One-phase distribution transformers OL (ОЛ) on powers of 0,63 and 1,25 kVA

One-phase distribution transformers OL (ОЛ) on powers of 0,63 and 1,25 kVA

One-phase distribution transformer OLDescription

The transformers are intended for powering automatic block-system of railway longitudinal electric powering.
The transformer is manufactured in climatic version "УХЛ" (moderate cold) and "T" (tropical) of the location category 1 to ГОСТ 15150 and is intended for operation in outside at the following conditions:

  • ambient air temperature at operation is from minus 60 to plus 50°C;
  • the upper value of air humidity is 100% at 25 °C for "УХЛ1" version;
  • ambient air temperature at operation is from minus 10 to plus 55°C for "T1" version;
  • the upper value of air humidity is 100% at 35 °C for "T1" version;
  • creepage distance - III according to GOST 9920-89;
  • two transformers with equal rated voltage of the primary winding and common rated capacity value may operate in parallel;
  • mounting in any position

Design

The transformer is one-phase and with two windings. The axial-type core tape-type is wound of cold-rolled electro technical steel.
Windings are located concentrically on the core.
Secondary winding terminals are connected to the contacts by means of thread.

The transformer is patented
Patent publications No 2087967, 2110862, 2193252,
Patent Certificates on industrial unit No 42733. 

Table 1. Technical data

Parameter

Normal values

OL-0,63/6

OL-1,25/6

OL-0,63/10

OL-1,25/10

Voltage class, kV

6

10

Maximum operating voltage, kV

7,2

12

Rated voltage of the primary winding, kV

6,3

10,5

Rated voltage of the secondary winding*, V:

.

х-а1

218

х-а2

224

х-а3

230

х-а4

236

x-a5

242

Rated frequency, Hz

50 or 60

Rated power at the rated voltages 100 and 220V, VA

630

1250

630

1250

No-load current, %, not more

70

35

70

35

No-load current losses, Wt, not more

50

Short circuit voltage,%

4,5

Short circuit losses, Wt, not more

55

Test voltage, Hz
of industrial frequency during one minute
of full lighting impulse
of cut lighting impulse


25
60
70


25
60
70

Vector group of transformer

1/1-0

Mass, kg:

40

42

General view of transformer (drawing)