AMP8 Panel Builder's Guide: Specifying Control Panel Components for Water Industry | Charter Controls
AMP8 Panel Builder's Guide: Specifying Control Panel Components for Water Industry | Charter Controls
AMP8 panel builders guide for water and wastewater remote assets
AMP8 panel builders are now being pulled into a different specification conversation. The brief is no longer only to build a reliable motor control panel, dosing skid panel or telemetry cabinet. For water and wastewater work across the 2025 to 2030 investment period, the panel has to protect an unmanned asset, preserve useful operating data, connect to a wider telemetry estate and remain maintainable when the site is wet, remote, exposed or difficult to visit.
This guide is written for UK control panel builders, systems integrators, M&E contractors and project engineers specifying panels for pumping stations, storm overflow assets, treatment works, dosing skids, boreholes, booster sets, kiosks and remote telemetry outstations. It is not a legal compliance guide and it should not be treated as a substitute for the water company specification. It is a practical component guide for the equipment that sits inside the panel.
Charter Controls supplies low voltage control and automation products for the panel building and automation industries, including motor load monitoring, drives, soft starters, smart relays, HMIs, IIoT gateways, terminal blocks, marking systems, power supplies, protection relays, thermal management and operator controls. Used together, these products help panel builders deliver remote-site panels that can detect faults earlier, show useful local diagnostics and pass selected data upstream to SCADA, telemetry or cloud systems.
Why AMP8 changes the panel specification
AMP8 is the Ofwat PR24 investment period for the regulated water sector from 2025 to 2030. The scale of investment is substantial, but the pressure behind it is operational: environmental performance, storm overflow visibility, pollution incident reduction, asset health, resilience and better data from remote sites. The engineering implication is simple: assets that used to be checked manually, or that only reported a limited run or trip state, now need more autonomous local protection and more useful remote evidence.
That matters because many water and wastewater assets do not look like a supervised factory machine. A rural pumping station, wet-well kiosk, borehole panel or small treatment outstation may run for long periods without an engineer on site. When something goes wrong, the first sign may be an alarm, an overflow event, a dead pump, a hot enclosure, a failed telemetry link or a process upset. The panel has to be designed for that reality.
The strongest specification principle is this: remote assets fail silently and expensively unless the panel is built to protect and communicate autonomously. Current-only motor protection, simple run feedback and unlabelled wiring are not enough for many AMP8-era remote sites. A better panel reports whether the motor is doing useful process work, keeps essential data locally when communications are interrupted, gives a visiting engineer a clear diagnostic view and uses wiring, cooling and protection components that make field maintenance faster.
Charter Controls is strongest at the panel and edge layer. That means motor-load monitoring, local operator interface, simple control logic, VFD control, terminal systems, marking, enclosure cooling, power supplies and telemetry gateways. It does not mean Charter Controls replaces the water company's central SCADA, historian, certified EDM instrument, cyber-security appliance or utility RTU standard where those are specified. The right position is practical and defensible: Charter Controls helps panel builders build better water and wastewater control panels at the field level.
Water and wastewater problems this panel stack helps solve
| Industry problem | Panel-level risk | Charter Controls component approach |
|---|
| Dry running, dead-heading, blocked impellers, ragging and pump wear |
A motor may still draw current even when the pump is no longer doing useful hydraulic work. Current-only protection can miss low-load faults. |
Use Unipower HPL500, HPL500MB or Unipower APM382 to monitor active power and alarm on underload, overload or changing load behaviour. |
| Variable flow demand and pump energy control |
Running a pump at fixed speed when demand changes can increase mechanical stress and energy use. |
Use Veichi AC310 or the Veichi inverter range where variable-speed pump or fan control is required. |
| Storm overflow data and EDM evidence |
Events need to be captured at source, timestamped, held locally when links fail and forwarded reliably enough for operational review. |
Use WECON ig-series HMIs for local capture and operator visibility, and WECON V-BOX H-AG for cellular telemetry, remote monitoring and edge data handling. |
| PSTN withdrawal and legacy telemetry refresh |
Existing copper-line telemetry cannot be assumed to remain available. Many small sites need a practical route to cellular or IP backhaul. |
Use WECON IIoT gateways to poll panel devices over serial or Ethernet and forward selected status, alarms and data upstream. |
| Small treatment and dosing skids |
Not every skid justifies a full PLC architecture, but it still needs local sequence control, timing, counters, interlocks and diagnostics. |
Use the GIC Genie Pro smart relay where compact local automation is the right level of control. |
| Outdoor kiosks, GRP enclosures and VFD heat load |
Heat, humidity and poor airflow shorten component life and increase nuisance faults. |
Use Linkwell LK Series filter fans where filtered ventilation is suitable, or Cooltechx enclosure air conditioning where sealed active cooling is required. |
| Wet, damp or corrosive site conditions |
Ground faults, poor labelling, corroded terminals and unclear wiring make fault-finding slower and increase maintenance risk. |
Use GIC earth leakage relays, Connectwell terminal blocks and Connectwell CLM011 laser marking to improve protection, identification and maintainability. |
Complete AMP8 component specification guide
This section follows the order a panel builder usually needs to think in: first protect the process, then control the motor, then automate the local sequence, then communicate the useful data, then make the panel buildable and maintainable. The product references below are not a complete design and they are not a compliance certificate. They are specification starting points for discussions with Charter Controls and the end client's project standard.
