Zero Sequence Current Transformer

Code and Implication

Technical Parameters

Connection terminals and relay symbol	Relay coil connections	Scale of relay	Primary zero-sequence current
DD11/60	Series connection	15×1	2.5-4.5
		30×1
	Parallel connection	15×2	3-5
		30×2
DL11/0.2	Series connection	15×1	3-5
		30×1
	Parallel connection	15×2	3-6
		30×2

Wiring Diagram

Outline Dimensions

LXK
Type	ØD	Ød	H	a	b	m	n	c
LXK-80	165	80	185	130	110	120	90	57
LXK-100	180	100	200	130	110	120	90	57
LXK-120	204	120	224	130	110	120	90	57
LXK-150	235	150	270	190	150	145	125	57
LXK-180	310	180	376	260	220	164	125	80
LXK-200	330	200	370	260	220	164	125	80
LXK-240	350	240	400	260	220	164	125	80

LXK
Type	A	B	C	D*E	F*G	H
LXK-80	85	170	63	132*122	110×100	195
LXK-100	105	190	65	132*125	110×100	208
LXK-120	125	212	65	132*127	110×100	230
LXK-120(50/5)	125	215	67	132*130	110×105	230
LXK-140	145	240	65	200*133	150×100	270
LXK-150	155	243	65	200*133	150×100	275
LXK-160	165	268	65	200*133	150×100	290
LXK-180	185	302	67	280*155	220×115	356
LXK-200	205	326	69	280*155	220×120	382
LXK-220	225	346	69	280*155	220×120	402
LXK-240	245	386	80	280*167	220×120	438
LXK-260	265	406	80	280*167	220×130	458
LXK-300	305	465	80	280*167	220×130	523