Circutor CVM-MINI Series Manual do Utilizador Página 11
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4.1.1 Transformation Ratios
This menu accesses the voltage and current ratios and the voltage and current
primary and secondary may be changed.
4.1.1.1 Voltage primary value
The display shows ”m_n{JlcO” followed by six digits; these allow the setting
of the transformer voltage primary.
To write or change the voltage transformer primary value, repeatedly press the
ma x
key increasing the value of the digit which is flashing at the time.
When the required value is on the screen, move on to the following digit by
pressing
min
, to change the remaining values.
When the last digit has been changed, press
min
to move back to the first
digit, allowing the previously set values to be changed again. To enter the data
and access the next setting process, press .
m_n
JlcO
*****+
Figure 30. Voltage primary ratio
4.1.1.2 Voltage secondary value
The display shows ”m_n{ M_]O” followed by three digits; these allow the
setting of the transformer voltage secondary.
To write or change the voltage transformer secondary value, repeatedly press
the
ma x
key increasing the value of the digit which is flashing at the time.
When the required value is on the screen, move on to the following digit by
pressing
min
, to change the remaining values.
When the last digit has been changed, press
min
to move back to the first
digit, allowing the previously set values to be changed again. To enter the data
and access the next setting step, press
.
m_n
M_]O
{{{**+
Figure 31. Secondary voltage ratio
4.1.1.3 Current primary value
The display shows ”m_n{JlC;” followed by five digits; these allow the setting
of the transformer current primary.
To write or change the current primary value, repeatedly press the
ma x
key
increasing the value of the digit which is flashing at the time.
When the required value is on the screen, move on to the following digit by
pressing
min
, to change the remaining values.
- 1 BASIC INSTRUCTIONS 3
- 1.1 Checks on receipt 3
- 1.2 Main features 3
- 1.3 Electrical parameters 3
- 1.4 Other features 4
- 1.5 Available models 4
- 2 INSTALLATION AND START-UP 5
- 2.1 Installation 5
- 2.2 Start-up 6
- 3 OPERATING MODE 7
- 3.1 Keypad 8
- 3.2 Default settings 8
- ',002(0 9
- 4 SETTING SET-UP 10
- 4.1 Measurement Set-up 10
- resetN 10
- 4.1.1 Transformation Ratios 11
- Capacitive 12
- Inductive 12
- 4.1.4 Display and backlight 14
- 4.1.6 Setting THd or d 15
- {***(*** 16
- Figure 49. Maximum value 18
- Figure 50. Minimum value 18
- Figure 51. Hysteresis / Delay 18
- 4.2 Communication Set-up 19
- 4.2.2 Peripheral number 20
- 4.2.3 Transmission speed 20
- 4.2.4 Parity 20
- 4.2.5 Data bits 21
- 6 MODBUS RTU PROTOCOL 22
- 6.1 MODBUS memory map 23
- Harmonic content in VOLTAGE 25
- Harmonic content in CURRENT 25
- -232 / RS-485 26
- CONVERTER 26
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