Demand Response Controller
ZDR-20-r1k
€4,345ex VAT
1000 A per phase flexible Rogowski coils
Demand response site system
https://episensor.com/system-builder/examples/demand-response-site
A distribution centre with a 1,000 A incomer wants to shed a non-critical load when grid frequency falls, for a static frequency response programme.
€5,244 hardware, before tax and delivery
The Demand Response Controller is confirmed with our engineers before it ships.
System diagram
- Zigbee
- Wired
- Edge
- Platforms
Parts list
Field devices
To be confirmed with engineering
Configure Demand Response Controller
Datasheet: Demand Response Controller (PDF, opens in a new tab)
Why this
For 1 controlled load: Loads for demand response
Shed a load on grid frequency
Sheds a non-critical load through its own 4 A relay when frequency falls, and meters the incomer on 1,000 A flexible Rogowski coils.
Static frequency response through the controller’s own relay, rated 4 A at 250 V AC: shed a non-critical load, or start a standby generator. No high-resolution recording.
The flexible Rogowski coils wrap a conductor of any size, a busbar, or several cables in one phase, and connect directly with no separate integrator.
The current transformers arrive fitted and calibrated against that controller, so its Class 0.5S metering covers the whole measurement.
Up to 30 data feeds, streamed every second, and an optional RS-485 Modbus master for up to four devices.
Ordering needs approved control authority, interlocks, fail-safe behaviour, manual override and a qualified electrical installation.
Gateway and software
Gateway
ZGW-20
€899ex VAT
Commercial, standard compute, Zigbee, Ethernet, EU power supply
Configure Gateway
Datasheet: Gateway (PDF, opens in a new tab)
Why this
One Gateway at each site
Every EpiSensor device reports over the Zigbee mesh to a Gateway, which runs Edge on site. One Gateway carries up to 250 devices.
Edge comes pre-installed and licensed for unlimited EpiSensor devices.
Optional
Support
Subscription
€16 / monthbilled annually, €192 ex VAT
Engineering support for each Gateway, billed annually.
Why this
Optional engineering support
Direct access to EpiSensor engineers for commissioning questions, faults and firmware, for each Gateway.
Core
Subscription
€30 / monthbilled annually, €360 ex VAT
Remote fleet management for each Gateway, billed annually.
Why this
Optional remote management
Core manages every Gateway from one place: health, updates, backups and remote access.
- Hardware
- €5,244once, before tax and delivery
- Optional support and Core
- €552a year, if you add them
How the plan was chosen
The programme needs static frequency response: the controller drops a non-critical load through its own 4 A relay when frequency falls, and restores it afterwards. That is the ZDR-20. A programme that asks for event evidence needs the ZDR-21, and a battery or UPS that follows frequency needs the ZDR-22.
The incomer carries up to 1,000 A per phase on conductors too large for a split-core CT, so the controller comes with 1,000 A flexible Rogowski coils, fitted and calibrated to it.
The controller reports to a ZGW-20 Gateway running Edge, which records each event and passes the data to the programme's platform.
Control of a live load is always confirmed with our engineers before ordering: the control authority, interlocks, fail-safe behaviour and manual override have to be agreed for the site.
Read more
Application guides
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Demand response: static frequency response
Equipment, connections and selection notes for your proposed system.
Open and edit this plan · episensor.com
System diagram
- Zigbee
- Wired
- Edge
- Platforms
Parts list
Budget planning only. Prices exclude VAT, delivery and installation. Confirm availability and final pricing before ordering.
Field devices
| Equipment / ordering code | Qty | Unit price | Line total |
|---|---|---|---|
| Demand Response ControllerZDR-20-r1k1000 A per phase flexible Rogowski coilsDatasheet | 1 | €4,345.00 | €4,345.00 |
Gateway and software
| Equipment / ordering code | Qty | Unit price | Line total |
|---|---|---|---|
| GatewayZGW-20-UZ-NC-NW-EU-DT-C4-NS-NP-NIO-NR-W1-NSIMCommercial, standard compute, Zigbee, Ethernet, EU power supplyDatasheet | 1 | €899.00 | €899.00 |
Optional · excluded from required totals
| Equipment / ordering code | Qty | Unit price | Line total |
|---|---|---|---|
| SupportSUP-GW-YEngineering support for each Gateway, billed annually. | 1 | €192.00per year | €192.00per year |
| CoreCORE-GW-SUB-YRemote fleet management for each Gateway, billed annually. | 1 | €360.00per year | €360.00per year |
- Hardware
- €5,244
- Optional annual services
- €552 per year
Selection notes and confirmations
ZDR-20-r1k · Demand Response Controller
For 1 controlled load: Loads for demand response
Sheds a non-critical load through its own 4 A relay when frequency falls, and meters the incomer on 1,000 A flexible Rogowski coils.
- Static frequency response through the controller’s own relay, rated 4 A at 250 V AC: shed a non-critical load, or start a standby generator. No high-resolution recording.
- The flexible Rogowski coils wrap a conductor of any size, a busbar, or several cables in one phase, and connect directly with no separate integrator.
- The current transformers arrive fitted and calibrated against that controller, so its Class 0.5S metering covers the whole measurement.
- Up to 30 data feeds, streamed every second, and an optional RS-485 Modbus master for up to four devices.
- Ordering needs approved control authority, interlocks, fail-safe behaviour, manual override and a qualified electrical installation.
ZGW-20-UZ-NC-NW-EU-DT-C4-NS-NP-NIO-NR-W1-NSIM · Gateway
Every EpiSensor device reports over the Zigbee mesh to a Gateway, which runs Edge on site. One Gateway carries up to 250 devices.
- Edge comes pre-installed and licensed for unlimited EpiSensor devices.
SUP-GW-Y · Support (optional)
Direct access to EpiSensor engineers for commissioning questions, faults and firmware, for each Gateway.
CORE-GW-SUB-Y · Core (optional)
Core manages every Gateway from one place: health, updates, backups and remote access.
Your answers
- Loads for demand response
- 1 controlled load at a large site, for static frequency response, metered with its own coils up to 1,000 A per phase