Protection and Control Panels

Control Engineering designs and manufactures bespoke protection and control panels for electricity distribution, transmission, generation and grid connection projects.
Our panels provide the equipment and interfaces required to protect, control, monitor and indicate the condition of transformers, switchgear and other electrical infrastructure.

Protection and Control Panel Types

Our capabilities include:

HV and LV transformer protection panels
Transformer differential and backup protection panels
Circuit-breaker protection and control panels
Feeder protection panels
Incomer and bus-section panels
Busbar protection panels
Intertrip and interlocking panels
Control, indication and monitoring panels
Protection relay and equipment racks
Standalone relay and control assemblies
Replacement and retrofit panels

Panels can be manufactured from customer-approved drawings or designed by CEL around the project specification, protection philosophy and equipment requirements.

Equipment Integration

We can incorporate customer-specified equipment from leading manufacturers, including:

Protection relays
Trip and auxiliary relays
Intertrip communications equipment
Disturbance and fault recorders
Meters and measurement devices
Test blocks and test sockets
Control and selector switches
Indication and alarm equipment
MCBs, fuses and isolation devices
RTU and SCADA interfaces
Communications equipment
Terminals and cable interface equipment

Equipment is arranged to provide clear access for operation, testing, maintenance and future replacement.

Designed Around the Protection Scheme

Each panel is developed around the electrical system and agreed project requirements.

Design considerations can include:

Protection philosophy and relay functions
CT and VT circuits
Trip and close circuits
Circuit-breaker control and indication
Intertripping and interlocking
AC and DC auxiliary supplies
Alarm and event signals
RTU and SCADA interfaces
Communications requirements
Test and isolation facilities
Cable entry and terminal arrangements
Panel dimensions and available space
Customer and network operator standards

Where design is included, our engineering team can prepare general arrangement drawings, electrical schematics, wiring diagrams, terminal schedules and equipment schedules for customer approval.

Manufacture and Testing

Panels are manufactured by our experienced workshop team against the approved drawings, specifications and equipment schedules.

Completed panels are inspected and tested before delivery. Depending on the agreed scope, testing can include:

Visual and mechanical inspection
Wiring and continuity checks
Point-to-point checks
Functional testing
Control and indication checks
Alarm and interface checks
Customer factory acceptance testing
Protection relay testing where specified

Any protection settings, relay programming or specialist testing requirements will be included only where agreed within the project scope.

Replacement and Retrofit Panels

We can manufacture replacement panels and assemblies for existing substations and electrical installations.

This may include:

Replacement protection and control panels
Replacement panel fronts
Relay upgrade and replacement assemblies
New mounting plates and internal equipment
Additional control or indication equipment
Interfaces between new and existing systems
Panels designed to fit an existing footprint

Existing drawings, photographs, equipment schedules and site dimensions can be reviewed to establish the requirements. A site survey can also be discussed where the available information is limited.