ST ( D ) product range
The TECNED ST (D) Static Transfer Switch series is available with single phase input /output and
current ratings from 25A to 500A.
The ST (D) series can be supplied as a 1-pole or 2-pole static switch to meet customer
requirements for safety and reliability. Standard features include source select, auto source and
source lock, input V metering, mains S1-S2 out of tolerance alarm and general alarm with potential free contacts.
The ST (D) includes a digital controller with LCD display that shows the systems current state of
operation and system values, allows setting of system parameters and includes event and alarm logs.
Option list ST (D)
- Extend to 12x PFC (NO/NC) with LED
- Mimic diagram with Individual fuse/breaker failure indicator
- Fan failure alarm
- 3-position mechanical bypass
- Up to 6 (DIN 96) meters / cabinet
Tecned ST (D) Specifications
| Input | Voltage | 110/120/200/220/230/240/277V, (2W+E) |
| Voltage tolerance | 180 / 264 Vac (Ph-N) | |
| Frequency | Frequency 50Hz / 60Hz | |
| Frequency window | 2-10% adjustable | |
| Output | Transfer type | Break before make |
| Transfer methods | Automatic / Manual / Remote | |
| Transfer time | < 4 msec (S1-S2 synchronized) | |
| < 11 msec (S1-S2 not synchronized) | ||
| Overload | 150% for 1 min. / 200% 10 seconds | |
| Power Factor | 0.6 lag to 0.9 lead | |
| General | Ambient temperature | -20 to +70 °C storage / -10 to +40 °C operation |
| Altitude above sea level | 1000 m | |
| Enclosure | Aluzinc frame / powder coat RAL 7035 | |
| Standards | Safety IEC/EN 62040-1 / EMC 55011 | |
| Conformity | IEC 60146 / CE-Label |
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