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b) Relative humidity: 5% ～ 9 5% （ ( There is no dew or ice inside the product.)
c) Atmospheric pressure: 86kPa
3 Hardware
The demand of reliability is fully considered for overall design and design of each module. In the fields of
program execution, signal indication, and communication, elaborate consideration have been given out. Therefore,
when the panel-assembly operations for this device are made or when the device is mounted on the switch cabinet,
additional AC, DC input anti-interference modules do not need to be installed.
3.1 Cubicle structure
This device adopts the integral form, including English LCD, signal indicating light, operating keyboard, etc.
This cubicle adopts entirely enclosed design of waterproof, dustproof and anti-vibration, to ensure its high
reliability when installing in severe field environment.
3.2 AC module
The AC module includes two parts of voltage input and current input, and there are different numbers for
voltage and current input components of different types.
Voltage input component is constituted by voltage converter. When its input is AC 100V, the output is AC
3V. The output linear range is form 0.4V to 120V.
Current input component is composed of current converter and shunt resistors.
There are three specifications.
1 ） TA used when rated current is 5A: when input is 100A, output is 5/
form 0.2A to 100A.
2 ） TA used when rated current is 1A: when input is 20A, output is 5/
100mA to 20A.
3 ） TA used for measurement and zero-sequence: when input is 5.5A, output is 5/
range is from 20mA to 6A.
Contact: sales@bueno-electric.com
1 06kPa
～
6
BUENO ELECTRIC
BUENO ELECTRIC
BUENO ELECTRIC
BUENO ELECTRIC
2 V, and the input linear range is
2 V, and the input linear range is form
2 V, and the input linear
Fax: +86-25-51816989
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