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CTEC-1700A 是一只能在電力網路內量測、計算並顯示所有主要電力參數的多功能電表，所提供的數據，是經由三相電壓及三相電流輸入所得到的真有效值（TRMS）。
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CTEC-1700A多功能集合式電錶(需量、諧波) CTEC-1700A多功能集合式電錶（需量、諧波）是一只能在電力網路內量測、計算並顯示所有主要電力參數的多功能電表，所提供的數據，是經由三相電壓及三相電流輸入所得到的真有效值(TRMS)。 CTEC-1700A依據EMC(電磁相容)及國際安規之要求所設計，並在ISO 9001品質管理下所生產的電表；他的特點是高精度、小尺寸、易安裝及低價位。利用其內裝的RS485/232介面及Modbus通信協定，能輕易和其他通信網路結合；此外，他還提供兩組繼電器告警接點輸出(DO)，及兩組告警接點輸入(DI)。 CTEC-1700A多功能集合式電錶（需量、諧波）特性 ?Harmonic distortion measurement THD-V & RTHD-A(31st) ?Up to 21st harmonic analysis of V and A ?LCD back-light display ?2-alarm input (DI) ?2-alarm output (DO) V, A, W or Demand ?Demand measurement and alarm output ?Measurement of zero-phase current ?Precision True-RMS measurement ?RS485/232 communication interface ?PT and CT scaling ?10-year memory for all setup and energy data ?Auto calibration from computer ?Max, Min and Hold function ?Output DC 4 ~ 20mA and Pulse (option) ?96×96×158mm DIN case 詳細規格 Display: 4 digits (9999) LCD back-light(V, A, W, VAR, PF, Hz) 5 digits (99999) LCD back-light(WH, VARH)Accuracy: (at 23 ± 5℃ sine wave)Voltage± 0.1% of reading ± 0.1% of range Current± 0.1% of reading ± 0.1% of range VA± 0.2% of reading ± 0.2% of range Watt± 0.2% of reading ± 0.2% of range Var± 0.2% of reading ± 0.2% of range Powe Factor± 0.5% of reading Watt Hour± 0.2% of reading ± 1 count Var Hour± 0.2% of reading ± 1 count Hz± 0.05% of reading Harmonic± 0.2% of fundamental Demand± 0.4% of reading ± 0.2% of range Max. input over capabilityAmp. 10A continuous 50A for 5 sec. Volt. 750V continuous Conversion rate: (about)about 1/sec. Input burdenVolt. input ≦ 0.2 VA/phase Amp. input ≦ 0.2 VA/phase Over input indication"OL" Line voltage range60V～700V Phase voltage range35V ~ 400V Current range20mA ~ 6A Power factor range±0.5～±1 Frequency range45～65Hz CT, PT scaling factors1～9999 Setting for REF0.001 ~ 1.000 Operating temp.0～60℃ Storage temp.-10～70℃ Temp. coefficient≦100PPM/℃(≦60PPM/℃,25℃±10℃) Max. relative humidity95% Dielectric strengthAC 2KV/1min. (input/output/power) AC 2.8KV/1min. (input/output/power/case) Surge test4 KV/1.2 X 50μS, IEC 255-4 Dimensions96×96×158mm MountingPanel mounting ProtocolMODBUS, RTU Baud rate9600/19200/38400 Address range1～255 Watt-hour data back-up time10 years Aux. powerAC90～260V, 50/60Hz DC24V, 48V, 110V±20% (option) Power consumptionAC6VA, DC5W Weight (about)760g |