One-ended substations with insulated neutral and PKTPVR type transformers

Function, field of application
One-ended complete transformer substation with insulated neutral was designed to receive, convert and distribute electric power of three-phase alternating current with the frequency 50 Hz.

PKTPVR is designed to be used in energy supply systems of open cast mining and consumers in underground mines, etc.

Construction of PKTPVR.
Constructively substation is made as a kiosk type module and has built-up and welded construction. Framework is load-bearing and bears hardest dynamic impacts.

PKTPVR type substation is an assembled set that is simple and easy to use.

Substation consists of following structural components (according to GOST 14695-80 and TU 34.11.10873-93):

1) HV switchgear cabinet;

2) LV switchgear cabinet;

3) High-voltage bushing;

4) Transformer’s chamber.

HV switchgear cabinet if disconnector RVZ is installed is divided into two chambers: chamber, where HV disconnector with safety fuses and aerial fuses are placed and chamber where drives of main switch and grounding blades.

Transformers chamber has swinging gates on two sides, by means of those gates access into chamber is performed and installation and deinstallation of equipment including power transformer if vertical jumper is removed.

All equipment of 0.4 kV is installed in LV switchgear cabinet.

All gates are equipped with locks fixing gates in closed position, locks of HV switchgears cell have tricks, different from locks of LV switchgears cell.

High-voltage bushing is an enclosed current-conducting wire with metal sheath and has inside-fixed busbar.

Strapping of substation is performed by means of frames welded on the top of the body.


Substation type

, mm

L, mm

L, mm

, mm

Weight, kg

PKTPVR-25

1500

1800

2480

2200

1500

PKTPVR -40

1560

PKTPVR -63

1670

PKTPVR -100

1800

PKTPVR -100

1580

2190

2865

2490

2300

PKTPVR -160

2500

PKTPVR -250

2860

PKTPVR -400

3100

PKTPVR -630

2245

2245

2855

2675

4080

Technical data

Item

Value

Rated power of power transformer, kVA

25; 40; 63; 100; 160; 250; 400; 630

Rated voltage at the HV side, kV

6; 10

Rated voltage at the LV side, kV

0,4

Execution of HV bushing

Aerial

Execution of LV terminal

Cable

Offset disconnector type (for aerial bushing)

RLND disconnector

combination of bushing/feeder units at the LV side

/

With aerial bushing

Substation type

, mm

L, mm

L, mm

, mm

PKTPVR-25

1520

2560

3000

1700

PKTPVR -40

1750

PKTPVR -63

1850

PKTPVR -100

1800

2760

3200

2400

PKTPVR -160

2500

PKTPVR -250

3000

PKTPVR -400

2250

3260

3700

3400

PKTPVR -630

4300

Technical data

Item

Value

Rated power of power transformer, kVA

25; 40; 63; 100; 160; 250; 400; 630

Rated voltage at the HV side, kV

6; 10

Rated voltage at the LV side, kV

0,4

Execution of HV bushing

Aerial, cable

Execution of LV terminal

cable

HV built-in disconnector type

RVZ disconnector

Offset disconnector type (for aerial bushing)

RLND

combination of bushing/feeder units at the LV side

/