A-05 DC
Purpose
The ammeter of digital A-05 (DC-2) is intended for control of a direct current with the external shunt of 75 mV.
Range of measurements of current 100-1000 A (depending on the connected shunt) with an accuracy of 1% ± 1 sign of the younger category of the indicator with mean square data processing. The class of accuracy of the shunt has to be not worse 0,5.
Design of system
On the forward panel of the device the switch of a scale of the primary is installed current that allows to use one product with various shunts.
Power supply of the A-05 (DC-2) ampermeter is carried out from a network of a direct current =220 V or alternating current of 220 V, 50 Hz are also galvanic divided from measuring entrance.
Warranty period – 2 years.
Technical characteristics
| Parameter | Value |
| Supply voltage | 220±10% V; 50 Hz |
| Range of measurements (depending on from the shunt) | 100…1000 А |
| The rated voltage of the shunt (at rated current) | 75 mW |
| Isolation resistance, not less | 2,0 MOhm |
| Power consumption, no more | 5 W |
| Accuracy rating | 1,0 |
| Method of measurement | mean square |
| Functional installation: setting of primary current | switch |
| Face values of primary current of the shunt | 100,150,200,250,300,400,500,600,750,1000 |
| Dimentions | 71х90х60 mm |
| Section of wires for connection of the block | 1,0…1,5 mm2 |
| Weight, no more | 0,2 kg |
| Range of working temperatures (without condensate) | -25…+45 °С |
Preparation for operation and operationя
Before operation it is necessary to study the maintenance instruction of the digital A-05 ammeter.
To install the block in an electroboard on a DIN lath.
To make connection of an entrance controlled network, power-supply circuits
according to marking (to Fig. 1.): A1, A2 – power supply; S1, S2 – secondary
current transformer winding. Section of the connected wires has to be
1,0 … 1,5 mm²
To make connection at the de-energized inputs of a network!
It is forbidden to open the block which is energized networks.
