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SCADA & Secondary Automation
6 Series · 16 Models
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SCADA & Secondary Automation Overview
Substation SCADA and secondary automation equipment for MV/LV distribution systems — protection IEDs, DC auxiliary panels, SCADA stations, RTUs, communication managers, MIMIC panels and multifunction meters. IEC 61850 / IEC 60870-5-104.
Available Series
Protection IED Series
Multifunction protection IEDs for MV feeders, incomers and bus-ties with overcurrent, differential, voltage and frequency protection, RS485 and Ethernet communication.
DC Panel Series
DC auxiliary panels with battery charger and battery bank for protection tripping, motor operation and relay power supply, in 24–100 Ah ratings.
Protection & Control Series
Arc flash protection, automatic bus transfer (BZT), LV intelligent release and motor protection relays for switchgear groups, dual-incomer substations, ACBs and MCC feeders.
SCADA & Monitoring Series
SCADA monitoring stations, remote terminal units, local HMI touchscreens, GPS/BeiDou time synchronization and MIMIC panels for station control-room monitoring and dispatch.
Communication Series
Communication managers for protocol conversion and industrial managed Ethernet switches for ring-network communication in substations.
Metering Series
Multifunction energy meters for feeder and incomer metering, and 0.2S class revenue meters for billing boundaries.
Related Engineering Calculators
Free sizing and pricing tools for this product category.
Application Scenarios
Substation Turnkey Projects
Complete protection, DC power and SCADA layer for MV/LV substations.
Data Centers
Protection IEDs, DC panels and SCADA for fault-tolerant power distribution.
Industrial Plants & Oilfield
Motor protection, arc flash protection and prepaid metering for process and oilfield power systems.
Hospitals & Public Facilities
Medical IT isolation systems plus protection, metering and SCADA for critical facilities.
Technical Advantages
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FAQ - SCADA & Secondary Automation
What is secondary automation in a substation?
Which protocol should I choose?
Do you supply the SCADA engineering?
What is the minimum order quantity (MOQ) for SCADA & Secondary Automation?
What is the delivery time for SCADA & Secondary Automation?
Which standards and certifications do your SCADA & Secondary Automation comply with?
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Need help?
All specifications and dimensions can be customized upon request
Protection Relay (IED) vs RTU vs SCADA Station: How to Choose
| Protection Relay (IED) | RTU | SCADA Station | |
|---|---|---|---|
| Function | Protects the feeder or transformer and trips the breaker | Collects signals and passes them to the control centre | Supervises, archives, alarms and controls the substation |
| Protocols | IEC 61850, with IEC 60870-5-104 gateway options | IEC 60870-5-104 and Modbus to the dispatch centre | IEC 61850 and IEC 60870-5-104 across the station |
| Mounting | Panel mounted in the switchgear compartment | DIN rail or panel in the control cabinet | Server and workstations in the control room |
| Redundancy | Single device, with a backup scheme where required | Dual communication paths to the centre | Redundant servers and networks |
| Integration | Feeds the station bus with protection data | Bridges legacy devices onto one protocol | Pulls every device into one model and one HMI |
| Cost | Lowest per point protected | Middle | Highest, including engineering and commissioning |
| Typical application | Feeder, transformer and motor protection | Telecontrol of small and remote sites | Substation turnkey projects and dispatch centres |
Where QDTB® SCADA & Secondary Automation Are Specified
Secondary automation is specified as a layer rather than a box: protection IEDs at the switchgear, RTUs where a remote site has to be telemetered, DC auxiliary panels that keep the protection alive when AC fails, and a SCADA station where the operator actually sits. Each device has a different job, and the substation only works when the layer is designed as a whole.
Substation turnkey projects specify IEC 61850 inside the station and IEC 60870-5-104 to the dispatch centre, because the utility's control system and the station bus rarely speak the same language. Communication managers and time synchronisation are what make the two ends agree.
Data centres, hospitals and industrial plants use the same equipment for their own medium-voltage rooms. Protection, metering and a MIMIC panel are needed there even though there is no utility dispatch centre to report to.
The scope covers protection IEDs, DC panels, SCADA stations, RTUs, communication managers, MIMIC panels and multifunction meters. Units are engineered to IEC 60255-151 and IEC 60870-5-104, with IEC 61850 where the station is specified that way.
Frequently Asked Questions
What is secondary automation in a substation?
Secondary automation covers the protection, control, metering and communication layer — protection IEDs, DC panels, SCADA stations, communication managers and meters — that keeps a primary (switchgear/transformer) system safe and remotely operable.
Which protocol should I choose?
Modbus RTU/TCP for simple sites, IEC 60870-5-104 for dispatch telecontrol, and IEC 61850 (GOOSE/SV) for modern interoperable substations.
Do you supply the SCADA engineering?
SCADA station pricing includes basic configuration; detailed engineering and installation are quoted separately per project.
What is the minimum order quantity (MOQ) for SCADA & Secondary Automation?
One unit for standard products. Custom-designed equipment is quoted on specifications — send your parameters or drawings and our sales team will confirm the MOQ for your configuration.
What is the delivery time for SCADA & Secondary Automation?
Standard units are delivered in 30-45 days. Custom or large-capacity units follow a project-specific schedule confirmed at quotation. Rush orders can be accommodated for urgent projects.
Which standards and certifications do your SCADA & Secondary Automation comply with?
They are designed and tested to IEC 60255-151; IEC 61850 (optional), IEC 60870-5-104, DL/T 5044. All QDTB® equipment is ISO 9001 certified and CE marked, and the company operates ISO 9001, ISO 14001 and ISO 45001 management systems.