120v to 480v transformer
[DOCX File]GE Grid Solutions
https://info.5y1.org/120v-to-480v-transformer_1_3d19cf.html
The voltage transformer inputs shall be rated for 100/120V or 380/480V AC and shall have a continuous rating of 2 times the rated voltage. The inputs shall have a short time thermal withstand capability of 2.6 times the rated voltage for 10 sec.
[DOC File]TECHNICAL SPECIFICATION
https://info.5y1.org/120v-to-480v-transformer_1_9f2e28.html
Control power: Internal, 460V, 3-phase. Control circuits at 120V via transformer. The cooling fan operates from line voltage. Load control circuits and fan motor control operate at 120V and control logic at 24V via control power isolation transformers. Control circuits are fused.
[DOC File]1 - Baylor ECS
https://info.5y1.org/120v-to-480v-transformer_1_178b0c.html
Typically, a transmission voltage sag passes through two levels of transformers before reaching a 480V load (e.g., 138kV:12.47kV at the entrance to the facility, and 12.47kV:480V at the load). 120V loads likely have a third transformer (e.g., 480V:120V).
[DOC File]SECTION 262200 - LOW-VOLTAGE TRANSFORMERS
https://info.5y1.org/120v-to-480v-transformer_1_b4706a.html
This section describes dry type transformers to provide [240V/120V single phase][208V/120V three-phase wye] power from the 480V/277V three-phase wye system. Size transformers as shown on the drawings.
[DOC File]TECHNICAL SPECIFICATION
https://info.5y1.org/120v-to-480v-transformer_1_8cada6.html
a. Type R3 segregated 480V/120V control section including load control branch circuit contactors/fuses, 480V power distribution bus, 480V input terminals from fused circuits, control power transformers, malfunction detection relay panel, cooling fan motor starter, control circuit disconnect, control logic panel, local control panel.
[DOC File]1
https://info.5y1.org/120v-to-480v-transformer_1_5b254f.html
Power isolation transformer: The medium-voltage load bank shall be equipped with an isolation type, power transformer to step down the applied voltage to the load bank voltage of 480V AC, 3-phase. 1.4.4.1 Transformer shall be dry type, aluminum or copper wound, VPI …
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