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AcuRev 1300
4.8 Incorrect connection detection
AcuRev1300 series instrument has the function of connection detection, Can be set in
the interface to the function that can, in the case of function can make can automatically
detect instrument according to the instrument connection mode of connection is
correct,its principle is as follows:
1. Lack of phase detection: a phase voltage value is 0, as lack of phase.
2. Voltage phase sequence detection: A phase voltage as the reference point, determine
the voltage phase sequence, such as detected by reverse phase sequence, or could be N
lines to meet the current and voltage and voltage is the voltage and the indirect inverse.
To determine the voltage value, such as a two phase voltage values are with another phase
voltage deviation is too large (0.3 times), was convicted for the phase voltage into the N
wrong; Otherwise the sentence to indirect fault voltage, B, C phase fault.
3. Current detection: A phase voltage as the reference point, read the phase current and
voltage between A phase Angle, to judge whether its value and standard value Φ Angle
deviation within 30 °, if meet the requirements, convicted for the current connection
correct; Between Φ +180° ±30°, jailed for current reverse; Other values for the current phase
sequence error.
Visible, the calibration method is suitable for the situation that voltage current Angle
should not exceed 30 ° (Each phase PF value should be greater than 0.866), and is based
on A phase voltage reference direction, therefore should ensure that A phase voltage
connection correct; As A phase voltage phase or connect with N, the current test results do
not have reference meaning; Like the other two phase with A fault, the test result is correct,
but may lead to inconsistent with system parameters.Such as the meter voltage wiring in
order for B, C, A, wiring in the system in order for A, B, C, will cause A phase data does not
match, need to pay attention to.
The address table 100 h can read wiring test results:
Connection test results:
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