1. Motor load monitoring and pump protection
Pumping is the highest-value starting point because many damaging faults are process faults rather than simple motor overloads. Dry running, loss of prime, closed discharge, ragging, blocked impellers, cavitation symptoms and wear may all change the mechanical work done at the shaft before they create a clear thermal overload. A current relay can still see enough magnetising current to treat the motor as apparently healthy, especially at low mechanical load.
True power monitoring measures active power, not just line current. That matters because active power follows the useful work being transferred to the shaft more closely than apparent current does. In a centrifugal pump application, a sharp reduction in hydraulic work can appear as a clear change in kW even when amps move only slightly. For a remote site, that turns the motor into a practical process sensor without adding wet-side instrumentation, pipework penetrations or extra level devices in the wet well.
For fixed-speed pump protection, specify Unipower HPL500 where a DIN-rail motor load monitor with relay and analogue output is suitable. Where SCADA or telemetry integration by Modbus RTU is required, consider HPL500MB. For VFD-driven and asymmetric three-phase loads, specify Unipower APM382, which is positioned for true power monitoring with relay and analogue signalling. The specification discussion should include motor size, pump type, start delay, minimum-load threshold, maximum-load threshold, reset philosophy and how alarm points will be presented to the local HMI, gateway or RTU.
2. Variable frequency drives for variable-flow duty
Many water and wastewater sites need more than simple on and off control. Booster sets, borehole pumps, process blowers, sludge pumps and transfer pumps may need speed control to track demand, pressure, level or flow. A VFD can reduce mechanical shock at start and stop, give better process control and provide useful status and fault data back to the panel.
The Veichi AC310 is the higher-function vector-control option for demanding motor-control applications. It should be considered where the design calls for variable-speed control, integration with a process feedback signal and communication of selected drive status or alarms. The Veichi AC10 and wider Veichi inverter range can be considered where the duty is simpler and the specification calls for a more straightforward drive solution.
Panel builders should specify the VFD and the load monitor together rather than as separate line items. The VFD controls motor speed, but the load monitor helps answer a different question: is the motor doing useful work? For example, a drive may report run state and output frequency while an active-power monitor shows a load change that indicates dry run, blocked suction, closed valve or abnormal process behaviour. That distinction is valuable at unmanned sites where the operator cannot rely on visual inspection.
3. Soft starters where a VFD is not required
Not every pump needs speed control. Where the application is fixed-speed and the purpose is to reduce electrical and mechanical stress during start and stop, a soft starter can be the more appropriate component. It reduces the shock associated with direct-on-line starting and can help avoid the mechanical stress that repeated hard starts place on pumps, couplings, pipework and valves.
Charter Controls supplies SafeSav soft starters for applications where controlled start and stop are required without specifying a full VFD. The specifying question is not whether a soft starter is better than a VFD in general. The question is whether the asset needs variable speed. If the answer is no, the soft starter can provide a simpler fixed-speed motor-starting architecture, while a Unipower load monitor can still provide underload and overload detection.
4. Smart relays and local automation
Remote water sites often contain small but important control tasks that do not justify a full PLC package. Examples include duty and standby pump alternation, timed flushing, simple level-based sequences, fan control, alarm fan-out, permissive logic, local inhibit conditions and simple maintenance counters. These tasks need reliable local logic, but they also need to stay understandable for the engineer who opens the panel in a kiosk at 2am.
