I. Core Safety Distance Nkyerɛkyerɛmu ma Low-Voltage Cabinets
Ahobanbɔ kwansin ho nkyerɛkyerɛmu a ɛfa kabinet a ɛwɔ ahoɔden a ɛba fam ho no gyina ɔman gyinapɛn "GB/T 7251.1-2017 Low-Voltage Switchgear ne Controlgear Assemblies" ne "GB 50054-2011 Low-Voltage Power Distribution Design Specifications" so titiriw. Akontaabu ho ahwehwɛde pɔtee ne nea edidi so yi:
1. Anim adwumayɛ kwan: Anyɛ yiye koraa no 800mm (fixed cabinet) anaa 1000mm (drawer-type cabinet), hwɛ hu sɛ adwumayɛbea a ɛdɔɔso ma adwumayɛfo a wɔhwɛ so bere a wɔabɔ fam anaa wogyina hɔ (wɔatwe adwene asi so fi GB 50054, Ɔfa 4.2.5).
2. Akyi nsiesie kwan: Anyɛ yiye koraa no 600mm, anaasɛ anyɛ yiye koraa no 800mm sɛ ɛho hia sɛ wɔkɔ akyi pon mu a.
3. Lateral aisle width: Sɛ wopɛ double-row nhyehyɛe a, ɛsɛ sɛ anyɛ yiye koraa no, cabinets ntam kwan yɛ 1000mm; wɔ nhyehyɛe a ɛwɔ row biako-abɔfasu ho no, anyɛ yiye koraa no, ɛsɛ sɛ wogyaw kwan a ɛyɛ 200mm wɔ nkyɛnkyɛn.
Nsɛm foforo a Ɛsɛ sɛ Wohyɛ no Nsow:
- 800mm anim kwan no gyina mpaninfoɔ nsa span (bɛyɛ 700mm) so, a allowance ma adwinnadeɛ a wɔde di dwuma.
- Drawer-type cabinets hwehwɛ sɛ wɔtrɛw mu bio efisɛ ɛsɛ sɛ wɔtrɛw drawer ahorow no mu koraa.
II. Ahwehwɛde Titiriw a Ɛfa Ahobammɔ Ho Nneɛma a Ɛboro Low-Voltage Cabinets So
Wɔtaa bu ani gu ahobammɔ kwan a ɛwɔ kabinet ahorow a ɛwɔ ahoɔden a ɛba fam so no so, nanso ɛde asiane ahorow ba ma ɔhyew a wɔsɛe no ne ahoɔden a ɛkɔ soro a wɔayi afi afoforo ho:
1. Top Clearance: Ɔde ne nsa kyerɛɛ ne so.
- Standard low-voltage cabinets: Ɛboro anaasɛ ɛyɛ pɛ 300mm (ɔhyew a wɔsɛe no ahwehwɛde);
- Sɛ busbar a ɛwɔ ahoɔden a ɛkorɔn-wɔ kabinet no atifi a: Ɛboro anaasɛ ɛne 1200mm yɛ pɛ (wɔatwe adwene asi so firi Ɔfa 4.3.3 a ɛwɔ GB 50054 mu).
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