Transformer Socket Assembly for Power Meter Conversion
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Solution Overview
Problem
The installation of transformer-rated meters in place of self-contained meters is a time-intensive and costly process, particularly due to the need for complex wiring and the exposure of service personnel to high voltage and current levels, which poses safety risks and inefficiencies in high-voltage, high-current service scenarios.
Innovation Solution
A circuit assembly that includes a socket adapter with electrical connections to compact assemblies of current and voltage transformers, allowing for the conversion of a self-contained meter circuit to accommodate a transformer-rated meter, thereby reducing the voltage and current exposure during installation and providing a safer, more efficient transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transformer-rated meters are installed in place of self-contained meters, then safety is improved by reducing voltage and current exposure, but installation time and cost increase due to complex wiring requirements
Solution Approach 1:
The patent integrates current transformers and voltage transformers into a compact assembly that fits within the existing meter enclosure. The socket adapter contains electrical connections that interface with both the power service and the meter, nesting multiple functional components (transformers, socket, wiring) into a single integrated unit that can be installed as one assembly rather than multiple separate components requiring extensive wiring
2Reliability
If transformer-rated meters are installed in place of self-contained meters, then safety is improved by reducing voltage and current exposure, but device complexity increases due to multiple transformer components
Solution Approach 1:
The patent combines current transformers, voltage transformers, socket adapter, and wiring into a single integrated assembly. The socket adapter merges the electrical connection functions for both power service input and meter output into one component. The transformers are positioned and connected within the same enclosure, creating a unified device that performs multiple functions (current transformation, voltage transformation, electrical connection) without requiring separate installation of each component
3Ease of operation
If self-contained meters are used, then installation simplicity is maintained, but service personnel are exposed to high voltage and current levels posing safety risks
Solution Approach 1:
The patent introduces transformers as intermediary devices between the high-voltage power service and the meter. The current transformers and voltage transformers step down the voltage and current levels, creating an intermediate voltage level that is safer for service personnel to work with. The socket adapter acts as another intermediary, providing isolated electrical connections that protect personnel from direct exposure to high voltage while still enabling meter installation and service
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables a simplified and cost-effective conversion of self-contained meter installations to transformer-rated meter installations, reducing labor and safety risks by allowing the use of existing meter enclosures and minimizing the need for extensive rewiring, while ensuring safer working conditions for service personnel.
Implementation Method 1
a current transformer subassembly including a plurality of current transformers, each current transformer being electrically connected between a meter connection of the plurality of meter connections and a phase of the multi-phase electrical service
Implementation Method 2
a voltage transformer subassembly including a plurality of voltage transformers, each voltage transformer being electrically connected between a phase of the multi-phase electrical service and an electrical connection of the plurality of electrical connections in the connector
Data Source
AI summary
An electric meter circuit assembly is disclosed which can be used as a conversion kit or in a meter installation generally. The circuit assembly includes an electric meter adapter that has a wiring harness, a meter socket adapter having a socket face adapted to receive a plug-in meter, the meter socket adapter including a plurality of meter connections exposed at the socket face; a current transformer subassembly including a plurality of current transformers, each current transformer being associated with a phase of the multi-phase electrical service, each current transformer of the plurality of current transformers being electrically connected between a meter connection of the plurality of meter connections and a phase of the multi-phase electrical service. The circuit assembly further includes a voltage transformer subassembly electrically connected between phases of the multi-phase electrical service and electrical connections in a connector adapted to be connected to the wiring harness.