KBU

Foldable cable type current transformers multict KBU

Current transformer with divisible measuring core for primary rated currents from 100 A to 5000 A, secondary rated current 5 A or 1 A, in accuracy classes 0.5, 1 and 3.

The divisible measuring system enables easy retrofitting in existing systems with minimum installation effort.

For installation, the locking mechanism on the transformer is opened, placed around the primary conductor and audibly engaged again. After connecting the secondary conductors, the measuring arrangement is ready for operation immediately.

Dimensions:

KBU 23	Rail 1: 20 x 30 mm Round conductor: 20 mm Width: 93 mm	Current range: 100 … 400 A
KBU 58	Rail 1: 50 x 80 mm Round conductor:50 mm Width: 125 mm	Current range: 250 … 1000 A
KBU 812	Rail 1: 80 x 120 mm Round conductor:80 mm Width: 155 mm	Current range: 250 … 1500 A
KBU 816	Rail 1: 80 x 160 mm Round conductor:80 mm Width: 195mm	Current range: 1000 … 5000 A

Highlights

Ideal for retrofitting in existing systems
Straightforward and secure attachment – Current transformer engages audibly
Available with secondary current 5 A/1 A
Also available in accuracy class 0.5
Four different designs

Technical data

Working temperature range:	-5 ºC < T < +40 ºC
Storage temperature range:	-25 ºC < T < +70 ºC
Therm. Rated continuous current I_CTH:	1,0 x I_N
Therm. Rated short-time current I_th:	60 x I_N, 1 Sek.
Max. operating voltage U_m:	0,72 kV
Insulation test voltage:	3 kV, U_eff, 50 Hz, 1 Min.
Rate frequency:	50 Hz
Insulation class:	E
Applied technical standards:	DIN EN 61869, Teil 1 + 2

Typ	A (Width) mm	B (Height) mm	C / C1 (Depth) mm	D mm	E mm	F mm	G mm
KBU 23	93	106	34 / 58	23	33	64	56
KBU 58	125	158	34 / 58	55	85	96	56
KBU 812	155	198	34 / 58	85	125	126	56
KBU 816	195	243	64 / 79	85	165	156	62

Order tables

Order table KBU 23

Dimensions: Rail 1, 20 x 30mm / Round conductor 20 mm ⁄ Width 93 mm ⁄ Hight 106 mm / Depth 58 mm

Secondary current		5 A
Primary current	Rated power	Accuracy class 3	Accuracy class 1	Accuracy class 0,5
[ A ]	[ VA ]	Item no.	Item no.	Item no.
100	1,25	23064	—	—
150	1,5	23065	—	—
200	2,5	23066	—	—
250	1,5	—	23067	—
300	3,75	—	23068	—
400	1	—	—	23070
400	5	—	23069	—

Secondary current		1 A
Primary current	Rated power	Accuracy class 3	Accuracy class 1	Accuracy class 0,5
[ A ]	[ VA ]	Item no.	Item no.	Item no.
100	1,25	23071	—	—
150	1,5	23072	—	—
200	2,5	23073	—	—
250	1,5	—	23074	—
300	3,75	—	23075	—
400	1	—	—	23077
400	5	—	23076	—

Order Table KBU 58

Dimensions: Rai 150 x 80 mm / Round conductor 50 mm ⁄ Width 125 mm ⁄ Hight 158 mm / Depth 58 mm

Secondary current		5 A		1 A
Primary current	Rated power	Accuracy class 1	Accuracy class 0,5	Accuracy class 1	Accuracy class 0,5
[ A ]	[ VA ]	Item no.	Item no.	Item no.	Item no.
250	1,5	12405	—	23084	—
300	2,5	12406	—	23085	—
400	1	—	23078	—	23092
400	2,5	12407	—	23086	—
500	2,5	—	23079	—	23093
500	5	12408	—	23087	—
600	2,5	—	23080	—	23094
600	5	12409	—	23088	—
750	2,5	—	23081	—	23095
750	5	12410	—	23089	—
800	2,5	—	23082	—	23096
800	7,5	12411	—	23090	—
1000	5	—	23083	—	23097
1000	10	12412	—	23091	—

Order Table KBU 812

Dimensions: Rail 1, 80 x 120 mm / Round conductor32,5 mm ⁄ Width 59,2 mm ⁄ Hight 96,4 mm / Depth 58 mm

Secondary current		5 A		1 A
Primary current	Rated power	Accuracy class 1	Accuracy class 0,5	Accuracy class 1	Accuracy class 0,5
[ A ]	[ VA ]	Item no.	Item no.	Item no.	Item no.
250	1,5	23098	—	23114	—
300	2,5	23099	—	23115	—
400	2,5	23100	—	23116	—
500	2,5	—	23106	—	23123
500	5	23101	—	23117	—
600	2,5		23107	—	23124
600	5	23102	—	23118	—
750	2,5		23108	—	23125
750	2	23103	—	23119	—
800	2,5	—	23109	—	23126
800	7,5	18893	—	21692	—
1000	5	—	23110	—	23127
1000	10	23104	—	23120	—
1200	5	—	23111	—	23128
1200	10	23105	—	21693	—
1250	7,5	—	23112	—	23129
1250	15	12413	—	23121	—
1500	7,5	—	23113	—	23130
1500	15	12414	—	23122	—

Order table KBU 816

Dimensions: Rail 1,80 x 160 mm / Round conductor 80 mm ⁄ Width 195 mm ⁄ Hight 243 / Depth gesamt 79 mm

Secondary current		5 A		1 A
Primary current	Rated power	Accuracy class 31	Accuracy class 0,5	Accuracy class 1	Accuracy class 0,5
[ A ]	[ VA ]	Item no.	Item no.	Item no.	Item no.
1000	10	23131	23148	23163	23180
1000	15	23132	—	23164	—
1200	10	23133	23149	23165	23181
1200	15	23134	—	23166	—
1500	10	23135	23150	23167	23182
1500	15	23136	23151	23168	23183
1600	10	23137	23152	23169	23184
1600	15	23138	23153	23170	23185
2000	10	23139	23154	23171	23186
2000	15	23140	23155	19478	23187
2500	10	23141	23156	23172	23188
2500	15	19353	23157	23173	23189
3000	15	23142	23158	23174	23190
3000	30	23143	—	23175	—
4000	15	23144	23159	23176	23191
4000	30	23145	23160	23177	23192
5000	15	23146	23161	23178	23193
5000	30	23147	23162	23179	23194