 | National Electric Light Association. Convention - 1912 - Страниц: 780
...portions of the Code rules will read as follows: "Transformer secondaries of distributing systems must be grounded, provided the maximum difference of potential...and any other point in the circuit does not exceed 150 volts." "When no neutral point or wire is accessible, one side of the secondary circuit must be... | |
 | National Electric Light Association. Convention - 1912 - Страниц: 776
...recommended changes provide that transformer secondaries of distributing systems must be grounded when the maximum difference of potential between the grounded point and any other point in the circuit docs not exceed 150 volts. If no neutral point or wire is accessible, one side of the secondary circuit... | |
 | National Electric Light Association. Convention - 1913 - Страниц: 842
...The principal point, however, is that the new rule will contain the provision that circuits in which the maximum difference of potential between the grounded point and any other point does not exceed 150 volts must be grounded, and that when the maximum difference of potention between... | |
 | Charles Edwin Knox - 1907 - Страниц: 336
...the neutral point or wire, whenever a neutral point or wire is accesible. 2. When no neutral point or wire is accessible, one side of the secondary circuit...3. The ground connection must be at the transformer or on the individual service as provided in sections d, e, f, g, and when transformers feed systems... | |
 | Henry Charles Horstmann, Victor Hugo Tousley - 1908 - Страниц: 352
...neutral point, or wire, whenever a neutral point or wire is accessible. 2. When no neutral point or wire is accessible, one side of the secondary circuit...3. The ground connection must be at the transformer or on the individual service as provided in sections c to g, and when transformers feed systems with... | |
 | Fidelity and Casualty Company of New York - 1909 - Страниц: 222
...normal conditions of service there will be no passage of current over the ground wire, and (b) that the maximum difference of potential between the grounded...other point in the circuit does not exceed 250 volts. The "Fire Underwriters" do not permit grounding of a twowire direct-current system having no accessible... | |
 | Fidelity and Casualty Company of New York - 1909 - Страниц: 224
...normal conditions of service there will be no passage of current over the ground wire, and (b) that the maximum difference of potential between the grounded...and any other point in the circuit does not exceed 2 50 volts. The "Fire Underwriters" do not permit grounding of a twowire direct-current system having... | |
 | Electrical World - 1913 - Страниц: 304
...secondaries should be made to the neutral point or wire if one is accessible. Where no neutral point is accessible one side of the secondary circuit may...other point in the circuit does not exceed 250 volts. Fig. 3 shows theoretical diagrams of ground connections to transformer secondaries, and Fig. 5 illustrates... | |
 | New Jersey. Board of Public Utility Commissioners - 1913 - Страниц: 780
...Systems." "ALTERNATING CURRENT SECONDARY SYSTEMS." "b. Transformer secondaries of distributing systems must be grounded provided the maximum difference of potential...and any other point in the circuit does not exceed 150 volts, and the following rules must be complied with :" (1 and 2 omitted here.) "3. The ground... | |
 | New Jersey. Board of Public Utilities - 1913 - Страниц: 806
...Systems." "ALTERNATING CURRENT SECONDARY SYSTEMS." "b. Transformer secondaries of distributing systems must be grounded provided the maximum difference of potential...and any other point in the circuit does not exceed 150 volts, and the following rules must be complied with :" (1 and 2 omitted here.) "3. The ground... | |
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When no neutral point or wire is accessible, one side of the secondary circuit may be grounded, provided the maximum difference of potential between the grounded point and any other point in the circuit does not exceed 250 volts. 
