STZ – Single-phase control, isolating and safety transformers

Designed and tested according

· IEC/EN 61558-2-2 / 2-4 / 2-6
· UL 5085-2
· CSA 22.2 No. 66

Typical applications

· Control voltage circuits
· Functional low voltage
· Safety low voltage
· Protective seperation

For use according to

· IEC/EN 60204-1

Basic equipment

· Separate windings
· Insulation class: B / from STZ5.3: F
· Ambient temperature –25 to 40 °C
· Connection terminal (<=115 A) · Frequency 50/60 Hz · ±5 % tapping on the primary side

Other available accessories

· Protective enclosure IP23
· Additional tapping
· Conductive screen
· Temperature monitoringg
· conductive screen
· Tropic-proof equipment

Sample order

· requested type STZ5,3
· requested rated input voltage 230V
· requested rated output voltage 36V

The correct type designation reads STZ5,3(230/36)

The unambiguous article number of your configuration will be defined by trafomodern during the offer- and process.

Technical notes

Important notes:

According to IEC/EN 61 558 transformers with rated outout voltages ≤ 50 V can be used as safety transformers
For versions with increased climate resistance, the transformers is supplied with a specially insulated finish.

UL/CSA only up to 600 V (incl. tapping)
CUR for EIS130 or EIS155 according to OBJY2/8.E160829

When ordering, the following information must be added to the type designation:

STZ5,3(*/*)
1^st place holder ≙ rated input voltage
2^nd place holder ≙ rated output voltage

CAD-data

show

primary voltage	100-950V	100-950V	100-950V	100-950V
secondary voltage	12V	24V	42V	100-230V
STZ0,06	STP	STP	STP	STP
STZ0,1	STP	STP	STP	STP
STZ0,16	STP	STP	STP	STP
STZ0,2	STP	STP	STP	STP
STZ0,25	STP	STP	STP	STP
STZ0,315	–	STP	STP	STP
STZ0,4	–	STP	STP	STP
STZ0,5	–	STP	STP	STP
STZ0,63	–	STP	STP	STP
STZ0,8	–	STP	STP	STP
STZ1,0	–	STP	STP	STP
STZ1,3	–	STP	STP	STP
STZ1,6	–	STP	STP	STP
STZ2,0	–	STP	STP	STP

primary voltage	230-950V	230-950V	230-950V	230-950V
secondary voltage	24V	42V	110V	230V
STZ2,5	STP	STP	STP	STP
STZ3,0	STP	STP	STP	STP
STZ4,0	STP	STP	STP	STP

primary voltage	230V	230V	230V	230V	230V
secondary voltage	12V	24V	42V	110V	230V
STZ5,3	STP	STP	STP	STP	STP
STZ8,3	–	STP	STP	STP	STP
STZ13,3	–	STP	STP	STP	STP

primary voltage	400V	400V	400V	400V	400V
secondary voltage	12V	24V	42V	110V	230V
STZ5,3	STP	STP	STP	STP	STP
STZ8,3	–	STP	STP	STP	STP
STZ13,3	–	STP	STP	STP	STP

Rated power kVA	Short time rating kVA	Rated input voltage V (selectable)	Rated output voltage V (selectable)	Type	Cu-factor¹⁾
0,06	0,13	50–1000 ± 5 %	12-400	STZ0,06(/)	0,20
0,1	0,24		12-400	STZ0,1(/)	0,25
0,16	0,36		12-400	STZ0,16(/)	0,40
0,2	0,44		12-1000	STZ0,2(/)	0,65
0,25	0,6		12-1000	STZ0,25(/)	0,80
0,315	0,75		12-1000	STZ0,315(/)	1,10
0,4	1		12-1000	STZ0,4(/)	1,15
0,5	1,6		12-1000	STZ0,5(/)	1,40
0,63	1,7		12-1000	STZ0,63(/)	1,90
0,8	2		12-1000	STZ0,8(/)	2,10
1	2,8		12-1000	STZ1,0(/)	2,20
1,3	3,7		12-1000	STZ1,3(/)	3,20
1,6	5,5		12-1000	STZ1,6(/)	3,40
2	7		12-1000	STZ2,0(/)	4,00
2,5	9		12-1000	STZ2,5(/)	5,50
3	11,5		12-1000	STZ3,0(/)	9,50
4	15		12-1000	STZ4,0(/)	10,40
5,3	13		12-1000	STZ5,3(/)	12,50
8,3	21		12-1000	STZ8,3(/)	17,50
13,3	34		12-1000	STZ13,3(/)	25,00