The GIC Genie Pro smart relay is the Charter Controls answer for this level of local automation. In Charter Controls copy it should be described as a smart relay. Use it where the application is more than a set of timers and relays, but still below the complexity of a full PLC architecture. Specify I/O count, expansion requirements, analogue input needs, communication module requirements and whether local logging or serial communication is the priority.
For remote assets, the practical value is autonomy. If the link to SCADA drops, the local sequence still runs. If a pump fails, the smart relay can handle a duty-change sequence or raise a local alarm. If the enclosure temperature rises, it can trigger ventilation or a panel alarm. Keep the programming clear, keep the HMI text plain and document the logic in the panel file.
5. PLCs and HMIs for larger or more visible local control
Where the application needs more I/O, more control logic, a richer operator interface or closer SCADA integration, a PLC and HMI architecture may be more appropriate than a smart relay alone. Water-sector examples include storm overflow panels, treatment process skids, multi-pump booster panels, screen panels and site kiosks that require a local mimic, alarm screen, maintenance page or commissioning menu.
Charter Controls supplies WECON PLCs and WECON ig-series HMIs. The WECON ig-series HMI can provide a local operator view for pump states, valve positions, wet-well level, alarm history, drive speed, load-monitor status and maintenance prompts. On relevant models, Ethernet and serial connectivity, remote monitoring and MQTT or cloud features may support the wider telemetry architecture, but model-specific protocol support should always be checked before quotation.
For a storm overflow panel, the HMI is not just a nice-to-have display. It can become the local point where event state, timestamps, alarms and maintenance actions are visible at the panel. That helps the engineer see what happened before a remote link failed or before a call-out was raised.
6. IIoT, telemetry and remote I/O
Remote sites need a route from panel data to the people and systems that act on it. In the past, many remote assets depended on copper-line telemetry, radio or low-bandwidth legacy systems. AMP8 work, near-real-time storm overflow reporting and PSTN withdrawal all push the panel builder to consider how the site will communicate before the cabinet is built.
The WECON V-BOX H-AG is a practical edge gateway for small stations, kiosks and packaged panels. It can sit inside the cabinet, poll selected devices over serial or Ethernet and carry data over 4G where the site does not have a wired communications path. For IIoT-category browsing, use the WECON IIoT category. Where the operator interface itself has to withstand harsh local conditions, link to WECON PI3070IG whose front panel is IP65 protected.
The correct specification question is not simply whether a gateway can connect to the cloud. It is whether the chosen gateway can read the required local devices, retain useful information when the link drops, apply the required user and remote-access controls, and fit within the end client's OT security rules. Where the water company requires WITS-DNP3, DNP3, IEC 60870-5-104, a managed RTU, a firewall or a specific telemetry standard, those requirements must be checked separately. The V-BOX is best positioned as a panel and edge telemetry component, not as a replacement for every utility RTU standard.
7. PID controllers and process control
Not every process-control loop needs to sit in a large automation platform. Small treatment works and dosing systems may need local temperature, pressure, level or flow control in a compact panel footprint. Where the requirement is a dedicated control loop with a clear setpoint, alarm output and local adjustment, a PID controller can be the right level of equipment.
Charter Controls supplies GIC and associated temperature and PID controller products for applications such as process heating, treatment skid temperature control, small dosing control and local panel temperature functions. Specify the input type, output type, supply voltage, display requirement, alarm requirement and whether the signal needs to be repeated to an HMI or telemetry gateway.
8. Phase failure and voltage monitoring relays
Remote motor panels should not rely on the operator noticing poor supply conditions after the damage is done. Phase loss, incorrect phase sequence, undervoltage, overvoltage and imbalance can damage motors, create nuisance trips or leave a pump unavailable when the station needs it. At an unmanned site, supply-condition monitoring is basic engineering discipline.
Use GIC monitoring relays to add phase and voltage protection where the motor starter, soft starter or drive does not already provide the full protection philosophy required by the specification. For water-sector panels, agree whether the relay should trip locally, report alarm-only status, latch until reset, or feed a telemetry alarm. That reset philosophy matters because remote reset may be inappropriate for some faults without on-site inspection.
