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Family
Safety Isolating Three-Phase
Transformers
STT/500 Family
- Safety isolating transformers built
according to standards IEC 61558-1,
IEC 61558-2-4 (CEI 96.2) for powers up to
10 KVA
- Single voltage input max. 1000V
- Single voltage output max. 50V
- Class F insulating materials
- Ambient temperature max. 35 °C
- Input/output connectors on terminal block rails or boards with brass screws
- Polycarbonate protection with board and
brass screws, against accidental contacts
in assembling
| Reference Number |
Rated Output |
Dimensions |
Drillings |
Dissipated Power (W) |
Efficiency % |
Weight Kg |
Fig. |
| L |
P |
H |
A |
B |
G |
F |
| STT/501 |
160 VA |
140 |
90 |
135 |
125 |
53 |
14 |
7 |
19 |
88,2 |
5,2 |
3/5 |
| STT/502 |
250 VA |
180 |
90 |
160 |
150 |
66 |
18 |
7 |
26 |
89,6 |
6,5 |
3/5 |
| STT/503 |
400 VA |
180 |
110 |
160 |
150 |
86 |
18 |
7 |
36 |
91 |
9,5 |
3/5 |
| STT/504 |
630 VA |
180 |
120 |
160 |
150 |
96 |
18 |
7 |
48 |
62,4 |
12 |
3/5 |
| STT/505 |
1000 VA |
240 |
130 |
210 |
200 |
96 |
18 |
7 |
73 |
92,7 |
18 |
3/5 |
| STT/506 |
1600 VA |
240 |
155 |
210 |
200 |
121 |
18 |
7 |
101 |
93,6 |
26 |
3/5 |
| STT/507 |
2500 VA |
300 |
144 |
260 |
250 |
124 |
24 |
9 |
143 |
94,3 |
34,3 |
3/5 |
| STT/508 |
4 kVA |
360 |
160 |
310 |
325 |
126 |
24 |
9 |
176 |
95,6 |
46,3 |
4/5 |
| STT/509 |
6,3 kVA |
360 |
170 |
310 |
325 |
136 |
24 |
9 |
233 |
96,3 |
56,9 |
4/5 |
| STT/510 |
10 kVA |
360 |
180 |
310 |
325 |
146 |
24 |
9 |
309 |
96,9 |
74,5 |
4/5 |
| STT/511 |
16 kVA |
420 |
200 |
360 |
375 |
164 |
30 |
10 |
450 |
97,2 |
105 |
4/5 |
 |
The STT/500 transformers are built according to the CE standards CEI 96-2 and international standards IEC 61558-1 and IEC 61558-2-6 .
Standards for safety transformers reach up to the power of 16KVA (see Table). For exceeding powers, other standards must be taken into consideration; although, prior to agreement with manufacturer, transformers with exceeding powers can be built by following the same standards, assembly and testing levels.
This family features a single-voltage input up to 1000V and an output with a max. voltage of 50V AC or 120V ripple free DC between conductors or between any conductor and earth. It is also possible to produce three-phase safety transformers with multi-voltage inputs and outputs (maintaining the above mentioned limits) or with more outputs (where the total voltage remains within these values).
The power values stated on the Table are given according to CE standards, but that does not exclude the possibility in producing transformers of any power, remaining in the 16 KVA limits, prior to agreement with manufacturer.
If the output is star connected, neutral is always supplied in the terminal block.
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