详细说明
AT28A-92，AT28A-93三相电流表，AT28V-92，AT28V-93三相电压表，AT28P-92，AT28P-93三相有功功率表，AT28Q-92，AT28Q-93三相无功功率表，AT28C-92，AT28C-93三相功率因数表，AT28W-92，AT28W-93三相功率，功率因数组合表，AT28DP-92，AT28DP-93三相有功电能，三相无功电能表，AT28AC-92，AT28AC-93三相综合表，
AT28A-6T2，AT28A-6T3三相电流表，AT28V-6T2，AT28V-6T3三相电压表，AT28W-6T2，AT28W-6T3三相有功功率，无功功率表，AT28AC-6T2，AT28AC-6T3三相综合表，
