Communicating measurement or metering box

Provides surveillance and monitoring of an overhead substation. The boxes consist of a pole-mounted transformer and a protective device (fuse-protected panel or circuit breaker).

Main features

The pole-top measurement or metering box gives LV distribution network operators the ability to access the following information remotely :

• Mean value load curve over amounts U, I, P, cosϕ
• Recording and time-stamping of maximums and averages over U,I (maximum demand indicator function) and P
• Monitoring of voltage thresholds and local transformer balancing
• Monitoring of loads and load totals on the transformer
• Metering function (with a daily total of active and reactive energy)
• Detection of supply interruptions
• Alarms (on disconnection, on exceeding the threshold, and more))
• Communication of alarms or data (GSM module, GPRS, Ethernet link)

The most common make-up of the measurement and metering box:

• Polyester composite enclosure boxes, whose dimensions and shapes vary according to the choice of the measurement device and the user’s expressed needs,
• 1 pole mounting bracket,
• 1 measurement or metering unit (or standby board with a terminal),
• 1 communication module using GSM/GPRS,
• 1 set of current-voltage sensors for external application,
• 1 sensor connecting beam of a defined length

This equipment can be prepared and configured in various ways :

• With a pre-connected measurement or metering device that has been factory programmed and calibrated to create a device ready to be installed and commissioned
• Without measuring equipment to let the user manage the supply to measurement and metering devices separately.

3 versions are available:

• Monitoring box without measuring or metering equipment (with standby U and I links)
• Monitoring box with a multi-functional measurement unit
• Monitoring box pre-equipped with a three-phase meter

Advantages

• Configurable solution according to the customer’s specifications.

Uses

• Rural Environments