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A Guide to This material is for information purposes and as general guidance only. It is not necessarily deemed definitive and is subject to change without notice. Seaward and its associated companies accept no 17th Edition Testing responsibility for any errors or consequential loss or damage which may arise from misinterpretation of the information or procedures.
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Our Testers are at the forefront. Today’s world moves at an unprecedented The Seaward Installation System. Less paper and less hassle. pace. Everything’s smarter, smaller and faster. This is good news for us, and for you.
Tried. Tested. Trusted. Introduction 2. Check of phase sequence (Regulation 612.12) i. Continuity of circuit protective circuit is the resistance of the circuit protective 3. Functional testing (Regulation 612.13) conductors (CPC) conductor (R ) and should be equal to the value Regulation 610.1 of BS 7671:2008 IEE Wiring...
Tried. Tested. Trusted. ii. Continuity of earthing conductor and iv) measure the resistance (r ) of the protective ii) Link L to N and L to N Note: Any sockets wired as spurs will have a protective bonding conductors...
The use of a four terminal test instrument EQUIPMENT DISCONNECTED insulation resistance must be at least 1MΩ. resistance value. such as the Seaward ERT 1557 eliminates the The resistance measured at the extremity of the resistance of the test leads. SWITCHES...
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Some earth resistance test instruments, such as Thus, 200Ω may be taken as a maximum ‘rule of spike P2 initially positioned midway between the Seaward ERT 1557, have a measurement Method 3 Earth loop impedance measurement thumb’ value. the earth electrode and the current spike C2.
Tried. Tested. Trusted. B. Tests with the electrical supply connected Test Procedure Preparation for Testing C.U. 1. Select the appropriate range on the 1. All power using equipment must be WITH 1. Earth fault loop impedance test instrument. disconnected from sub circuit(s) under test.
For single phase domestic ii) Continuity of circuit protective installations, a 500V insulation resistance test is conductors (CPC) required. the PowerPlus 1557 and PowerTest iii) Continuity of earthing and protective 1557 are capable of such tests. bonding conductors Please see table below.
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Tried. Tested. Trusted. MAXIMUM ALLOWABLE MEASURED VALUES of Zs USING 0.8 ‘RULE of THUMB’ METHOD Protection Disconnection 100A 125A 160A 200A Device Time BS3036 0.4s 7.66 2.04 1.42 0.87 fuses 5.0s 14.16 4.28 3.06 2.11 1.27 0.89 0.42 BS88 0.4s...
Start your test & inspection Print certificates Built-in 17th edition certificates The only tester to feature fully integrated Start your inspection - the PowerPlus 1557 will Because the built-in 17th edition Certificates are test certificates for easy, efficient and accurate testing.
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Impedence, Line Impedence, RCD Trip Current and Loop voltage measurements up to method. It is one of the most to the PowerPlus 1557 tester. test and inspection results and PSC, PFC, RCD Trip line, RCD Verification. 1000AC or DC and a dual...
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