Solar working station operation manual SR881
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Power terminal : L, N,GND
Input ports L, N is power connection terminal, please connect correctly.
is Ground line terminal.
Sensor input ports
Input sensor ports T0: for NTC10K, B=3950 sensors, used for measuring the temperature of
collector and measuring the heat output.
Input sensor ports T1: for Pt1000 sensors, used for measuring the temperature of collector
and measuring the heat output.
Input sensor ports T2, T3
,
T4: for NTC10K, B=3950 sensors, used for measuring the
temperature of tank.
Advice regarding the installation of temperature sensors:
Only original factory enclosed Pt1000 temperature sensors are approved for use with the
collector, it is equipped with 1.5meter silicon cable and suitable for all weather conditions,
the temperature sensor and cable are temperature resistant up to 280
o
C, not necessary to
distinguish the positive and negative polarity of the sensor connection.
Only original factory enclosed NTC10K,B=3950 temperature sensors are approved for use
with tank and pipe, it is equipped with 1.5meter PVC cable, and they are temperature
resistant up to 105
o
C, not necessary to distinguish the positive and negative polarity of the
sensor connection.
All sensor cables carry low voltage, and to avoid inductive effects, must not be laid close to
230 volt or 400-volt cables (minimum separation of 100mm)
If external inductive effects are existed, e.g. from heavy current cables, overhead train
cables, transformer substations, radio and television devices, amateur radio stations,
microwave devices etc, then the cables to the sensors must be adequately shielded.
Sensor cables may be extended to a maximum length of ca. 100 meter, when cable’s length
is up to 50m, and then 0.75mm
2
cable should be used. When cable’s length is up to 100m,
and then 1.5mm
2
cable should be used.