Problems faced by temporary power management at construction sites

• Management neglect and chaos on site: The project is subcontracted layer by layer, the power management level is uneven, and the site is chaotic; due to management neglect, the power supply at the construction site is not standardized; the cross-operation is very arbitrary, the lines are chaotic, and the risk of electric shock increases.
• No equipotential connection: The construction site is a place without equipotential connection. Under the same fault conditions, the risk of electric shock to death at the construction site is greater.
• Harsh environment and reduced insulation level: The construction site is a place with harsh environment. Harsh climatic conditions such as wind, rain, and sun make the electrical insulation level decrease; the operation of many transport vehicles and construction machinery makes electrical equipment and lines susceptible to collision and crushing, resulting in mechanical damage.
• Frequent site changes cause mechanical damage: The distribution boxes, sockets, wires and cables used for construction need to be frequently changed, and the entire construction site is a temporary electrical device; frequent movement and transportation are very likely to cause mechanical damage to equipment and lines, leaving potential accidents.
• Power inspection and monitoring rely on manual labor, with limited means: no timely alarm and monitoring for line damage, sparking, and overheating; no early warning for aging facilities, and no power and current limits; single leakage protection switch, no detection for failure; no technical means to protect the closing and closing of the switch, and no hierarchical control.
• Workers' skin is wet and the impedance decreases: construction workers working on the construction site are often splashed with water and rain during work, which makes their skin wet and the human body impedance decreases; handheld and mobile electric construction tools are difficult to get rid of.

EXACT 's temporary power management solution for construction sites

(I) Overview of EXACT 's solution

• Make the construction site power use rely on scientific and technical specifications to be implemented. The supervision and inspection that used to be done manually can be directly supervised online through EXACT 's intelligent air switch and the cloud platform that supports it.
• Power management is efficient, has no blind spots, and is precise. The platform and APP can directly see various power data of each device, such as leakage, sparking, overload, etc.
• The power planning can be flexibly adjusted at any time according to needs, and it can be freely controlled, which changes the previous old-fashioned power management method.
• For the group construction group, the headquarters can directly monitor all construction sites, and the top management can directly obtain first-hand electricity information.

(II) EXACT solution design

(III) EXACT solution highlights

Automatic inspection, electricity planning can be adjusted at any time: daily, weekly, monthly, start-up and resumption of work inspections are automatically scheduled, completed in seconds, and form standard reports; electricity plans can be adjusted at any time, management is simple and effective, and the work of management and electricians is simplified, reducing manpower and increasing efficiency.

The leakage protection threshold can be automatically adjusted: the leakage protection threshold can be configured according to weather and humidity changes. For example, the leakage threshold of manually operated motors on rainy days is configured to 15mA or less
Switch opening and closing exclusive authority: during work or maintenance, the operating electrician has the only authority, and other people cannot open and close the switch manually or remotely; the distribution box and switch box do not need to be locked for an hour.

The EXACT solution can set the on-duty electrician as the only management authority to open the switch, and other people cannot close the switch manually or remotely to use electrical equipment.

Automatic judgment of closing conditions: During the process of opening and closing of switches at all levels, the upper switch cannot be opened before the lower switch is opened, and the lower switch cannot be closed before the upper switch is closed.

Alarms such as sparking, overload, overcurrent, etc.: Alarms such as sparking, overload, overtemperature, overcurrent, etc. and automatic power off; the power and current threshold of a certain switch can be set, overload alarm and power off to prevent multiple electrical equipment from being connected in parallel, multiple electrical equipment from being connected, or the use of overpowered equipment.