A-05
Purpose
The digital ammeter A-05 is intended for measurement of size of current in chains of alternating current with a frequency of 50 Hz. The ammeter is equipped with the switch allowing to use it with various transformers of current with current of a secondary winding – 5 A.
The digital ammeter A-05 is intended for measurement of size of current in chains of alternating current with a frequency of 50 Hz. The ammeter is equipped with the switch allowing to use it with various transformers of current with current of a secondary winding – 5 A.
Design of system
The ampermeter of digital A-05 is executed in the case for installation on a DIN lath.
On the forward panel of the block there is a digital indicator and the handle of the SETTING of PRIMARY CURRENT switch.
Power-supply circuits and measurements are galvanic divided.
In the lower part of the block there are terminal blocks for connection of the block to networks and to a secondary winding of the transformer of current. Power supply of the relay it is carried out directly from a controlled network.
Warranty period – 2 years.
Technical characteristics
Preparation for operation and operation
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.
The ampermeter of digital A-05 is executed in the case for installation on a DIN lath.
On the forward panel of the block there is a digital indicator and the handle of the SETTING of PRIMARY CURRENT switch.
Power-supply circuits and measurements are galvanic divided.
In the lower part of the block there are terminal blocks for connection of the block to networks and to a secondary winding of the transformer of current. Power supply of the relay it is carried out directly from a controlled network.
Warranty period – 2 years.
Technical characteristics
| Characteristic |
Value |
|
Supply voltage |
220±10% V; 50 Hz |
| Range of measurements (depending on the connected current transformer) | 0…400 А |
| Face values of primary current of the connected transformers |
25; 50; 75; 100; 150; 200; 250; 300; 400 А |
| Rated secondary current |
5 А |
| Maximum (short-term) current, no more |
4хI nominal А |
| Power consumption, no more |
10 W |
| Method of measurement | mean square |
| accuracy rating |
1,0 |
| Time of updating of indications |
0,36 s |
| Габаритные размеры блока |
71х90х60 mm |
| Weight, no more |
0,2 kg |
| Range of working temperatures (without condensate) | -40…+45 °С |
Preparation for operation and operation
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.