Standards

CEI 85, EN 600051, IEC 414, VDE 0410, UNE 21318, DIN

43780, IEC51.

Cases

• ABS & P.C material.

• Protection degree (CEI 70-1, IEC 529) IP 52 for the case.

• Protection degree (CEI 70-1, IEC 529) IP 00 for terminals.

Accuracy class

All the instruments are manufactured in 1,0; 1,5; 2,5 accuracy class.

Overloads

All amperometric circuits support an overload of 1,2In continuous and 10In for 5 seconds. All voltmetric circuits support an overload of 1,2Vn continuous and 2Vn for 5 seconds.

Working voltage:

650V

Test voltage:

2000V-50Hz / 60Hz, for 1 minute.

Insulation

Insulation reference voltage 0,6 KV.

Working temperature

20°C (± 10°C): working range between -25°C and + 55°C.

Vibrations

± 0.25 mm amplitude at 50 Hz/60Hz (CEI 50-6, IEC 68-2-6).

Humidity

Ambient relative humidity 85% without condensing, with 35°C temperature for max. 60 days per year. Yearly average humidity must not be higher than 65% (DIN 40040).

Tropical version

95% relative humidity, for a maximum of 30 days per year.

Mounting position

The normal execution of our instruments is for vertical mounting. If other mounting positions are known in advance, please indicate the angle of inclination when ordering.

Scales

The full scale deflections correspond to DIN 43701.

The scale divisions correspond to DIN 43802.

Special Executions

Tropical version

Red stroke at any point on the scale

Red strip on the scale

Additional lettering

Anti - reflection glass

Internal illumination (when possible)

Test voltage higher than 2000V

Knife edge pointer and scale with mirror reading

Red pointer adjustable from the exterior

Scale for other ranges

Scale with double numbering

Scale with double stats of numbering divisions.

Moving Iron voltmeters and ammeters

Calibration for other ranges

Range for voltmeters differing from standard series

Range for ammeters differing from standard series

Ammeters with 2In - 3In - 5In overload capacity

Two range ammeters (3 terminal (max 10A)

Calibration for A.C. and D.C. (max 50A)

Separate resistance for 1000V and 1500V

Accuracy class 1 (only 50-60Hz)

Moving coil instruments

Scale with zero point in the middle or displaced

Range differing from standard sizes

Two / Three / Four range voltmeters

Two range ammeters (3 terminals)

Adjustment to other internal resistance for ammeters

Internal resistance for voltmeters from 1 to 600V

1000/V, 4000/V, 10000/V, 20000/V

Separate resistor box for 1000V and 1500V

Suppressed zero

Accuracy class 1

Potentiometer adjustable from the exterior (+/- 20% FSD)

Wattmeters

Scale with zero point in the middle or displaced

Nominal current 5 A (per element)

Power factor meters

Non standard voltage

Reed frequency meters

Non standard voltage

Synchronising instruments and data available on request