36
Fuse:
Use only a 500 mA (FF) 1000 V 32 x 6 mm ceramic fuse of high breaking capacity HBC
50 kA minimum. Glass fuses MUST NOT
be fitted.
Safety Protection
The instruments meet IEC 61010-1 to 600 V phase to earth, Category IV. *
Refer to safety warnings (see section 2).
*MIT 405 IEC 61010-1 600 V phase to earth Category III
Application
IEC 61010 defines measurement categories from I to IV relating transient over voltages and
the location within electrical installations. This instrument is designed for use at Category IV
(Primary supply level) on 600 V phase to earth systems.
E.M.C.
In accordance with IEC 61326-1
Temperature effects
Temperature coefficient <0,1% per °C up to 1 G
<0,1% per °C per G above 1 G
Environmental
Operating range: -20ºC to +55 °C
Operating humidity: 95% RH at 0ºC to +35ºC, 70% RH +35ºC to +55ºC
Storage temperature range: -30ºC to +80 °C
Calibration Temperature: +20 °C
Maximum altitude: 2000 m
Dust and water protection: IP54
20. Basic and service errors
The basic error is the maximum inaccuracy of the instrument under ideal conditions,
whereas the service error is the maximum inaccuracy taking into effect of battery voltage,
temperature, interference, system voltage and frequency, where applicable.
20.1 Basic error: See section 19
20.2 Service error:
Insulation range ±15% ±2 digits
Continuity range ±26% ±2 digits
Resistance range ±12% ±2 digits
Voltage range ±10% ±2 digits
Capacitance range ±18% ±2 digits
Distance range ±18% ±2 digits
Frequency range ±5% ±2 digits
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