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Installation
ABB Control - AC 31
Page 4-9
1SBC 260400 R1001-b
06.99
1.5. Different power supply types
The main differences between them concerns the connection of the neutral and the metallic
parts to the earth:
- T-T neutral: The neutral is connected to the earth. All the metallic parts are earthed
(see Figure 4-10).
- I-T neutral: The neutral is isolated in relation to the earth and the metallic parts are
earthed (see Figure 4-11).
Each cabinet (including the 24 V version), in a disturbed environment, should be fitted with an
isolated shielded transformer.
Summary of Contents for AC 31
Page 1: ...Technical Manual Advant Controller 31 40 50 Series 1SBC 260400 R 1001 b ...
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Page 45: ...Technical specifications Page 3 2 ABB Control AC 31 1SBC 260400 R1001 b 06 99 ...
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Page 85: ...Installation Page 4 2 ABB Control AC 31 1SBC 260400 R1001 b 06 99 ...
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Page 130: ...Programming ABB Control AC 31 Page 5 21 1SBC 260400 R1001 b 06 99 ...
Page 182: ...Communication ABB Control AC 31 Page 7 11 1SBC 260400 R1001 b 06 99 ...
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Page 218: ...AC 31 technical documentation ABB Control AC 31 Index Page 1 1SBC 260400 R1001 b 06 99 Index ...