Motor Yorlig'ini O'qish

Sinxron Tezlik

n_s = 120 × f / p, bu yerda f — chastota (Hz), p — qutblar soni.

Slip

s = (n_s − n) / n_s × 100%, bu yerda n — nominal aylanish tezligi (AYD). Odatiy sirpanish: standart motorlar uchun 2–5%.

Torque

T = P × 9550 / n (Nm), bu yerda P — kVt dagi quvvat, n — AYD.

Efficiency

η = P_out / P_in = P / (√3 × V × I × cos φ). Can be estimated from nameplate data.

Izolyatsiya sinflari

Class	Maksimal chulg'am harorati	Atrof-muhit + ko'tarilish + issiq nuqta
A	105°C	40 + 60 + 5°C
E	120°C	40 + 75 + 5°C
B	130°C	40 + 80 + 10°C
F	155°C	40 + 105 + 10°C
H	180°C	40 + 125 + 15°C

IE Samaradorlik Sinflari (IEC 60034-30-1)

Class	Level	Min. η (example: 11 kW, 4-pole, 50 Hz)
IE1	Standard	87.6%
IE2	High	89.8%
IE3	Premium	91.4%
IE4	Super Premium	93.3%
IE5	Ultra Premium	~94.6% (indicative)

IE1–IE4 values are the nominal efficiency limits of IEC 60034-30-1:2014 for this one example rating (11 kW, 4-pole, 50 Hz) — limits differ for every power rating, pole count and frequency. IE5 was only informative in the 2014 edition (Annex A, ~20% lower losses than IE4); normative IE5 limits were introduced in IEC 60034-30-1:2025 — the IE5 figure shown is indicative.

IP Himoya Darajasi Izohi

IP stands for Ingress Protection. First digit = solids protection (0–6), second digit = water protection (0–9).

• IP55 — Changdan himoyalangan, har qanday yo'nalishdan suv oqimlariga qarshi himoyalangan
• IP65 — Changga o'tkazmaydigan, suv oqimlariga qarshi himoyalangan
• IP66 — Changga o'tkazmaydigan, kuchli suv oqimlariga qarshi himoyalangan