RAB XFMR200-480-277 Step-Down Autotransformer Instructions
- June 9, 2024
- RAB
Table of Contents
RAB XFMR200-480-277 Step-Down Autotransformer
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IMPORTANT
READ CAREFULLY BEFORE INSTALLING TRANSFORMER. RETAIN THESE INSTRUCTIONS FOR
FUTURE REFERENCE.
RAB transformer must be wired in accordance with the National Electrical Code
and all applicable codes.Proper grounding is required for safety.
IS PRODUCT MUST BE INSTALLEDIN ACCORDANCE WITHTHE APPLICABLE INSTALLATION CODE
BY A PERSON FAMILIARWITHTHE CONSTRUCTION AND OPERATION OF THE PRODUCT AND THE
HAZARDS INVOLVED.
WARNINGS:
- Risk of fire or electric shock. Transformer installation requires a qualified electrician. If not qualified, do not attempt installation.
- The transformer shall be used within Recognized ratings as specified in “ELECTRICAL RATINGS
- The transformer shall be mounted in the intended manner in an enclosure having adequate strength and thickness with acceptable spacings being provided.
- The necessity of repeat Temperature Test shall be determined in the end use application.
- The transformer employs a 105°C Class A insulation system.
- Leakage current was not evaluated. The need of leakage current test is to be determined for each end product application.
- The suitability of primary and secondary pins shall be determined in the end-product investigation.
- The suitability of mounting means shall be determined in the end-product investigation.
- The transformer is only suitable for factory installation.
- The transformer has been evaluated at ambient temperature (Tmra) of 25°C.
- Normal operating temperature range:-30°C- +45°C, Storage temperature range:-30°C-+80°C
ELECTRICAL SPECIFICATIONS
| INPUT CHARA CTERISTICS | OUTPUT CHARACTERISTICS |
|---|---|
| Input Voltage | I nput Current at Max Load |
Maximum Outp ut Current
480V| 0.46A| 2S0V| 200VA| 0.8A
347V| 0.6SA| 2S0V| 200VA| 0.8A
WYE 48OV OR GROUNDED DELTA POWER
WIRING DIAGRAM
Wiring Notes:
- Wiring for 3-Phase Wye (or Star) 480V system, connect any two phase wires to autotransformer inputs (red and black wires).
- Wiring for 3-Phase Delta 480V system with proper grounding, connect 480V and ground reference legs to autotransformer inputs (red and black wires).
Easy Answers
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Cranbury, New Jersey 08512 USA
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