The CT1700 is an instrument that measures, calculates and displays all main electrical parameters at any electrical network (balance or not). The measuring is true RMS value, through three AC voltage inputs and three AC current inputs (from Current Transformers ---/5A).

It was designed according to EMC and electrical safety standards, and manufactured under the ISO 9001 quality control. It is featured by its high measuring accuracy, its reduced size, and easy assembly mode and a yet economical price. It can be integrated into a communication network through its built-in-RS485/232 output by just using Modbus standard protocol. In addition, it provides two relay outputs (DO) and two alarm inputs (DI) for detection.

FEATURE

‧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

SPECIFICATION

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 capability	Amp. 10A continuous
	50A for 5 sec.
	Volt. 750V continuous
Conversion rate: (about)	about 1/sec.
Input burden	Volt. input ≦ 0.2 VA/phase
	Amp. input ≦ 0.2 VA/phase
Over input indication	"OL"
Line voltage range	60V～700V
Phase voltage range	35V ~ 400V
Current range	20mA ~ 6A
Power factor range	±0.5～±1
Frequency range	45～65Hz
CT, PT scaling factors	1～9999
Setting for REF	0.001 ~ 1.000
Operating temp.	0～60℃
Storage temp.	-10～70℃
Temp. coefficient	≦100PPM/℃(≦60PPM/℃,25℃±10℃)
Max. relative humidity	95%
Dielectric strength	AC 2KV/1min. (input/output/power)
AC 2.8KV/1min. (input/output/power/case)
Surge test	4 KV/1.2 X 50μS, IEC 255-4
Dimensions	96×96×158mm
Mounting	Panel mounting
Protocol	MODBUS, RTU
Baud rate	9600/19200/38400
Address range	1～255
Watt-hour data back-up time	10 years
Aux. power	AC90～260V, 50/60Hz
	DC24V, 48V, 110V±20% (option)
Power consumption	AC6VA, DC5W
Weight (about)	760g