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1744/1743
Users Manual
6
• Connect clip-on current transformers and/or Flexi Set
to insulated live conductors only.
• If measuring sensors are to be connected to non-
insulated live conductors, additional personal
protective measures must be taken as required by local
government agencies.
W Caution
To avoid damage, use the 1744/1743 Power Quality Logger,
only with the following nominal voltages:
• Single-/3-phase, 4-wire (Wye) systems (P-N): 69 V
to 480 V
• 3-phase 3-wire(Delta) systems (P-P): 120 V to 830 V
WX Warning
To avoid electrical shock, or damaging the Logger’s
internal protective circuitry or weatherproof seal, do not
open the Logger.
Qualified Personnel
The following qualifications are required for using the Logger safely:
• Trained and authorized to switch on/off, ground (earth), and mark
power distribution circuits and devices in accordance with electrical
engineering safety standards.
• Trained or instructed in safety engineering standards for maintaining
and using appropriate safety equipment.
• Trained in first aid.
Standard Equipment and Optional Accessories
Table 2 lists the standard equipment for the 1744/1743 Power Quality Logger,
and Table 3 lists optional accessories.