MAIN FUNCTION AND FEATURES

Real time measurement and display of phase current, phase voltage, and line voltage values in power lines
◆ Scalable analog output function, with optional transmission specifications of 4-20mA, 0-20mA, and 0-10mA
Expandable relay switch output function, capable of achieving upper and lower limit alarm output
◆ Scalable RS-485 communication interface, using standard ModBus RTU communication protocol, with adjustable baud rate
◆ Programmable parameters such as instrument current/voltage ratio, upper and lower alarm values, alarm return difference, instrument communication address, communication baud rate, transmission output mode, and transmission output range

Installation dimensions

Model: FS1941/U-2K*
External dimensions (LxH) Unit (mm): 120x120
Opening size (Ss xY) Unit (mm): 111 x 111
Total length (N) (mm): 93
Depth (M) (mm): 78
Model: FS1941/U-9K*
External dimensions (LxH) Unit (mm): 96x96
Opening size (Ss xY) Unit (mm): 92x 92
Total length (N) (mm): 93
Depth (M) (mm): 78
Model: FS1941/U-3K*
External dimensions (LxH) Unit (mm): 80x 80
Opening size (Ss xY) Unit (mm): 76 x 76
Total length (N) (mm): 71
Depth (M) (mm): 68
Model: FS194I/U-AK*
External dimensions (LxH) Unit (mm): 72 x 72
Opening size (Ss xY) Unit (mm): 68x 68
Total length (N) (mm): 71
Depth (M) (mm): 68

Main technical performance and parameters

Accuracy level: 0.5
Input: Voltage - Rated value - AC 100V 450V
Overload - continuous: 1.2 times, instantaneous: 2 times for 5 seconds
Power consumption - ≤ 2VA, (per phase)
Impedance -100V (approximately 120K21, 450V (approximately 600K2)
Current - rated value - AC1A, 5A
Overload - continuous: 1.2 times, instantaneous: 10 times for 5 seconds
Power consumption - ≤ 1VA, (per phase)
Impedance -<20m Ω, (per phase)
Frequency measurement range -45Hz~65Hz
Output: Display method - Three rows of four digit LED digital tubes display the highest resolution of voltage 01V and current 0.001A, with automatic unit switching and decimal point shifting,
Display range - Voltage AC0~999.9KV (FS194U - * K4 is 0~9999V, ammeter AC0~99.99KA (FS1941- * K4 is 0~9999A)
Switching output - same relay output for upper and lower limit alarms, with contact capacities of AC250V/2A and DC30V/2A
Analog output - DC0~10mA, DC0~20mA, DC4~20mA, 0.5 level, output load<500 Ω
Communication - Method - RS-485
Protocol - MODBUS-RTU
Baud rate -1200 bps, 2400 bps, 4800 bps, 9600 bps, 19200 bps, default to 9600bps
Working power supply: range - AC230V, ACDC85-265V
Power consumption -<15VA
Note: The items marked are optional and need to be proposed by the customer when placing an order.