9. Earth leakage relays
Wet and wastewater-adjacent environments increase the importance of earth leakage protection and fault visibility. Pumps, cable runs, junction boxes, field instruments and damp enclosures can all contribute to insulation degradation and leakage. A panel that can detect and report earth leakage conditions helps maintenance teams act earlier and work more safely.
Specify GIC earth leakage relays with the appropriate core balance current transformer arrangement and trip or alarm philosophy. In many installations, the detailed protection scheme will be defined by the electrical designer and site standard. Charter Controls can supply the relay components, while the panel builder confirms settings, discrimination and coordination against the project design.
10. Automatic transfer switches
Some remote sites need backup power or generator changeover. If a station loses mains power, the consequence may be more than a local inconvenience. It can mean a pump cannot run, telemetry goes offline, a wet well rises or a process stops. Automatic transfer switching must therefore be considered where the asset has a standby power requirement.
Charter Controls supplies automatic transfer switch products including Radin ATS options. Specify source arrangement, current rating, control voltage, generator interface, manual bypass needs, local indication and how source status will be reported to the panel HMI or telemetry device. As with all power-resilience equipment, the generator and electrical-design requirements should be confirmed by the project engineer.
11. 24 V DC power supplies and control circuit power
Remote telemetry, HMIs, smart relays, gateways, sensors and relays often depend on stable 24 V DC control power. A weak or poorly protected control supply can turn a good panel into an unreliable asset. The power supply must be sized for steady load, inrush, environmental temperature, expansion capacity and how alarms behave when the control supply itself fails.
Use the Charter Controls power supply and distribution range, including Pairui and GIC options where suitable, to support panel control circuits, telemetry gateways, HMIs and auxiliary loads. Specify load current, headroom, redundancy requirement, alarm contact requirement, DIN-rail space, enclosure temperature and whether downstream fused distribution is needed.
12. Terminal blocks, wiring and permanent marking
Panel build quality matters more at remote sites because fault-finding time is expensive and conditions are rarely ideal. A panel engineer may be working in poor weather, in a kiosk, beside a wet well or under time pressure. Terminal identification, wire numbering, segregation and accurate panel documentation all affect how quickly the asset can be restored.
Charter Controls supplies Connectwell terminal blocks and associated wiring accessories. For water-sector repeat builds, standardising terminal families across multiple panels can reduce drawing variation, simplify spares and make site maintenance more familiar for field engineers.
The Connectwell CLM011 LightEtch laser marking system is not a live SCADA component. Its value sits in manufacture and maintainability. Laser-etched markers improve terminal and component identification without relying on ink or ribbon-based marking. On remote water panels, where legible identification can shorten fault-finding, the marking system is a practical part of the specification, not an afterthought.
13. Enclosure filter fans
Outdoor kiosks and panel enclosures can become heat traps, especially when VFDs, power supplies and gateways are installed in small spaces. Heat shortens electronics life and increases nuisance faults. A thermal calculation should be carried out for the enclosure, considering internal heat load, ambient conditions, dust, humidity, solar gain, enclosure material and ventilation path.
Where the site environment allows filtered ventilation, specify Linkwell LK Series filter fans and matching exhaust components. For remote assets, consider maintainability: filter access, replacement interval, enclosure pressure path, ingress risk and whether a failed fan should report an alarm to the HMI or telemetry system.
14. Enclosure air conditioning
Filter fans are not always suitable. Where the enclosure must remain sealed, the ambient temperature is high, the dust or humidity risk is unacceptable, or the internal heat load is too large for ventilation alone, active enclosure cooling should be considered. This is common where drives are installed in compact panels or where the cabinet is exposed to solar gain.
Charter Controls supplies Cooltechx enclosure air conditioning through the thermal management range. Specify cooling capacity, enclosure size, ambient temperature, supply voltage, condensation management, filter maintenance, alarm output and environmental sealing. Do not treat cooling as a late addition. Panel layout, cable routing and door space need to allow for it from the design stage.
15. Panel operator controls
Even highly connected remote assets still need safe, clear local operation. Engineers need selector switches, pushbuttons, indicators, emergency functions where specified, lamp tests, local reset where appropriate and visible status. Operator controls are not cosmetic. They define how the field engineer interacts with the asset during commissioning, maintenance and fault recovery.
