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Service & Info Letters

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Info Letters

01: Measurement Transformers in Three-Phase Networks (Part 1)
02: Measurement Transformers in Three-Phase Networks (Part 2)
03: The E-Coil in General
04: Summation of Alternating Currents
05: Zero Sequence Voltage in Three-Phase Networks
06: Detection of Transient Earth Faults
07: Load-Dependent Voltage Change
08: Apparent Power and Reactive Power in Three-Phase Networks
09: Voltage Regulation With Step Transformers in Parallel to Busbars (Part 1)
10: Voltage Regulation With Step Transformers in Parallel to Busbars (Part 2)
11: Voltage Regulation With Step Transformers in Parallel to Busbars (Part 3)
12: E-Coil Control: Resonance Curve Procedure – Location Curve Procedure
13: Parallel Operation of Step Transformers
14: Earth Fault Location Using the Harmonic Procedure (Part 1)
15: Earth Fault Location Using the Harmonic Procedure (Part 2)
16: Hot-Spot Temperature and Service Life of Transformers
17: Transient Relay for High Resistance, Intermittent and Recurrent Earth Faults (Part 1)
18: Transient Relay for High Resistance, Intermittent and Recurrent Earth Faults (Part 2)
19: The Evaluation of Power Quality and Detection of Interference in Medium Voltage Networks
20: Capacitance of Conductors
21: The Influence of the Contact Resistance at the Earth-Fault Location on the Zero Sequence Voltage UEN in Compensated Networks
22: Definition of Power Measurements According to the Standards DIN 40110-2 Und IEEE 1459
23: Direction of Harmonics Sources of Harmonics in the Power System

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