Specification
BK series machine tool control transformer is suitable for circuit of 5060Hz, voltage up to 500V, usually applied as power supply for machine tool electrical appliances, local lightings and indicator lamps.

Working environment
1.Ambient air temperature: -5+40, the highest monthly mean temperature should not exceed +30;
2.Altitude for installing place should not exceed 1000m; 
3.When the ambient air temperature is +40, the relative humidity should not exceed 50%, and it allows higher relative humidity under lower temperature. Max average humidity in the dampest month is 90%, meanwhile the lowest average temperature of this month is +25, and condensation on the product surface caused by temperature change should be taken into consideration.

Dimensions

Technical Data

Type	Installing dimensions		Outline dimensions			Cavity
	A	C	B	D	E	K or KJ
BK-50	610.4	543	76	76	83	512
BK-100	700.4	602.5	84	92	100	612
BK-150	800.4	622.5	96	105	110	612
BK-250	880.4	733	105	120	125	911.5
BK-300	950.4	763	115	125	125	911.5
BK-400	1000.4	803	120	130	130	911.5
BK-500	1000.4	863	134	144	150	911.5
BK-700	1250.4	1003	150	150	158	911.5
BK-1000	1250.4	1103.5	150	153	160	911.5
BK-1500	1340.4	1163.5	160	240	137	911.5
BK-2000	1580.4	1223.5	189	270	145	911.5