Use Esbee Metal Series switches, pushbuttons and indicators where robust local panel operation is required. Specify actuator type, contact arrangement, illumination, legend, ingress protection, panel cut-out, colour convention and whether the control function should be local-only, remote-capable or interlocked. For remote reset and alarm acknowledgement, agree rules with the end client. Some faults should not be reset remotely without physical inspection.
Recommended starting configurations
The following configurations are not schematics. They are starting points for BOM discussions. The final design should always follow the water company specification, electrical design, risk assessment and site survey.
| Panel type |
Core components to consider |
Purpose |
| Basic rural pump station panel |
Unipower HPL500 or HPL500MB, SafeSav soft starter or Veichi inverter, GIC phase and voltage monitoring, GIC earth leakage relay, 24 V DC power supply, Connectwell terminals, Linkwell filter fan, Esbee operator controls. |
Protect the pump, control the motor, give clear local operation and improve maintainability for an unmanned fixed-speed or variable-speed station. |
| Remote pump station with telemetry |
Unipower HPL500MB or APM382, Veichi AC310 where speed control is required, WECON ig HMI, WECON V-BOX H-AG, GIC Genie Pro smart relay where simple local logic is sufficient, 24 V DC power supply, Connectwell terminals and CLM011-marked identifiers, enclosure thermal management. |
Combine local protection and operator visibility with selected upstream data and alarm forwarding over cellular or site network. |
| Small treatment or dosing skid panel |
GIC Genie Pro smart relay, GIC PID controller, WECON HMI where local display is required, WECON V-BOX H-AG where remote visibility is required, Pairui or GIC power supply, Connectwell terminals, Linkwell ventilation or Cooltechx air conditioning, Esbee operator controls. |
Provide compact local control, visible diagnostics and remote status for dosing, UV, sludge, booster or auxiliary treatment assets. |
How Charter Controls supplies the panel stack
For AMP8 water and wastewater work, panel builders benefit from keeping the component conversation joined up. A pump station panel may need a load monitor, drive or soft starter, smart relay, HMI, gateway, power supply, terminal system, thermal management and operator controls. Sourcing these as disconnected line items increases the risk of specification gaps, wiring rework, unclear communications requirements and fragmented technical support.
Charter Controls works as a UK manufacturers agent and supplier for low voltage control and automation products used by control panel builders and automation companies. The commercial value is practical: one account for a wide range of panel components, direct manufacturer relationships, UK-based technical support and product knowledge across the brands named on this page.
For repeat panel builds, Charter Controls can also support BOM standardisation, terminal marking through the Connectwell CLM011 service, technical product selection and discussions around call-off or bonded stock arrangements where commercially agreed. Do not treat this page as a live availability promise. Confirm stock position, delivery timing and project support requirements with the sales team at quotation stage.
Specification limits to check before ordering
A good hub page should be clear about fit as well as capability. Charter Controls is well placed where the requirement is panel-level equipment and edge telemetry for local assets. It is not claiming to supply every part of a regulated water telemetry architecture.
- Certified storm overflow instrumentation, MCERTS flow monitoring, water-quality sondes and wet-well hazardous-area sensor packages must be specified separately where the project requires them.
- Where the water company requires WITS-DNP3, DNP3, IEC 60870-5-104, managed RTU hardware, OT firewalls, radio infrastructure or central SCADA software, confirm those items before assuming an IIoT gateway is sufficient.
- Many automation devices are DIN-rail panel components and must be installed in a correctly rated enclosure for wet, outdoor or corrosive environments.
- Remote access and remote reset rules must be agreed with the end client. Not every trip or alarm should be reset remotely.
- All product model numbers, communications options, IP ratings, supply voltages and accessories should be checked against current Charter Controls product pages before the final BOM is issued.
FAQ: AMP8 panel components for water and wastewater sites
What is AMP8 and how does it affect control panel builders?
AMP8 is the 2025 to 2030 investment period for the regulated water sector under Ofwat's PR24 framework. For panel builders, the practical impact is that water and wastewater assets increasingly need better remote visibility, autonomous fault detection, local event capture and maintainable panel builds. The panel is no longer only a motor starter or control cabinet. On many remote sites it becomes the first point where pump condition, alarm status, event timing and communications health can be captured before data is forwarded to SCADA or telemetry systems.
