Control toroidal transformers

Mono-phase toroidal transformers
Control toroidal transformers

Control transformers – compliant to SR EN 61558-2-2.
These transformers have an input rated voltage up to 1000 Vac, the rated frequency up to 50 Hz, and a rated output not exceeding 1000 VA.
They are defined by a specific parameter which is the instantaneous maximum output, this being the maximum power produced temporarily, when the transformer is supplied with the rated input voltage, rated frequency, load power factor is 0,5 and the secondary voltage is no less than 95% from rated value.
The transformers produced by PETRA have an instantaneous maximum output which is 25% more than the rated output.

Mono-phase Control toroidal transformers

Tehnical data Control toroidal transformers

Power [VA]	Dmax [mm]	H [mm]	Weight [kg]	dU [%]	DTmax (C)	Cooper losses [W/20C]	No load losses [W]
3	46	26	0.13	21.97	25	0.83	0.09
5	51	27	0.18	17	26	1.01	0.14
10	52	29	0.21	20.17	40	2.44	0.14
15	61	29	0.30	17.1	39	3.04	0.21
20	62	30	0.35	15.69	43	3.69	0.21
25	70	29	0.43	13.22	39	3.81	0.32
30	71	30	0.47	13.26	44	4.58	0.32
35	71	30	0.50	12.97	47	5.21	0.33
40	75	35	0.58	12.96	44	5.95	0.39
50	85	36	0.74	11.32	41	6.36	0.51
63	89	36	0.74	11.32	41	6.39	0.51
80	90	37	0.98	9.55	47	8.51	0.61
100	90	45	1.16	9.02	51	9.95	0.75
120	100	44	1.37	8.74	50	11.56	0.97
150	111	46	1.68	7.80	48	12.82	1.23
200	123	48	2.15	7.24	49	15.75	1.54
250	130	46	2.48	6.47	51	17.44	1.82
300	126	55	2.92	5.72	51	17.44	1.82
350	136	56	3.37	5.43	50	20.22	2.76
400	138	58	3.64	4.91	51	20.80	2.73
450	143	58	4.01	4.70	52	22.36	3.00
500	145	59	4.23	4.54	54	23.73	3.01
630	161	59	5.26	4.08	53	29.96	3.89
750	176	60	6.24	3.98	53	29.96	3.89
850	178	61	6.66	3.73	55	33.08	4.77
1000	172	69	7.68	3.11	54	32.17	6.22

The information presented above is typical data and can be changed without prior notice.

Other values are available on request.

Other Mono-phase toroidal transformers:

Three-phase toroidal transformers

Technical characteristics:
Open construction, impregnated
Voltage: on request
Frequency: 50-60 Hz
Protection class: IP 00. Electrical protection: I or II.

More details

Products Three-phase toroidal transformers

Custom made transformers

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