Main Features And Functions - CHINT NJG2 Operation Manual

For load derating, please refer to Table 3.
Model
Resistance
Power Factor
Amplification
1.5 times
Factor
5

Main Features and Functions

NJG2 SSRs are switching devices that use semiconductor components to replace
contact contacts. Photoelectric isolation is provided between the input and output
ends. When a control signal is applied to the input end, the output end can change
from the off state to the on state. The RC loop inside the SSR output terminal may
generate leakage current. It is normal for small loads to have conduction or output
voltage. The voltage drop across the output thyristor during conduction can result
in heat generation within the SSR, therefore needs to be used with a heatsink.
The output voltage and current marked on the SSR represent rated values, which
need to be derated when selecting a SSR for a particular application. The derating
coefficients can vary depending on the type of load. Especially for inductive loads,
protection should be provided by connecting a varistor in parallel at the output end
of the SSR.
Overall & Installation Dimensions and Weight
6
For the overall and installation dimensions, pleases refer to Figure 1 and 2. The
weight is indicated on the label of the product package.
Table 3: Load Derating
Pure
Heating
Wire
1.0 0.7
2 times
Figure 1: Single-phase SSR
Incandescent
Transformer Electromagnet
Lamp
0.5 0.4
2.5 times 4 times
06
Single-phase
Motor
0.5 0.2
4 times 7 times
Three-phase
Motor
0.3
6 times