What components should I specify for an AMP8 remote pump station panel?
A typical remote pump station panel should start with motor protection and process visibility. Consider a Unipower HPL500, HPL500MB or APM382 for active-power load monitoring, a Veichi VFD or SafeSav soft starter for motor control, GIC protection relays for supply and leakage monitoring, a WECON HMI for local diagnostics, a WECON V-BOX H-AG for telemetry where suitable, a stable 24 V DC power supply, Connectwell terminal blocks, permanent terminal marking, enclosure thermal management and robust operator controls.
How does power monitoring improve pump protection compared with current monitoring alone?
Current includes a reactive magnetising component that can remain substantial at low mechanical load. That means a dry-running or lightly loaded centrifugal pump may still draw enough current to look normal to a current-only device. Active power is closer to the useful work being transferred to the shaft, so it can reveal underload, dry run, closed valve or load-change behaviour that current may not show clearly. Thresholds must still be set for the actual pump, motor and duty point.
What is the difference between a VFD and a soft starter for a pump application?
A soft starter controls the starting and stopping profile of a fixed-speed motor. It is useful where the pump does not need variable speed but the panel should reduce electrical and mechanical shock. A VFD controls motor speed during operation as well as start and stop, so it is suitable where flow, pressure or level demand changes. For many pump stations, the decision is based on whether the process needs variable-speed control. Either option can be paired with active-power load monitoring.
What remote I/O and telemetry components are suitable for unmanned water industry sites?
For small stations, kiosks and packaged panels, a WECON V-BOX H-AG can provide panel-level telemetry and remote monitoring by polling selected devices and sending data over 4G or IP where the site architecture allows it. WECON ig-series HMIs can provide local operator visibility and, on suitable models, data handling and remote functions. Utility telemetry standards vary, so always confirm whether the end client requires a specific RTU, WITS-DNP3, DNP3, IEC 60870-5-104 or cyber-security architecture.
What enclosure thermal management is needed for outdoor AMP8 panels?
Outdoor and kiosk-mounted water panels should be thermally assessed before build. VFDs, power supplies, gateways and densely packed components all add heat. Where the environment allows filtered ventilation, Linkwell LK Series filter fans and exhaust components may be appropriate. Where the enclosure must stay sealed or the heat load is higher, Cooltechx enclosure air conditioning should be considered. The specification should cover ambient temperature, solar gain, ingress protection, internal heat load, maintenance access and alarm reporting.
What protection relays are needed in a water industry control panel?
The final protection scheme is defined by the electrical designer and the client specification, but common panel-level considerations include phase loss, phase sequence, overvoltage, undervoltage, phase imbalance, earth leakage, motor underload and motor overload. GIC monitoring relays and earth leakage relays can support the supply and leakage parts of the scheme. Unipower motor load monitors support active-power-based pump protection. Relay outputs should be coordinated with the starter, drive, HMI, gateway and any upstream telemetry system.
Where can I source AMP8 panel components in the UK?
Charter Controls supplies a broad range of low voltage control and automation products for UK panel builders, including Unipower motor load monitors, Veichi drives, SafeSav soft starters, WECON HMIs and IIoT gateways, GIC smart relays and monitoring relays, Connectwell terminal blocks and marking systems, Linkwell thermal management products, Cooltechx air conditioning and Esbee operator controls. Send the project BOM, site brief or panel outline to Charter Controls so the team can help match component choices to the application.
What is the GIC Genie Pro and how is it used in pump station automation?
In Charter Controls copy, the GIC Genie Pro should be described as a smart relay. It is suited to compact local automation tasks where simple relays and timers are not enough, but a full PLC architecture may be more than the application needs. In a pump station panel it can be used for local sequencing, duty and standby logic, interlocks, timers, counters and alarm handling. Specify I/O, expansion, communication and logging requirements carefully, especially where telemetry and local data retention are both required.
Specify your water and wastewater panel with Charter Controls
Send your pump station, storm overflow, treatment skid, dosing panel or telemetry cabinet brief to Charter Controls. We can help you build a practical component set across motor load monitoring, drives, soft starters, local automation, HMI, IIoT gateway, power supplies, protection relays, terminal blocks, marking, thermal management and operator controls.
Email your project brief to Charter Controls
Call Charter Controls on 01424 850660