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google.com

https://play.google.com/store/apps/details?id=com.pro_certs.maxzs&hl=en_US&gl=US

This Maximum Zs Values app contains Zs tables, charts and calculators all relating to the maximum permitted Zs values of BS 7671. A great electrical app to have at hand when you most need it for checking or calculating the maximum permitted Zs ( earth loop Impedance) values. Max Zs Values is designed for Android tablets and phones. Content Rating: Everyone login

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procertssoftware.com

https://www.procertssoftware.com/max-zs-values/

Max Zs Values is an easy to use Zs calculator for looking up and calculating the maximum permitted Zs value for RCBO’s, RCD’s, MCB’s, fuses and some manufacture MCCB’s. Earth loop impedance (Zs) is measured in ohms. Spending hours hunting for max Zs tables and Zs values is now thing of the past with this Max Zs Values app. login

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procertssoftware.com

https://www.procertssoftware.com/blog/max-zs-values-18th-edition-bs-7671/

Max Zs Values 18th Edition BS 7671 Max Zs Values 18th Edition BS 7671 We have received a number of emails regarding the 18th edition max Zs values so we have created this post for the 18th edition maximum Zs values chart. The maximum Zs values for BS7671 18th edition have not changed from the 17th edition wiring regulations to the 18th edition 2018. The 17th edition regulations amendment 3 introduced the Cmin (0.95) factor which reduced the old maximum zs values to allow for the fluctuation of the voltage. The Cmin factor is applied to the voltage to earth (Uo), so if the voltage is 230 the calculation would be 230×0.95 = 218.5 volts See ❯ for further info on the Max Zs Values app. Max Zs Values App Save yourself the hassle of calculating maximum Zs values with the Max Zs Values App. Extensive Zs values database Also includes some manufacturer MCCB Zs tables + Extra contentMax Zs Values | BS 7671 & On Site Guide Max Zs Values | BS 7671 & On Site Guide BS 7671 (big blue book) shows the 100% maximum Zs values. The On Site Guide (little blue book) shows the temperature adjusted Zs values having applied the 0.8 correction factor. ​The 100% values should be recorded as the maximum permitted Zs value on the electrical test certificate and the temperature adjusted 80% values are used to compare against the actual readings obtained when testing the circuit.60947-2 Max Zs Values 60947-2 Max Zs Values The max Zs of 60947-2 devices vary from manufacturer to manufacture hence why BS EN 60947-2 MCCB max Zs values chart is not in BS 7671 or the On Site Guide. Many manufactures have charts for their 60947-2 MCCB’s on their website. Our app has a number of Zs charts for manufacture specific BS EN 60947-2 MCCB’s.

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niceic.com

https://www.niceic.com/Niceic.com/media/Pocket-Guides/Pocket-Guide-18.pdf

The values of Zs in Tables 1 and 2 are based on the ‘worst case limits’ of BS 7671. Some manufacturers’ protective devices operate at higher values of Zs than the values shown. Where a measured value of Zs exceeds the value given in Table 1 or 2, as applicable, a more precise assessment of compliance with Regulation 411.4.5 or 411.5.4 may be login

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djtelectricaltraining.co.uk

https://www.djtelectricaltraining.co.uk/downloads/max%20zs%20table.pdf

The values of Zs in Tables 1 and 2 are based on the ‘worst case limits’ of BS 7671. Some manufacturers’ protective devices operate at higher values of Zs than the values shown. Where a measured value of Zs exceeds the value given in Table 1 or 2, as applicable, a more precise assessment of compliance with Regulation 411.4.5 or 411.5.4 may be login

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theiet.org

https://www2.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=35007

Mar 11, 2009 . Thanks. Dave. This depends on what you are adjusting, if the thermal (Ith)or overload is being adjusted then the max Zs stays the same as its the magnetic element (I inst or Im) that dictates the Zs requirments. The magnetic element on Merlin MCCBs is usually 10x the rated current and the PSCC required is marked on the front of the device.

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electriciansforums.net

https://www.electriciansforums.net/threads/max-zs-values.186593/

Jul 14, 2020 . Hey all im just trying to learn max zs values from a NICEIC chart i have, now learning these values isnt a problem but the sections reffering to bs3036 fuses and type D mcbs both have two lists of readings - one each for 0.4s and 5s trip times - where as the sections for type B and C only have single lists. login

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hbomax.com

https://www.hbomax.com/

HBO Max is a stand-alone streaming platform that bundles all of HBO together with even more TV favorites, blockbuster movies, and new Max Originals for everyone in the family. Stream Friends, Looney Tunes Cartoons, Wonder Woman, the Studio Ghibli collection, and so much more.. HBO is the streaming option for all of HBO, including original series, movies, specials, and more. login

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electricalsafetyfirst.org.uk

https://www.electricalsafetyfirst.org.uk/media/1627/master_earthfaultlooptable.pdf

