Distribution

Outdoor High-Voltage Metering and Prepayment Assembly

This outdoor prepayment assembly combines a high-voltage CT/PT metering unit with a ZW32F boundary switch. It provides energy measurement and feeder protection in a floor-mounted enclosure, with segregated high-voltage and metering compartments.

Zero-sequence, overcurrent and instantaneous protection are combined with FTU control; GPRS remote operation is an option. The published environment is −40 °C to +40 °C, altitude up to 3,000 m and pollution level IV. Rated voltage, CT/PT ratios and protection settings are confirmed for the utility connection.

Technical Specifications

Installation	Outdoor, floor-mounted
Ambient Temperature	−40 °C to +40 °C
Altitude	≤ 3000 m
Pollution Level	Class IV
Main Assembly	High-voltage metering unit + ZW32F boundary switch
Metering Unit	Epoxy-resin cast CT/PT unit
Protection	Zero-sequence / overcurrent / instantaneous trip
Remote Control	FTU; GPRS optional

Key Features

High-voltage CT/PT metering with a ZW32F boundary switch.
Segregated metering and high-voltage compartments.
Zero-sequence, overcurrent and instantaneous protection.
FTU control with optional GPRS remote operation.

Typical Applications

Industrial customer supply metering
Residential-area supply metering
Metering and protection beside compact substations

Installation & Aftercare

Prepare the site, plan routine checks and keep service records.

What needs to be ready before installation?

Agree the high-voltage connection, CT/PT ratios, utility metering requirements and protection settings before fixing the layout.
Provide a stable mounting position with accessible meter reading and authorised service access, protected from vehicle impact and standing water.
Select cable glands, enclosure protection and earthing for the actual location; retain the meter’s specified operating environment.

What should operators check during routine rounds?

Check the display, communication or prepayment alarms and enclosure seals; report damaged utility seals through the authorised metering process.

What is covered during planned maintenance?

At planned isolation, authorised personnel inspect wiring and terminals for looseness, corrosion, heat damage or moisture.
Keep meter identification and service records current; calibration and billing-related changes follow the responsible utility or meter provider’s requirements.

Customization Options

Define the electrical configuration and the details needed for your site.

Metering arrangement: High-voltage CT/PT ratios, meter type, accuracy requirements and utility sealing requirements.
Prepayment function: Required payment or tariff interface and compatibility with the nominated meter and utility system.
Circuit protection: ZW32F boundary-switch rating and zero-sequence, overcurrent and instantaneous protection settings.
Outdoor enclosure: Floor-mounting interface, cable entries, sealable access and corrosion-protection requirements.

Project-specific options and accessories are confirmed in the quotation and approved drawings.