INDUSTRY & GRID / SUBSTATION AUTOMATION
Substation Monitoring & IEC 61850 Gateways
Keep the substation talking, timed and trusted
The short answer
How do you connect IEC 61850 IEDs to a DNP3 or IEC 60870-5-104 SCADA master?
You bridge them with a substation-rated protocol gateway. An IEC 61850 gateway terminates MMS and GOOSE on the station bus, then maps each point to DNP3 or IEC 60870-5-101/104 for the SCADA master. Pair it with an IEEE 1588v2 grandmaster clock so sequence-of-events records across relays share one sub-microsecond reference.
Modern substations run a Babel of protocols. New IEDs speak IEC 61850 MMS and GOOSE, legacy relays still talk DNP3 or IEC 60870-5-101 over serial, and the SCADA master wants 104. Bridging them with office-grade kit fails fast: switches that cannot survive the electromagnetic environment, no microsecond time sync for sequence-of-events and protection schemes, and a control LAN exposed to the corporate network in breach of NIS and the NCSC CAF. The result is dropped GOOSE messages, unusable disturbance records, and audit findings you cannot close.
Talk through your site ● Answered within one working day
The difference
IEC 61850 gateway: what changes the day it goes live
Modern substations run a Babel of protocols. New IEDs speak IEC 61850 MMS and GOOSE, legacy relays still talk DNP3 or IEC 60870-5-101 over serial, and the SCADA master wants 104. Bridging them with office-grade kit fails fast: switches that cannot survive the electromagnetic environment, no microsecond time sync for sequence-of-events and protection schemes, and a control LAN exposed to the corporate network in breach of NIS and the NCSC CAF. The result is dropped GOOSE messages, unusable disturbance records, and audit findings you cannot close.
- Every relay, IED and meter speaks to SCADA, with IEC 61850 MMS/GOOSE, DNP3 and IEC 60870-5-101/104 translated by one substation-rated gateway
- Sub-microsecond time across the bus via IEEE 1588v2 PTP, GPS-disciplined with IRIG-B fallback, so sequence-of-events and protection records line up
- Hardware that survives the substation, switches and gateways type-tested to IEC 61850-3 and IEEE 1613, wide-temperature, surge and EMI rated
- A defensible IT/OT boundary that satisfies the NIS Regulations and the NCSC CAF without crippling engineering access
What you get
- 01
Every relay, IED and meter speaks to SCADA, with IEC 61850 MMS/GOOSE, DNP3 and IEC 60870-5-101/104 translated by one substation-rated gateway
- 02
Sub-microsecond time across the bus via IEEE 1588v2 PTP, GPS-disciplined with IRIG-B fallback, so sequence-of-events and protection records line up
- 03
Hardware that survives the substation, switches and gateways type-tested to IEC 61850-3 and IEEE 1613, wide-temperature, surge and EMI rated
- 04
A defensible IT/OT boundary that satisfies the NIS Regulations and the NCSC CAF without crippling engineering access
The full stack, applied here
One protection trip, timed and trusted across the bus
Every Indiott build runs all five layers as one accountable system. Follow a single goose trip from the sensor that catches it to the report that proves it.
The stack already senses the substation: LoRaWAN units read transformer temperature, partial-discharge proxies and cabinet environment alongside the IEDs.
Hands condition data to CONNECT ↓
Protocol gateways translate IEC 61850 MMS/GOOSE to DNP3 and IEC 60870-5-104, redundant-ring managed switches carry the station bus, serial gateways lift legacy relays on.
Hands a timed message to SECURE ↓
The core: the station bus is segmented from corporate IT to IEC 62443 zones and conduits with least-privilege access, the IT/OT boundary NIS and the NCSC CAF demand.
Hands a trusted trip to CONTROL ↓
A GPS-disciplined IEEE 1588v2 PTP grandmaster gives sub-microsecond time with IRIG-B fallback, so protection schemes and sequence-of-events records line up every bay.
Hands a synced action to MANAGE ↓
Dashboards surface GOOSE traffic, gateway, switch and clock health and time-sync to SCADA, so degraded sync or a failing link shows before it costs a disturbance record.