MAXIMUM EARTH FAULT LOOP IMPEDANCE VALUES FOR OVERCURRENT PROTECTIVE DEVICES IN COMMON USE, FOR FAULT PROTECTION For fault protection, the limiting values of earth fault loop impedances, Z s, are given in Tables 41.2, 41.3 and 41.4 of BS 7671, for many commonly-used overcurrent protective devices. login

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apple.com

https://apps.apple.com/gb/app/max-zs-values/id498838137

Description. Look up the maximum Zs values for MCB's, Fuses, MCCB's and ACB's with 100% values and the temperature adjusted values all in one place. Calculate and look up the maximum permitted Zs value ( earth loop impedance ) to BS 7671. Max Zs Values also includes the 80% temperature adjusted values and a some MCCB 60947-2 manufacture Zs charts. login

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eaton.com

http://trcsupport.eaton.com/Industrial-Control-Circuit-Protection/Molded-Case-Breakers/1072981931/Zs-values-for-series-G-MCCB.htm

Zs values for series G MCCB ? Please refer below document for earth / ground loop impedance (Zs) values on series G breakers. Max Zs Data MCB MCCB.pdf. login

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alliedelec.com

https://www.alliedelec.com/m/d/8c21e18b379ec0036ca62b7fc678450a.pdf

The maximum values of earth fault loop impedance (Zs) of 240V for Cooper Bussmann gG fuses to BS 88: Parts 2 and 6 are: Rating (A) Zs (Ohms) Rating (A) Zs (Ohms) Rating (A) Zs (Ohms) 6 14 50 1.1 250 0.16 10 7.7 63 0.86 315 0.13 16 4.3 80 0.60 400 0.096 20 3.0 100 0.44 500 0.073 login

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appannie.com

https://www.appannie.com/en/apps/google-play/app/com.pro_certs.maxzs/

This Maximum Zs Values app contains Zs tables, charts and calculators all relating to the maximum permitted Zs values of BS 7671. A great electrical app to have at hand when you most need it for checking or calculating the maximum permitted Zs ( earth loop Impedance) values. Max Zs Values is designed for Android tablets and phones. login

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apple.com

https://apps.apple.com/us/app/max-zs-values/id498838137

Feb 11, 2012 . Description. Maximum Zs values for common MCB's, RCBO's and fuses along with some manufacturer MCCB Zs tables. Calculate and look up the maximum permitted Zs value ( earth loop impedance ) as per BS 7671. Max Zs Values also includes the 80% temperature adjusted values and a some MCCB 60947-2 manufacture Zs charts. - 100% BS … Copyright: © 2011-2021 Pro Certs Software Ltd Seller: Pro Certs Software Ltd Price: $4.99 Category: Reference login

Copyright: © 2011-2021 Pro Certs Software Ltd

Seller: Pro Certs Software Ltd

Price: $4.99

Category: Reference

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dormansmithswitchgear.com

http://dormansmithswitchgear.com/wp/downloads/Max_Zs_Earth_loop_impedance_values.pdf

Zs Values for YB MCCBs Maximum Allowable Earth Loop Impedance Values For Loadline MCCB Circuit Protection Devices In accordance with BS7671 MCCB REFERENCE S/C Protection Zs values @ 230 Volts Setting In 0.4sec 5 sec YB1 1P Thermal / Magnetic 16 0.32 1.38 20 0.32 1.14 25 0.32 0.89 32 0.32 0.71 YB1N, 25 kA 40 0.32 0.57 login

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youtube.com

https://www.youtube.com/watch?v=R8sfoiMiBx8

Max Zs Values. Calculate the maximum Zs values, earth loop impedance. Download: http://itunes.apple.com/gb/app/max-zs-values/id498838137?ls=1&mt=8 BS7671 for...

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voltimum.co.uk

https://www.voltimum.co.uk/articles/methods-determining-zs

Jul 11, 2013 . Values of (R1 + R2) are measured using a ohmmeter with a low range, such as 0 to 20 Ω, having a no-load voltage of between 4 V and 24 V d.c. or a.c., and a short-circuit current of not less than 200 mA (Regulation 612.2.1 refers) Determining the measured value of Zs from the results of Ze and (R1 + R2) tests

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theiet.org

https://communities.theiet.org/discussions/viewtopic/1037/24565?post_id=122529

The question is why is the maximum permitted measured Zs = BS7671 Max Zs x 0.8 (appendix 3 page 363). I know it is to do with colder conductors, its the 0.8 factor used, as the table in the On Site Guide do not seem to match is they are at 10⁰C. Guidance note 3 gives the 0.8 as the temperature correction. With the values of Zs in the On Site ... login

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google.com

https://play.google.com/store/apps/details?id=com.pro_certs.maxzs&hl=it&gl=US

This Maximum Zs Values app contains Zs tables, charts and calculators all relating to the maximum permitted Zs values of BS 7671. A great electrical app to have at hand when you most need it for checking or calculating the maximum permitted Zs ( earth loop Impedance) values. Max Zs Values is designed for Android tablets and phones. login

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