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Transformers of the ОSМ series

ОSМ series transformers with power ratings from 0.063 to 4.0 kVA, primary winding voltage from 220 to 660 V, and secondary winding voltage from 12 to 380 V are intended for supplying control circuits, local lighting, signaling, and automation systems. The transformers comply with the requirements of ГОСТ 19294.

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Description

Power range

- Types of climatic design – UЗ, UHLZ, and ТZ according to ГОСТ 15150.
- Designed for installation in enclosed spaces.
- Transformers with a power of 1.6; 2.5; and 4.0 kVA are installed on a horizontal plane, while those up to 1.0 kVA can be installed both horizontally and vertically.
-Protection degree – IP00 according to ГОСТ 14254. By agreement between the customer and manufacturer, transformers can be provided with IP20 protection for terminal contacts.

Transformer symbols

О – Single-phase.
S – Dry.
М – Multi-purpose.
У3 – Climatic design and placement category.

Characteristic

Каталог.cdr

Main technical specifications of transformers and transformer connection group
Transformer type	Rated power of secondary winding, kVA	Short-circuit voltage, %	No-load current, %	Rated winding voltage, V		Winding connection diagram and vector group
Transformer type	Rated power of secondary winding, kVA	Short-circuit voltage, %	No-load current, %	Primary	Secondary	Winding connection diagram and vector group
ОSМ-0,063	0,063	16	31,5	220; 380; 660	12; 14; 24; 29; 42; 56; 110; 130; 220; 260	1/1-0
ОSМ-0,1	0,100	11,5	31,5	220; 380; 660		1/1-0
ОSМ-0,16	0,160	8,5	30	220; 380; 660		1/1-0
ОSМ-0,25	0,250	7	30	220; 380; 660	24; 29; 42; 56; ПО; 130; 220; 260	1/1-0
ОSМ- 0,4	0,400	5,5	25,5	220; 380; 660	24; 29; 42; 56; ПО; 130; 220; 260	1/1-0
ОSМ-0,63	0,630	5,0	25	220; 380; 660	24; 42; 110; 220	1/1-0
ОSМ-1,0	1,000	4,5	23,5	220; 380; 660	42; 110; 220	1/1-0
ОSМ-1,6	1,600	4,0	16	220; 380; 660	110; 220; 380	1/1-0
ОSМ-2,5	2,500	3,5	16	220; 380; 660		1/1-0
ОSМ-4,0	4,000	3,0	10,5	220; 380; 660		1/1-0

Overall and Mounting Dimensions

Overall and installation dimensions and weight of the transformer
Transformer type	Overall dimensions, mm							Weight, kg
Transformer type	A	B	b	D	F	H	L	Weight, kg
ОSМ-0,063	70	78	49	55	88	90	88	1,8
ОSМ-0,1	70	78	49	55	88	90	88	2,1
ОSМ-0,16	106	95	60	64	120	140	104	2,7
ОSМ-0,25	106	95	60	64	120	140	104	3,5
ОSМ- 0,4	110	147	105	107	137	176	162	4,3
ОSМ-0,63	110	147	105	107	137	176	162	5,9
ОSМ-1,0	110	147	105	107	137	176	162	6,4
ОSМ-1,6	106	250	200	180	160	217	246	18,7
ОSМ-2,5	106	250	200	180	160	217	246	27,3
ОSМ-4,0	106	250	200	180	160	217	246	29,2

By agreement with the customer, it is allowed to manufacture transformers with parameters different from those given in any design version.