Industrial substations of 2 KTPP-6(10)/0.4 kV, 2 KTPP-6(10)/0.4 kV, including substations in metal body

Complete transformer substations of 2KTTP-6(10)/0.4 kV type are designed to receive, convert and distribute electric energy of three-phase alternating current with the frequency 50 or 60 Hz in power supply of industrial facilities.

Substations based on own-produced high voltage cells and own-assembled low voltage cabinets of xEnergy type.

As power transformer oil or dry-type transformer can be used.

Layout of substation can be single or double-row with busbar bridge.

Relay and automatic devices provide automatic standby activation at the LV side and protection from one-phase short circuits, overload.

There is possibility for electricity metering on bushing and linear feeders. Active and reactive electricity metering is performed on electronic counting basis.

Following contracted notations are applied:

SVV high voltage bushing section

RUNN switchgear at the low voltage side

SUNN connecting device at the low voltage side

SUVN connecting device at the high voltage side

HV high voltage

LV low voltage

Example of symbolic notation of substation:

2KTPP 630M/6/0,4 U

Substation with two transformers for industrial use of voltage: at the HV side 6 kV, at the LV side - 0.4 kV; oil transformers, rated power of each of them is 630 kVA, climatic execution U (for temperate climate), location category 3 (indoor).

General information

General engineering data of 2KTPP-6(10)/0.4 kV are listed in table:

Parameter designation

Dimension (power, kVA)

250

400

630

1000

1600

2500

Rated voltage at the high voltage side (HV) , kV

6; 10

Maximum voltage at the high voltage side (HV), kV

7,2; 12

Rated voltage at the low voltage side(LV), kV

0,4

Short-time thermal current at the HV/LV side during 1 s., kA

20/10

20/10

20/20

20/30

20/30

20/40

Short time electrodynamic current at the HV/LV side, kA

51/25

51/25

51/50

51/50

51/70

51/100

Insulation level according to GOST 1516.3-96

Normal insulation

2KTPP substations allow operating in conditions of climatic factors according to GOST 15150-69, for U type of climatic execution, and 3 locating category.

Ambient air temperature: from 25 to + 40.

Relative humidity is not more than 80% at +25 0C.

Altitude level above sea max 1000 m.

Cover protection level is IP31according to GOST 14254.

Continuous mode of operation.

2KTPP substations allow operating in conditions of external mechanical impact. Mechanical strength of 2KTPP corresponds to operating conditions of M6 group according to GOST17516.1-90.

Dust content up to 0.01gram per cubic meter (industrial environment of II type).

2KTPP execution meets the standards listed in the table:

Parameter designation

Parameter value

Power transformer type

Dry-type, oil

Neutral execution of power transformer at the low voltage side

Dead-earthed neutral

Mutual bracing

Single-row, double-row

Number of transformers

Two transformers

Casing type and protection level according to GOST 14254-96

IP31

Insulation of current conducting parts presence

Non-insulated busbars

High voltage feeder execution

Cable above and below

Cable execution of outlets in low voltage switchgear

Outlet downwards

Circuit breaker installation

Drawout, plug-in or fixed circuit breaker

RUNN function

Entrance, line, section

Service conditions

One-side service

Control type

Local

Overall dimensions, mm

High voltage section cell

Width

375

Depth

1000

Height

1700

Low voltage switchgear cabinets

Entrance bay, sectional bay

Width

425

Depth

600

Height

2100

Line

Width

1000

Depth

600

Height

2100

2KTPP are packaged depending on customers questionnaire.