Fluke 1744 Manual De Usuario

  

9 

 

A 

Power supply 
leads and 
3-phase plus 
neutral voltage 
test leads 

Power supply voltage range: 88-660 V ac or 
100-350 VDC, 50 Hz / 60 Hz, 600 V CAT III. 
Fixed installed voltage input cables for L1 or A, 
L2 or B, L3 or C, N. 
The highest permissible nominal voltage for power 
supply input is 660 V. 
The highest permissible nominal voltage for signal 
input is 830 V in a 3-wire network with Delta 
connection. 
In a 4-wire network with Wye connection, the 
highest permissible nominal voltage is 480 V. 
When using PTs and CTs for measuring voltage 
and current in a medium-voltage network, refer to 
the IEC 60044 international standard for 
guidelines. 

B 

RS232 
interface port 

The serial RS232 interface is used to communicate 
with a PC. The Logger is connected to the PC’s 
serial port (or a modem for remote communication) 
using the interface cable. Use a USB adapter if 
necessary. 

C 

START/STOP 

The START/STOP button is used to start or end 
switch-operated logging sessions. 

D 

Channel LEDs 

The logging channel LEDs indicate whether the 
applied voltages and currents are within the 
nominal range set using the PQ Log software. 
Continuously on = Logging signal in nominal range 
Short blinks = No or low-level signal 
Long blinks = Overload 

E

 

Power status 
LED 

Continuously on = Power supply voltage in 
permissible range 
Off = No power 

F 

Connector for 
Flexi Set or 
current clamps 

Flexi sets or current clamps are detected 
automatically at power-up. If you change the current 
probe type, be sure to remove and restore power so 
the Logger will detect the new current probe. 
Nominal ranges for the Flexi Set are 15 A, 150 A, 
1500 A, and 3000 A ac. Nominal input for current 
clamps is 0.5 V. 

G 

Logging status 
LED 

Continuously on = Logging in progress 
Blinking = Logging stopped or not started