КЗА — NPP "VEL"

Distinctive features:

The controller measures and displays the voltage applied to the "Usupply(meas)" input. The measured voltage also serves as the controller's supply voltage.
To control the inverter, the controller has output contacts (a changeover group) marked "Inverter".

Purpose and principle of operation:

The controller manages a stand-alone power system consisting of a battery bank, a charger, an inverter and an ATS circuit.

The controller can
- monitor the battery voltage, with a digital display of the present battery voltage;
- control the charger and issue an inverter start/stop signal according to the state of the grid and the battery's depth of discharge;

Distinctive features:

The measured voltage also serves as the controller's supply voltage.
КЗА versions by operating voltage: 12 V; 24 V; 48 V; 60 V; 96 V; 120 V; 240 V; 360 V; 480 V.
To control the inverter, the controller has output contacts (a changeover group) marked "Inverter".
To control the charger, the controller has output contacts (a changeover group) marked "Charger".
Limits of permissible fiducial error for voltage measurement: ±1%
Timing accuracy: better than 2%
Power consumption no more than 2 W
Permissible voltage between the supply (measuring) circuits and the relay output contacts — 1 kV
Mechanical life of the output contacts: 10⁷
Electrical life at 1.5 A, 250 V AC, cos φ>0.5: 10⁵
Maximum switched current at 300 V DC: 150 mA
Maximum voltage switched by the output contacts, AC/DC: 400/300 V
Conductors connected via terminal blocks; conductor cross-section: 0.5-2.5 mm²
Overall dimensions: 72×72×97 mm
Time to initial readiness after power-up: no more than 3 s
Panel cut-out size: 68×68 mm
Weight: max 200 g
Operating temperature range: -25 - +55 °C
Protection rating per ДСТУ ГОСТ 14255:
-enclosure: IP 40
-connector IP 20
Service life: at least 10 years

Replacing 132×132 and 172×172 analogue panel instruments with digital panel instruments made by NPP VEL