ОМ, ОМП, ОМГ transformers
0.25 … 10 kV·A
HV: 3…27.5 kV
LV: 0.08 … 0.23 kV
|Wiring diagrams and connection groups:||
Single-phase oil transformers are intended for transforming of electric energy in networks of power systems, for power supply of railroad electric equipment and of other electric power consumers.
The voltage regulation of transformers is carried out on a completely disconnected transformer by switching the branches of the windings
Installation height above sea level no more than 1000 m
Full testing during production
Single-phase oil transformers OM, OMP, OMG types are intended for electric power conversion in power systems networks, power supply of electric equipment of railways and other single-phase electric consumers.
Transformers are designed to operate in moderate (from plus 40 to minus 45 °C), cold or moderately cold (from plus 40 to minus 60 °C) climate.
The environment is non-explosive, does not contain dust in concentrations that reduce the parameters of products in unacceptable limits. Installation height above sea level no more than 1000 m.
Scheme and group of compounds 1/1-0. Rated frequency 50 Hz. The voltage regulation of transformers is carried out on a completely disconnected transformer by switching the branches of the windings. VL side voltage regulation limits:
- for transformers OMP from plus 5% to minus 2×5%
- for transformers OM-1.25 / 10, OM – 2.5 / 10 ± 5%
- for transformers OM-2.5 / 27.5, OM-4 / 27.5 ± 2 x 2.5%
- for OMG transformers, the nominal branch voltage at idle is 27,500 – 26,250 – 25,000 V.
According to GOST 11677, the maximum deviations of the technical parameters of the transformers are: short-circuit voltage ± 10%; short circuit loss on the main branch + 10%; loss of idling + 15%; gross weight + 10%.