1) The calculation method of the material price surcharge will be explained in Section 2.1 in the general conditions of business.

type	total weight	no-load losses	short-circuit losses	short-circuit voltage	efficiency	a	b	c	b	c	b	c	b	c	b	c	e	f	ø g	b1	c1
	kg	W	W	%			12 V		24 V		42 V		110 V		230 V
STZ0,06	1,5	6	5	7,8	0,85	85	75	93	75	93	75	93	75	93	75	93	64	47	4,8 x 8	60	76
STZ0,1	2	7	8	6,9	0,87	85	89	93	89	93	89	93	89	93	89	93	64	61	4,8 x 8	74	76
STZ0,16	2,3	9	12	6,6	0,88	85	97	93	97	93	97	93	97	93	97	93	64	70	4,8 x 8	83	76
STZ0,2	3	11	17	6,6	0,88	106	83	111	83	111	83	111	83	111	83	111	80	63	5,8 x 12	80	94
STZ0,25	3,8	13	14	5,1	0,9	106	108	115	92	111	92	111	92	111	92	111	80	72	5,8 x 12	89	94
STZ0,315	4,3	10	18	5,5	0,92	121	–	–	88	121	88	121	88	121	88	121	90	68	5,8 x 12	86	106
STZ0,4	5,2	17	18	4,4	0,92	121	–	–	100	121	100	121	100	121	100	121	90	80	5,8 x 12	98	106
STZ0,5	6,8	15	24	3,9	0,93	121	–	–	136	125	120	121	120	121	120	121	90	100	5,8 x 12	118	106
STZ0,63	7,7	15	27	4,1	0,94	151	–	–	118	149	107	145	107	145	107	145	122	82	7 x 15	104	132
STZ0,8	9,6	17	25	3,2	0,95	151	–	–	135	149	124	145	124	145	124	145	122	99	7 x 15	121	132
STZ1,0	13,4	27	29	2,9	0,95	151	–	–	161	149	161	149	150	145	150	145	122	125	7 x 15	147	132
STZ1,3	14,9	32	35	3	0,95	175	–	–	145	164	145	164	138	160	138	160	135	110	7 x 15	135	152
STZ1,6	17,4	21	37	2,4	0,96	195	–	–	142	242	146	187	142	183	142	183	150	110	10 x 18	140	170
STZ2,0	21,5	27	33	2	0,97	195	–	–	154	242	158	187	154	183	154	183	150	122	10 x 18	152	170
STZ2,5	21,5	39	43	2,4	0,97	195	–	–	154	242	154	242	158	187	154	183	150	122	10 x 18	152	170

1) Values measured at room temperature all dimensions in mm

type	total weight	no-load losses	short-circuit losses	short-circuit voltage	efficiency	a	b	c	b	c	b	c	b	c	b	c	e	f	ø g	b1	c1
	kg	W	W	%			12 V	12 V	24 V	24 V	42 V	42 V	110 V	110 V	230 V	230 V
STZ3,0	26	30	55	2,1	0,97	230	201	253	201	253	231	264	179	274	175	257	190	200	11	–	–
STZ4,0	32	38	88	2,2	0,97	230	228	253	228	253	257	264	205	274	201	257	190	200	11	–	–

1) Values measured at room temperature all dimensions in mm

type	total weight	no-load losses	short-circuit losses ¹⁾	short-circuit voltage	efficiency	a	b	c	b	c	b	c	b	c	b	c	e	f	ø g	b1	c1
	kg	W	W	%			12 V		24 V		42 V		110 V		230 V
STZ5,3	40	40	165	4	0,96	260	200	374	200	374	200	374	214	374	214	360	230	126	10 x 18	–	–
STZ8,3	55	65	200	4	0,97	260	–	–	230	374	230	374	244	374	244	374	230	156	10 x 18	–	–
STZ13,3	80	95	265	3,5	0,97	320	–	–	240	440	240	440	270	440	270	440	270	172	13 x 20	–	–

*) The dimensions of the higher rated voltage are applicable
1) Values measured at room temperature
all dimensions in mm