Max Zs Values

Lookup max Zs values for MCB’s, RCBO’s & fuses + 60947-2 MCCB charts.

Max Zs Values
Price: £4.99
‎Max Zs Values
Price: £4.99

  • Developer
    Pro Certs Software
  • Platform
    Android
  • Platform
    iOS
18th Edition Zs Values
TT RCD Zs Values
MCCB Zs Values
Max Zs Values Chart Download
PDF Electrical Charts

Product Description

Calculate / look up the maximum permitted Zs values ( earth loop impedance ) as per BS 7671 2018. Also includes 80% temperature adjusted values and a some MCCB 60947-2 Zs charts.

 

FEATURES:

  • BS 7671 18th Edition 2018
  • BS EN protective devices
  • Fuse’s
  • MCB’s
  • RCBO’s
  • RCD’s in TT earthing systems
  • Max REC Ze values
  • Ze + R1+R2 = Zs calculator
  • 100% values
  • 80% values
  • 0.4 second disconnection times
  • 0.2 second disconnection times
  • 5 second disconnection times
  • Uo 55v (U 110v) single phase and Uo 63.5v (three phase) Zs values
  • BS EN 60947-2 MCCB manufacture device charts (some)

Download

Download the Max Zs Values app from your preferred app store