HC
HC
This document provides technical specifications and details for analogue frequency meters, specifically the M1-30 model, designed for measuring frequency in alternating current circuits. These instruments are noted for their accuracy and ease of reading, even with voltage distortions up to 15% in the third order harmonic.
Specifications
- Class: 0.5
- Frequency Range: 50 to 400 Hz
- Overload Capacity: 1.5 times nominal current (permanent), 15 times nominal current (for 1 second)
- Accuracy: 0.5% Full Scale
- Operating Temperature: +10 to +30 ºC
- Limit Temperature: -25 to +40 ºC
- Altitude: Up to 2000 meters
- Standards: BS 89, EN 60051, IEC 144, UL 94, DIN 43780, IEC 51, UNE 21318
Build Features
Dimensions and weight vary by model type, with detailed measurements provided in tables. The degree of protection for the front panel and terminals is specified, along with insulation voltage requirements.
Models and Dimensions
The document lists various models (HC, HZC, HM) with specific dimensions and weights. Models are categorized by frequency range and scale (90º or 240º).
- HC Models: Available in sizes 48, 72, 96, and 144 mm with weights ranging from 95g to 425g.
- HZC Models: Available in sizes 96 and 144 mm with weights of 180g and 520g respectively.
Applications
These frequency meters are suitable for applications requiring precise frequency measurement in AC circuits, maintaining accuracy despite voltage distortions.
Catalog excerpts
Analogue instruments Pointer Frequency meters Analogue indicator to measure frequency Input circuit Measurement voltage Accurate and easy reading of frequency in alternating current circuits. The distortion of voltage (we shall measure its frequency) Operating temperature Limit temperature can reach 15% of the nominal voltage in the third order harmonic, while the Class is not affected. Ambient conditions Build features Dimensions See the following table panel Degree of protection: Front panel Terminals Insulation voltage Standards Coding table Internal Code Standard (45...55 Hz)
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Analogue instruments Pointer Frequency meters Analogue indicator to measure frequency Pointer Frequency meters, 90º Pointer Frequency meters, 240º Frequency meters, 90º
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