ELECTRODYNAMOMETER TYPE SWITCH BOARD WATTMETERS, VAR METERS & POWER FACTOR METERS  SIZE : 96X96 mm & 144 x 144 mm with narrow black   bezel  RATED ACCURACY : WATTMETERS & VARMETERS ±1.5% FSD } As per    IS 1248/83.   POWER FACTOR METERS ±3°  }BS 89, IEC 51.  CASING : FERRO MAGNETIC  SCALE LENGTH : 96X96 mm      :   90mm Approx   144 x 144mm  : 140 mm Approx  TEST VOLTAGE : 2KV AC for 1 Minute.  INSULATION  RESISTANCE : Over 20 Meg. Ohms at 500 V DC.   MODEL SIZE LOAD CURRENT RANGE (ANY ONE) POTENTIAL RANGE (ANY ONE)           WATTMETERS 96 SQW1 96X96 Single phase 0.5, 1, 2.5, 5, 10A 75, 100, 125, 150, 250, 300, 500, 600V 144 SQW1 144X144 96 DQW3 96X96 3 phase, 3 wire Balanced & Unbalanced 1A or 5A 110V or 440V 144 DQW3 144X144 96 TQW3 96X96 3 phase, 4 wire Balanced & Unbalanced 1A or 5A 110V or 440V 144 TQW3 144X144           VAR METERS 96 DQVAR3 96X96 3 phase, 3 wire Balanced & Unbalanced 1A or 5A 110V or 440V 144 DQVAR3 144X144 144 TQVAR3 144X144 3 phase, 4 wire Balanced & Unbalanced 1A or 5A 110V or 440V           POWER FACTOR METERS 96 SQF1 96X96 Single phase 1A or 5A 110V or 250V or 500V 144 SQF1 144X144 96 SQF3 96X96 3 phase (1 element) Balanced 1A or 5A 110V or 440V 144 SQF3 144X144 96 DQF3 96X96 3 phase, 3 wire Balanced & Unbalanced 1A or 5A 110V or 440V 144 DQF3 144X144 96 TQF3 96X96 3 phase, 4 wire Balanced & Unbalanced 1A or 5A 110V or 440V 144 TQF3 144X144           MODEL A B C D   E  96-SQW1/SQF1/SQF3 96 77 90 92 +0.8 -0.0 11.5  96-DQW3/DQVAR3  96-DQF3/TQW3 96 127 90 92 +0.8 -0.0 11.5  96-TQF3 96 98 90 92 +0.8 -0.0 11.5  144-SQW1 144 90 136 138 +1.00 -0.00 ---  144-SQF1/SQF3/DQW3/DQVAR3 144 135 136 138 +1.00 -0.00 ---  144-DQF3/TQW3/TQVAR3 144 174 136 138 +1.00 -0.00 ---  144-TQF3 144 135 136 138 +1.00 -0.00 ---