Devices Ц42303 are inteded for measurement of active and reactive capacity in three-phase circuits of an alternating current, executed in panelboard execution, in a dimention 120x120 mm.  

       According to ТУ 25-7504.164-2002 at the order of wattmetters and warmeters it is necessary to aspecify the following parameters:

      1) Way of connection on a current 5A, 1/I₂; 5/I₂; 10/I₂; 15/I₂; 20/I₂; 30/I₂; 40/I₂; 50/I₂; 75/I₂; 80/I₂; 100/I₂; 150/I₂; 200/I₂; 300/I₂; 400/I₂; 500/I₂; 600/I₂; 750/I₂; 800/I₂; 1000/I₂; 1200/I₂; 1500/I₂; 2000/I₂; 3000/I₂; 4000/I₂; 5000/5; 6000/5; 8000/5; 10000/5; 12000/5; 14000/5; 16000/5; 18000/5; 20000/5; 25000/5; 28000/5; 30000/5; 32000/5; 35000/5; 40000/5
      I₂ gets out equal 1А or 5А, depending on type of the transformer,

      2) Way of connection on a voltage 127В, 220В, 380В, 380/100; 660/100; 3000/100; 6000/100; 10000/100; 15000/100; 35000/100; 110000/100; 150000/100; 220000/100; 330000/100; 500000/100; 750000/100,

      3) Frequency 50 Hz or 60 Hz,

      4) Symmetric or asymmetric loading  (S or As)

      Example of record of a designation of a wattmeter Ц42303 on rated voltage 220V , rated current 5А, a normal rate 50 Hz, with symmetric loading:

"Wattmeter Ц42303, 220 V, 5 А, 50 Hz, S, ТУ 25-7504.164-2002"

      Example of record of a designation of a wattmeter Ц42303 with factor of transformatio on a voltage 10000/100, factor of transformation on a current 5000/5, a normal rate 50 Hz, with asymmetrical loading (As):

"Wattmeter Ц42303, 10000/100, 5000/5, 50 Hz, As, ТУ 25-7504.164-2002".