2024年9月21日 · R1+R2 is the sum of the resistance between line and earth. On a certificate there is a column handily titled R1+R2. It's in this column where the figure is entered. You …

2009年6月26日 · , r1 + r2 testing, Periodic Inspection Reporting & Certification, ElectriciansForums.net Est.2006 | Free Electrical Advice Forum and page_number.

2011年11月25日 · This is r1, rn and r2 (lower case). The R1+R2 of the ring circuit is( r1+r2)/4 and is a mathematical check. The measured R1+R2 is the cross connection of line and cpc to …

2019年9月30日 · if you consider the mid point of a ring, the current is shared equaly by each leg. so that equates to a divide by 2. the r1 reading is both legs in series do that equates to …

2024年9月21日 · 1) To obtain Zs in a radial circuit, you do Zs = Ze + (R1 + R2). "R1 + R2" value can be obtain for example, by connecting line and cpc at CU then connecting test probes to …

2008年3月24日 · There are two reasons to measure R1 + R2 earth loop impedance which is unlikely to be a limiting factor especially after July 1st and the volt drop the latter needs R1 …

2022年11月4日 · You can calculate from resistance of copper tables the expected rn and expect that r1 will be about the same then multiply by 1.67 in the case of modern cable (2.5/1.5=1.67) …

2011年1月18日 · Easiest way to calculate R1 + R2 of a ring circuit is divide the end-to-end resistance of the phase conductor added to the end-to-end resistance of the cpc by 4 (r1+r2)/4 …

2015年7月29日 · Upon undertaking a conditon report and the circuits have been energised for many years. Do you measure r1+r2 or just do Zs/Ze and calculate r1+r2. For socket circuits …

2021年9月13日 · R1 (L1) + R2 (E) R1 (L2) + R2 (E) R1 (L3) + R2 (E) for example. Click to expand... Yeah so that’s ok to link l1 l2 l3 all to earth and there for take reading at all 3 phase …