After using a couple of e-werk for the last three years I came-up with the following conclusions:
1 From an electrical point of view nothing to say: well performing, excellent voltage and current regulation, either working as AC/DC and DC/DC converter, good input insulation. Not totally sure about its efficiency level.
2 Input and output leads, i.e. AC input and DC output wires are coloured all over the same (black&white); IMO different colour coding for AC and DC should have been used instead.
3 From a mechanical point of view things appear to be a bit different:
- Inlet and outlet connections are too short
- Inlet and outlet wires with the respective glands seem to guarantee a good IP protection but mechanical continuous stress on TB welding points finally ends-up with local breakage
- Very difficult to open because the two shells seem to be glued together
- Once the device has been open, repairing isn’t easy at all and the interrupted wires, due to their very short length, must be replaced with new ones
- After repairing and reclosing the two halves of the device, the IP protection might not to be as good as the original one
- In the meantime I took the opportunity to change leads colour distinguishing in the between AC and DC wires, positive and negative polarity
- I replaced the short connections with new and longer ones
- I finally reclosed everything and thoroughly tested the device for voltage regulation and battery charging
|The job is complete, my e-werk is working again !!!|