Equivalent of Class A-III Rebar

Hi standards guys,

for a project, we are looking for a rebar with the following physical and chemical properties:

Class A-III, Relative Elongation: 14%; Yield Pt. (kg/mm2): 40; Ultimate Resistance (kg/mm2): 60

Chem'l Composition:

S-0.05; P-0.05; Mn-1.12 to 1.60; Si-0.60 to 0.90; C-0.20 t

E/F Protection

Dear Sirs,

Iwould like to ask about the E/F protection for feeder that Delta /Star Transformer 33/6.6 KV used to feed OHL ( 33KV side not earthed) and using Auto-recloser .

Regards

Atif

Synthetic Brake Fluid

I am redoing the brake system on my antique truck and due to corrosion from the moisture issues with DOT 3 and 4 I would like to use DOT 5 I would like to hear from someone that has converted and hear the pros and cons.

How to Check Seismic Vibration Sensors

Hi,

I wonder if there is a device for checking the characteristics of seismic vibration sensors just like Tk-3 of Bently Nevada is used for checking that of eddy current transducers. There must be a device for that but I do not know if there is.

I actually want to

NEC / IEC Voltage Ranges

pls tell me the range of high, medium and low volatge according to NEC/IEC

if voltage less than 1000V, is it considered as low vaoltage?

and voltage greater than 1000V , is it considered as high Voltage?

what about medium voltage then?

pls i will be gratefull if a