Mengenai HHTraff
Free electrical engineering calculators for NZ/AU traffic and field techs.
HHTraff is a free toolkit for electrical and traffic-signal field
technicians working under New Zealand and Australian wiring rules.
CALCULATORS — all offline, all free
• Cable Sizer — pick the smallest cable that handles the load with
temperature and grouping derating applied. Common preset wiring
scenarios make it fast for everyday jobs.
• Voltage Drop — calculate drop using the mV/A/m method for single
and three-phase circuits, with live max-length and max-load
readouts so you can see how much headroom you have.
• Circuit Check — verify a cable, breaker, load and length combo
against AS/NZS 3000 voltage drop limits in one screen.
• Earth Fault Loop — confirm Zs is low enough for the protective
device to disconnect, with both measured and calculated modes.
Calculations are based on AS/NZS 3000 and AS/NZS 3008 reference
data. Always verify against the wiring rules that apply in your
jurisdiction — HHTraff is a reference tool, not a substitute for
the standards or for a qualified electrical worker.
REFERENCE TOOLS — also offline, also free
• Unit Converter — quick conversions for everyday field work:
cable cross-section (mm² ↔ AWG ↔ kcmil), power (W, kW, HP, BTU/h),
temperature (°C, °F, K), and length, area and volume in both
metric and imperial units. Live two-way conversion as you type.
• Cable Colours — regional wire colour reference for NZ/AU,
UK, US (NEC) and EU (CENELEC) installations, plus T568A vs T568B
RJ45 4-pair UTP pinouts for structured-cabling work. Read-only,
no internet needed.
DIAGNOSTIC TERMINAL
HHTraff includes a VT100-style serial terminal for connecting to
traffic-signal controllers (ATSC4, TOPAS 2500B and others) over
USB or Bluetooth. Field technicians can review controller menus,
capture log files to the device, and browse a built-in command
quick reference for common controller families.
WHO IT'S FOR
• Registered electricians on residential, commercial and industrial
jobs in New Zealand and Australia
• Traffic-signal technicians servicing intersection cabinets
• Structured-cabling and data installers needing a quick T568A/B
reference on site
• Apprentices learning the AS/NZS calculation methods
PRIVACY
HHTraff does not collect personal data, location, or analytics.
See phaselogic.app/privacy for full details.
What's new in the latest 1.2.4
Maklumat APK HHTraff
Versi lama HHTraff
Muat Turun Super Pantas dan Selamat melalui Apl APKPure
Satu klik untuk memasang fail XAPK/APK pada Android!






