kV, SHO10U1 - 2 pcs.

4. Phaser and protection tester on 610 kV side -VAP6 (per individual Order).

5. "Micrologic" monitoring and control unit protection test device (per individual Order).

KTP Order in Plant

In order to place the PPS Fabrication Order at the plant, it is necessary to:

Select the schematic electrical diagram and layout of FTP equipment in this album.

Fill the marked (*) places in the circuit diagram.

Agree on the schematic diagram and layout of equipment with the power supply organization (city

or regional power grid).

Fill in the KTP order form and the counterparty information form.

The approved and approved design documentation shall be sent to the commercial department of the plant.

Within 1-3 days, the plant guarantees to send to your address a commercial offer indicating the cost of the ordered KTP. Upon agreement of the parties, an agreement on mutual obligations is drawn up. As a rule, the production of KTP is limited to 8-10 weeks after payment of the advance. When ordering a non-standard version, the production time is increased to 12 15 weeks. The finished PPS is shipped and delivered to the facility by the plant's or Customer's vehicles, as well as by rail.