Complete Pole-Mounted Transformer Substations (KTPM)
General information
Complete pole-mounted transformer substations (KTPM, Ukr. КТПМ), dead-end type, for outdoor installation, with power ratings from 25 to 400 kVA at a voltage of 6 (10) kV, designed for receiving, converting, and distributing three-phase alternating current electrical energy at a frequency of 50 Hz, at a rated voltage of 6 (10) / 0,4 kV, in power supply networks with a solidly grounded or isolated neutral on the low-voltage side.
The scope of application of KTPM covers power supply systems for urban, industrial, and agricultural facilities, as well as construction sites and other low-power national-economy facilities in temperate climate regions.
To ensure safety during operation and maintenance of the substation, KTPM units are installed on a pre-prepared foundation or metal structures at a height of not less than 1600 mm above ground level, equipped with a maintenance platform (with handrails and stairs for access).
The RUNN (Ukr. РУНН) cabinet may be fitted with a disconnect switch with fuses or an automatic circuit breaker at the input, and automatic circuit breakers on the outgoing lines. Upon separate order, an electricity metering unit and a street lighting panel are installed in the RUNN cabinet.
Climatic design U1 as per GOST 15150-69.
KTPM complies with the requirements of DSTU 3399-96.
Type designation structure
Main technical characteristics
| Power transformer rating, kVA | HV side | LV side | |||||
|---|---|---|---|---|---|---|---|
| Rated voltage, kV | Rated current, A | ||||||
| Fuse element | Line No. 1 | Line No. 2 | Line No. 3 | Line No. 4 | Outdoor lighting line | ||
| 25 | 6 | 8 | 25 | 25 | — | — | 16 (25*) |
| 10 | 5 | ||||||
| 40 | 6 | 10 | 31,5 | 31,5 | — | — | |
| 10 | 8 | ||||||
| 63 | 6 | 16 | 40 | 63 | 40 | — | |
| 10 | 10 | ||||||
| 100 | 6 | 20 | 100 | 100 | 80 | — | |
| 10 | 16 | ||||||
| 160 | 6 | 31,5 | 80 | 160 | 100 | 100 | |
| 10 | 20 | ||||||
| 250 | 6 | 50 | 80 | 250 | 100 | 250 | |
| 10 | 31,5 (40) | ||||||
| 400 | 6 | 80 | 250 | 400 | 160 | 100 | |
| 10 | 50 | ||||||
Recommended rated currents of fuse links for the protection of 6/0,4 and 10/0,4 power transformers
| Rated power of power transformer, kVA | Rated current (Inom, A) | |||||
|---|---|---|---|---|---|---|
| Transformer side | Fuse side | |||||
| 0,4 kV | 6 kV | 10 kV | 0,4 kV | 6 kV | 10 kV | |
| 25 | 36 | 2,4 | 1,44 | 40 | 8 | 5 |
| 40 | 58 | 3,83 | 2,3 | 60 | 10 | 8 |
| 63 | 91 | 6,05 | 3,64 | 100 | 16 | 10 |
| 100 | 145 | 9,6 | 5,8 | 160 | 20 | 16 |
| 160 | 231 | 15,4 | 9,25 | 250 | 31,5 | 20 |
| 250 | 360 | 24 | 14,4 | 400 | 50 | 40 (31,5) |
| 400 | 580 | 38,3 | 23,1 | 600 | 80 | 50 |
Dimensions
Description & purpose
KTPM is a mast-type dead-end outdoor package transformer substation rated from 25 to 400 kVA at 6(10)/0.4 kV. It supplies urban, industrial and agricultural facilities and construction sites with low power demand in temperate climate.
For safe operation and maintenance the substation is installed on a prepared foundation or steel structures at least 1600 mm above ground level, with a maintenance platform (handrails and a ladder). The RUNN cabinet may be fitted with a fuse-switch or an incoming circuit breaker and outgoing-line circuit breakers; metering and a street-lighting panel are installed on request. U1 climatic version per GOST 15150-69, compliant with DSTU 3399-96.
Manufactured by LK Energy Group (Odesa, in-house production since 2015). Send us a questionnaire — we will select the version and quote lead time and price.
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FAQ
What is a KTPM and where is it used?
What are the main advantages of a pole-mounted substation over a "kiosk-type" (ground-mounted) one?
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Project example
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Complete Pole-Mounted Transformer Substations (KTPM)
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