BK Control transformer Full load temperature rise no more 85 degree Warranty:1year 10 years experience CE FCC ISO9001:2008 Application:  BK(DK) Series control transformer(Hereafter call transformer) is suitable for circuit of 50~60Hz, voltage up to 500V, usually applied as power supply for machine tool electrical appliances, locallightings and indicator lamps power supply.Structure Character:  According  to different structures,  BK  transformer belongs to shell type,  and according to the installation mode, it belongs to vertical type. Model Means:  BK-x                                     DK-x  B:Transformer                     D: Single Phase  K: Control                            K: Control     x: Rated Capacity              x: Rated CapacityWorking Enviconment:1.Ambient air temperature: -5 degree ~+45 degree , the highest monthly mean temperature should not exceed +30°C;2.Altitude for installing place should not exceed 1000m;3.When the ambient  air  temperature is +40°C, 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°C,  and  condensation  on  the  product  surface  caused  bytemperature change should be taken into consideration.Outline and Install dimension

type	Outline dimension(mm)			Hole distance for installation(mm)		Installationhole(mm)K × J
	Bmax	Dmax	Emax	A	C
BK-50	78	66	90	56±0.4	50±3	5 × 12
BK-100	84	78	93	56±0.4	62±2.5	6 × 12
BK-150	102	88	110	83±0.4	70±2.5	6 × 12
BK-250	102	95	110	83±0.4	76±3	9 × 11.5
BK-300	120	127	135	100±0.4	90±3	9 × 11.5
BK-400	146	130	160	123±0.4	90±3	9 × 11.5
BK-500	146	145	160	123±0.4	105±3	9 × 11.5
BK-700	146	155	160	123±0.4	115±3.5	9 × 11.5
BK-1000	150	165	160	123±0.4	125±3.5	9 × 11.5
BK-1500	171	200	190	145±0.4	135±3.5	9 × 11.5
BK-2000	180	230	210	145±0.4	160±3.5	9 × 11.5

BK series machine tools control transformer