Vertical Hollow Shaft Motor
DESCRIPTION
National Motors’ NVHS Series consists of motors designed for fire pump applications as specified in NFPA 20 (Standard for the Installation of Stationary Pumps for Fire Protection).
They are certified by UL as per the requirement of UL 10045 ‘Standard for Fire Pump Motors’. These Vertical Hollow Shaft three-phase asynchronous motors are constructed and manufactured as per the requirements of NEMA MG 1 standard Design B.
The Weather Protected Type I Enclosure of these motors minimizes the entrance of rain and air-borne particles to the electric parts. Steel mesh screens are added to the enclosure at appropriate locations to further enhance the protection.
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RATINGS
SERIES: NM, WP1 ENCLOSURE
2 Pole
Rated Output | 20 HP – 100 HP |
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Rated Voltage | 380 – 415v (50 & 60Hz) |
Rated Speed | 2929 – 2941 RPM (50Hz) & 3515 – 3529 RPM (60Hz) |
4 POLE
Rated Output | 15 HP – 400 HP |
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Rated Voltage | 380 – 415v (50 & 60Hz), 208 – 230v (60 Hz), 460v (60 Hz) |
Rated Speed | 1465 – 1488 RPM (50Hz) & 1758 – 1789 RPM (60Hz) |
FEATURES
- Frequency: 50 & 60 Hz
- 1.15 Service Factor
- 50°C Ambient Temperature rating
- Angular Contact Ball Bearing
- 2 / 4 Pole
- UL File No. EX26863
- Stainless Steel name plate
- RAL 3000 Standard red painted
- Non – Reversible Ratchet Device
- Altitude rating of 1000 meters above sea level
- NEMA MG1 Design Standard
- Low Noise & Low Vibration
- Suitable for various standard starters such as across the line, wye-delta, soft starter etc.
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