Type	Inner Diameter	Accuracy with monitoring units	Electrical Limiting values
VMI-xx Closed core models	From 1" to 7.87" From 25 mm to 200 mm	+ 5 %	- Max. voltage 600 V (USA) Max. voltage 1000 V (other countries) - Continuous Thermal Limiting current: 100 A (fault current) - Thermal Limiting current: 1 sec. 20 kA - Dynamic Limiting current: peak value 50 kA
VMIK-xx Split core models	From 0.91" to 7.8" From 23 to 200 mm	+ 10 %
VMIC-xx - Closed models VMICK-xx - Split models	Standard sizes From 4x8" to 8x24" From 105x204 to 204x610 mm On request other sizes	+ 15 %

 

thermal limit current Ith/t	20kA/s
dynamic limit current Idyn	50kA
continuous thermal limit current	100A

VMI-xx Closed core model
Type	D inch (mm)	A inch (mm)	B inc (mm)	C inch (mm)	E inch (mm)	F inch (mm)	Weight lbs (kg)
VMI-25	1.0 (25)	1.81 (46)	1.02 (26)	2.09 (53)	1.38 (35)	-	0.33 (0.15)
VMI-35	1.5 (38)	3.54 (90)	1.81 (46)	3.78 (96)	2.75 (70)	1.5 (38)	0.66 (0.30)
VMI-60	2.44 (62)	3.54 (90)	1.81 (46)	4.92 (125)	2.75 (70)	1.5 (38)	1.19 (0.54)
VMI-95	3.8 (97)	5.75 (146)	2 (50)	6.34 (161)	4 (102)	1.5 (38)	1.76 (0.8)
VMI-130	5.27 (133)	7.72 (196)	2.12 (54)	7.87 (200)	5.43 (138)	1.65 (42)	2.75 (1.25)
VMI-200	7.87 (200)	10.47 (266)	2.68 (68)	10.0 (255)	7.90 (200)	2.0 (50)	3.30 (1.50)

VMIK-xx Split core model
Type	D inch (mm)	A inch (mm)	B inc (mm)	C inch (mm)	E inch (mm)	F inch (mm)	Weight lbs (kg)
VMI-25	0.91 (23)	1.81 (46)	1.02 (26)	2.64 (67)	1.38 (35)	-	0.46 (0.21)
VMI-35	1.38 (35)	3.54 (90)	1.81 (46)	4.33 (110)	2.75 (70)	1.5 (38)	0.80 (0.36)
VMI-60	2.36 (60)	3.54 (90)	1.81 (46)	5.51 (140)	2.75 (70)	1.5 (38)	1.32 (0.60)
VMI-95	3.25 (95)	5.75 (146)	2 (50)	6.34 (161)	4 (102)	1.5 (38)	2.16 (0.98)
VMI-130	5.12 (130)	7.72 (196)	2.12 (54)	7.80 (198)	5.43 (138)	1.65 (42)	3.20 (1.45)
VMI-200	7.80 (198)	10.47 (266)	2.68 (68)	10.0 (255)	7.90 (200)	2.0 (50)	3.75 (1.70)

Conductor sizes
Sum current transformers	Diameter inside inch	Max. Number of Cables, Max. Cable Sizes (Copper conductors, 600 V AC)	Diameter inside mm	Metric sizes (Iso) Cu(mm2) -conductors
VMI(K)-25	1	two 2/0, or four #4 AWG	23	4x25
VMI(K)-35	1 3/8	two 4/0, or four 1/0, or eight #6 AWG	35	4x50
VMI(K)-60	2 3/8	two 500 MCM, or four 300 MCM, or eight 1/0	60	4x150
VMI(K)-95	3 1/4	four 500 MCM	95	6x240
VMI(K)-130	5 1/8	eight 500 MCM, or twelve 350 MCM	130	8x240
VMI(K)-200	8	four 2000 MCM, or eight 1250 MCM	200	12x240

Definition of Sum Current Transformer

Size of a sum current transformer can be defined according table or by calculation pattern.

d = outer diameter of cable with insulation
D = inner diameter of sum current transformer

Note! Leave some space to make it easier to install cable through the hole of the transformer.

WINDOW TYPE SUM CURRENT TRANSFORMERS

Transformers are standard models or custom made models.
In custom made models give L and H measures.

Sum current transformer for busbar installation are manufactured to special order. The following measurements are required:
Length (L) and height (H).
Maximum and minimum measures of custom made bus bar transformers (window type):

Min H	2”	(50 mm)
Max H	10”	(250 mm)
Min L	2”	(50 mm)
Max L	26”	(660 mm)

 

Standard sizes
Type	H inch (mm)	L inch (mm)
VMIC(K)4x8	4 (105)	8 (204)
VMIC(K)4x14	4 (105)	14 (356)
VMIC(K)6x8	6 (154)	8 (204)
VMIC(K)6x14	6 (154)	14 (356)
VMIC(K)6x20	6 (154)	20 (508)
VMIC(K)8x8	8 (204)	8 (204)
VMIC(K)8x14	8 (204)	14 (356)
VMIC(K)8x20	8 (204)	20 (508)
VMIC(K)8x24	8 (204)	24 (610)