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 UЗ
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) |
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250 |
400 |
630 |
1000 |
1600 |
2500 |
|
Rated voltage at the high voltage side (HV) , kV |
6; 10 |
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Maximum voltage at the high voltage side (HV), kV |
7,2; 12 |
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Rated voltage at the low voltage side(LV), kV |
0,4 |
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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 |
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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°С to + 40°С.
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 |
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Power transformer type |
Dry-type, oil |
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Neutral execution of power transformer at the low voltage side |
Dead-earthed neutral |
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Mutual bracing |
Single-row, double-row |
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Number of transformers |
Two transformers |
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Casing type and protection level according to GOST 14254-96 |
IP31 |
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Insulation of current conducting parts presence |
Non-insulated busbars |
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High voltage feeder execution |
Cable above and below |
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Cable execution of outlets in low voltage switchgear |
Outlet downwards |
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Circuit breaker installation |
Drawout, plug-in or fixed circuit breaker |
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RUNN function |
Entrance, line, section |
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Service conditions |
One-side service |
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Control type |
Local |
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Overall dimensions, mm |
High voltage section cell |
Width |
375 |
|
Depth |
1000 |
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Height |
1700 |
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Low voltage switchgear cabinets |
Entrance bay, sectional bay |
Width |
425 |
|
Depth |
600 |
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Height |
2100 |
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Line |
Width |
1000 |
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Depth |
600 |
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Height |
2100 |
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2KTPP are packaged depending on customer’s questionnaire.
