Hioki 3481-20 - Voltage Detector Manual

Introduction

Thank you for purchasing the HIOKI "Model 3481-20 VOLTAGE DETECTOR." To obtain maximum performance from the instrument, please read this manual first, and keep it handy for future reference.

This non-contact type of voltage detector unit enables the hot-line state of AC voltage to be checked through the wire or cable covering

When you receive the instrument, inspect it carefully to ensure that no damage occurred during shipping. If damage is evident, or if it fails to operate according to the specifications, contact your dealer or Hioki representative.

This manual contains information and warnings essential for safe operation of the instrument and for maintaining it in safe operating condition. Before using it, be sure to carefully read the following safety precautions.

This instrument is designed to comply with IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, mishandling during use could result in injury or death, as well as damage to the instrument. Be certain that you understand the instructions and precautions in the manual before use. We disclaim any responsibility for accidents or injuries not resulting directly from instrument defects.

Safety Symbol

	In the manual, the symbol indicates particularly important information that the user should read before using the instrument. The symbol printed on the instrument indicates that the user should refer to a corresponding topic in the manual (marked with the symbol) before using the relevant function.
	Indicates a double-insulated device.
	Indicates AC (Alternating Current).
	Indicates DC (Direct Current).

The following symbols in this manual indicate the relative importance of cautions and warnings.

Symbols for Various Standards

	Indicates the Waste Electrical and Electronic Equipment Directive (WEEE Directive) in EU member states.
	Indicates that the product conforms to regulations set out by the EC Directive.

Measurement categories
This instrument complies with CAT IV (600 V) safety requirements. To ensure safe operation of measurement instruments, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT II to CAT IV, and called measurement categories. These are defined as follows.
CAT II: Primary electrical circuits in equipment connected to an AC electrical outlet by a power cord (portable tools, household appliances, etc.)
CAT III:Primary electrical circuits of heavy equipment (fixed installations) connected directly to the distribution panel, and feeders from the distribution panel to outlets.
CAT IV: The circuit from the service drop to the service entrance, and to the power meter and primary overcurrent protection device (distribution panel).
Using a measurement instrument in an environment designated with a higher-numbered category than that for which the instrument is rated could result in a severe accident, and must be carefully avoided. Use of a measurement instrument that is not CAT-rated in CAT II to CAT IV measurement applications could result in a severe accident, and must be carefully avoided.

Usage Notes

Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions.

This instrument is measured on a live line. To avoid electric shock when measuring live lines, wear appropriate protective gear, such as insulated rubber gloves, boots and a safety helmet.

• This instrument is designed for use indoors. It can be operated at temperatures between 0°C and 40°C without degrading safety.
• This instrument is not designed to be entirely water- or dust-proof. Do not use it in an especially dusty environment, nor where it might be splashed with liquid. This may cause damage.
• To avoid damage to the instrument, protect it from physical shock when transporting and handling. Be especially careful to avoid physical shock from dropping.
• Do not look directly into the penlight nor shine the light at another person's eye. Doing so may cause damage to the eye.

The static-induction voltage detection method using static coupling lets you verify the hot-line state of a wire.

* Although a detected current will flow to the ground through your body, the current, which is less than 1 μA, will not adversely affect you.

Examples of inapplicable circuits

Even if you place the instrument into contact with an inapplicable circuit, the instrument may detect AC voltage of adjacent cables/wires, being activated.
Check a voltage using a voltmeter when in doubt.

Performance Check and Voltage Detection

The maximum rated voltage between input terminals and ground is 600 V AC. Attempting to measure voltages exceeding 600 V with respect to ground could damage the instrument and result in personal injury.

• The white LED indicates battery consumption but is not a guarantee of the performance of the instrument. Be sure to check its performance using a known power source (e.g., AC outlet) prior to use.
• The instrument voltage detector works using a live AC circuit. It will not work using an earthed wire or neutral point. If there are several lines, such as 2-phase wires and 3-phase wires, perform voltage detection on each line separately.
• The instrument cannot perform voltage detection on a shielded wire. (See the below figure.)
  
  
• Be sure to grip the instrument firmly during measurement. But, do not touch the portion beyond the barrier. It will not produce any detection.
• Make sure the detecting element properly contacts the object to be measured. (See the below figure.)
  

Basic Specifications

Electrical Specifications

If a malfunction is suspected