Frequently Asked Questions

The front-end fence is an important component of the electric fence system. To ensure the normal operation and long service life of the entire electric fence system, the front-end fence must have basic functions such as high voltage resistance, pollution resistance, oxidation resistance, and corrosion resistance.

The front-end fence consists of dozens of accessories including terminal poles, terminal insulators, fixed clamps, intermediate poles, intermediate insulators, strain poles, strain insulators, tensioners, alloy wires, high-voltage insulated wires, warning signs, lightning arresters, U-shaped hanging seats, wire connectors, terminal pole rain caps, metal pole rain caps, sound and light alarms, etc. Each accessory is professionally designed and custom-produced for electric fences, featuring beautiful appearance, easy installation, and easy maintenance.

EU/International Electrotechnical Commission (IEC) leads the international standards related to electric fences. The current standard is IEC60335-2-76 (Safety of household and similar electrical appliances - Part 2: Particular requirements for electric fence energizers).

IEC60335-2-76 is one of the IEC60335 (Safety of household and similar electrical appliances) series standards. As required by EU/IEC, electric fences must also comply with IEC60335-1 (corresponding to GB4706.1 - Safety of household and similar appliances - Part 1: General requirements).

New Zealand/Australia Standards (AS/NZS 60335.2.76:2003):

• Energy output limits for electric fences under standard load: IEC/EN requirement must not exceed 5J (joules)
• Electromagnetic Compatibility (EMC): AS/NZS does not require electromagnetic tolerance for electric fences

US Standards (UL69):

• Requirements for housing and mechanical structure of electric fence controllers
• Output characteristics requirements and test methods for electric fence controllers

For security electric fences, output energy determines the system's protective function:

3 Joules: Medium output energy, electric shock feeling like needle prick, strong warning to stop illegal climbing, completely eliminating false alarms, system effective function includes electric shock isolation + detection alarm + psychological deterrence.

Nearzenith Technologies electric fence hosts adopt harmonic output mode, which has stronger penetration and longer instantaneous transmission distance advantages.

Nearzenith Technologies electric fence hosts can adjust alarm voltage thresholds and monitor feedback voltage to achieve fence short-circuit and open-circuit alarm ranges, adapting to different protection sites.

Affected by the above factors, in long zones, industrial environments, wilderness, and complex electromagnetic environments, 0.5-3J electric fences have small output energy, and pulse energy is overly affected by resistive attenuation, leakage attenuation, capacitive gain, and inductive mutations, resulting in low false alarms, too low output pulse voltage leading to protection failure.

5 Joule models can effectively reduce missed and false alarm rates caused by the above factors, and alarm accuracy improves as output energy increases.

The actual output voltage and output energy of electric fences will attenuate under different external loads. Generally, voltage increases with load, and energy increases then decreases with load.

The electric fence system mainly consists of the following parts:

• Host Equipment: Electric fence controller, responsible for generating high-voltage pulse signals
• Front-end Fence: Alloy wires, insulators, support poles, and other physical barriers
• Alarm System: Sound and light alarms, linkage control equipment
• Power System: Batteries, solar power supply system (optional)
• Control System: Keyboard control, remote monitoring software

The installation of electric fences must meet the following basic requirements:

• Environment Requirements: Avoid installation near strong magnetic fields or strong electric fields
• Spacing Requirements: Maintain safe distances between the fence and ground, buildings
• Grounding Requirements: The host must be reliably grounded, with grounding resistance less than 10Ω
• Power Requirements: Use dedicated power supply, avoid sharing with other high-power equipment
• Maintenance Requirements: Regularly check wire tension, insulator status, and host working status

Host not working:

• Check if power supply is normal
• Check if fuse is blown
• Check internal wiring connections of the host

Frequent false alarms:

• Check for interference sources nearby
• Adjust sensitivity and alarm thresholds
• Check if front-end fence causes false alarms due to weather

No high voltage on front-end fence:

• Check if high-voltage wires are broken
• Check if insulators are damaged
• Use multimeter to detect host output voltage