Pole-top type substations with dead-earthed neutral, PKTPVR type

Function, field of application. 

Substations are designed to receive, convert and distribute electric energy of three-phase alternating current with the frequency 50 Hz in power supply systems of small-scale industrial, agricultural and other facilities.

 

Construction

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

Substation consists of following structural components:

1) HV switchgear cabinet;

2) LV switchgear cabinet with frame for transformer;

3) Outdoor HV disconnector;

 
HV and LV switchgear cabinets are secured by bolts and they are an integral unit. On the top of HV switchgear are installed: bushing insulators (HV bushing from linear disconnector is performed through them), ONSh type insulators and valve dischargers (or excess-voltage suppressors). Linear disconnector is located on pole or on power transmission tower and equipped with grounding blades. 

Power transformer is mounted on the frame on the opposite side from LV switchgear cabinet. Current-conducting parts are enclosed. 

HV safety fuses are located in HV switchgear cabinet. Other substation elements are installed in LV switchgear cabinet.

All substation gates are equipped with locks fixing gates in closed position, locks of HV switchgear’s cabinet have tricks, different from locks of LV switchgear’s cabinet.

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

Electric schematic diagram pole-type substation with dead-earthed neutral PKTPVR type, 25-63 kVA, A/A

 

Positional notation	Item	Quantity
QS1	Disconnector  10 kV	1
FV1-FV3	Aerial fuse 10(6) kV	3
FU1-FU3	Safety fuse PKT 10(6) kV	3
Т1	Power transformer	1
QF1	Incoming switch	1
QF2-QF4	Feeder switch	3

One-ended substation with dead-earthed neutral and service platform

Options of substation:

- with service platform

- without service platform