Power alert devices are an investment in safety
Universal Power Alert (UPA) devices from Marsh Bellofram give a clear, visual indication of any residual power within an electrical enclosure, leading to higher levels of safety for operating, service or maintenance personnel. The latest UPA-130 model is a smaller unit which has been designed to be fitted in a standard 30mm diameter panel knockout, while the original UPA-100 fitted a 1.25in size conduit knockout.
Both products enjoy the same operating principles and provide identical levels of safety when fitted to control panels, circuit breaker boxes or other types of enclosed electrical isolating devices. The features include the verification of zero-energy for safe working conditions, or the detection and indication of either single or three phase AC voltages within an enclosed unit. The presence of DC or stored energy is similarly identified. This helps to reduce the potential for arc-flash and electrocution risk for personnel having the responsibility for undertaking maintenance or repairs on electrical machinery or equipment.
The UPA power alert is hard wired to the circuit breaker or other disconnect devices and pre-verifies from the outside of the control panel or enclosure that full electrical isolation exists. The power alert incorporates redundant circuitry and is powered by the same voltage that it indicates, and so identifies hazardous conditions before access is gained to enclosures. It also enhances compliance with NFPA and OSHA recommendations on the control of hazardous energy.
Latest news about Safety products