The loop is closed ✓
How teams start
From a single pilot to the whole portfolio
You do not boil the ocean. Nearly every rollout runs the same four moves, and you own a working, evidenced result at the end of the first one.
Scope & risk map
We walk the sites, list the assets and pin the one constraint that matters, then agree what a good result looks like before a single sensor is bought.
Pilot on one site
A focused set of sensors goes onto one site or asset group, live on our telemetry and dashboards, wired to the people who need the alert.
Validate & standardise
We tune thresholds, kill false positives, confirm the integration into your SCADA, BMS or CAFM, and write the standard design down so it repeats.
Scale the portfolio
The proven design rolls out across the estate, reusing the same hardware standards and data models so every site reads the same way.
The IEC 61850 gateway kit we deploy
Full catalogue
ATOP PG5900A Smart Grid Protocol Gateway (IEC 61850)
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ATOP PG5904D Smart Grid Protocol Gateway (IEC 61850)
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ATOP PG5908 Smart Grid Protocol Gateway (IEC 61850)
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ATOP PG5916 Smart Grid Protocol Gateway (IEC 61850)
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ATOP EHG7307 Industrial Managed Ethernet Switch
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ATOP EHG7604 Industrial Managed Ethernet Switch
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ATOP NTS8600 PTP Grandmaster Clock (IEEE 1588)
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ATOP NTS8610 PTP Grandmaster Clock (IEEE 1588)
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| Model | Key specification | Price ex VAT | Availability |
|---|---|---|---|
| ATOP PG5900A Smart Grid Protocol Gateway (IEC 61850) PG5900A | Protocol Conversion: Ethernet to Ethernet only: Modbus TCP, DNP3 TCP/IP, IEC 60870-5-104, IEC 61850 | Price on request | Quote only |
| ATOP PG5904D Smart Grid Protocol Gateway (IEC 61850) PG5904D | Serial Ports: 4 × RS-232/422/485, optional 3 kV isolation | Price on request | Quote only |
| ATOP PG5908 Smart Grid Protocol Gateway (IEC 61850) PG5908 | Serial Ports: 8 × RS-232/422/485 on RJ45, optional 2.5 kV isolation | Price on request | Quote only |
| ATOP PG5916 Smart Grid Protocol Gateway (IEC 61850) PG5916 | Serial Ports: 16 × RS-232/422/485 on RJ45, optional 2.5 kV isolation | Price on request | Quote only |
| ATOP EHG7307 Industrial Managed Ethernet Switch EHG7307 | SFP fibre uplink ports: 2 x SFP (SFP1: 1000 Mbps / SFP2: 100/1000 Mbps), alongside 5 x 10/100/1000 RJ45 | Price on request | Quote only |
| ATOP EHG7604 Industrial Managed Ethernet Switch EHG7604 | Layer 3 Routing: IPv4 static, RIP v1/v2 and OSPFv2 routing in a 4-port DIN-rail switch | Price on request | Quote only |
| ATOP NTS8600 PTP Grandmaster Clock (IEEE 1588) NTS8600 | PTP Profiles and Certification: 7 PTP profiles incl. IEC 61850-9-3, IEEE C37.238 and ITU-T G.8275.1; IEC 61850-3 HV and IEEE 1613 certified | Price on request | Quote only |
| ATOP NTS8610 PTP Grandmaster Clock (IEEE 1588) NTS8610 | Time accuracy relative to UTC (PTP / 1PPS): ±40 ns peak, with NTP at ±50 μs peak | Price on request | Quote only |
Brands in this kit: Atop Technologies
Why Indiott
A specialist stack, not a box-shifter
Brand-agnostic by design
We pick the best of each brand for the layer and the environment, not one vendor catalogue. Milesight, AquaIoT, Atop, Browan, SpecSens and Urban.io, chosen on merit.
The whole stack, one supplier
Sensing, connectivity, OT security, control and the dashboard come from one accountable team, so there is no finger-pointing when something needs to talk to something else.
Specified and supported in Britain
UK-based engineers scope the site, quote the kit and stand behind it, with compliance mapped to the regimes your auditors actually cite.
Honest kit, honest pricing
Prices are shown where we can, quoted fast where we cannot, and you get a straight answer and a bill of materials within one working day.
DEPLOYED IN THE FIELD
Compliance this answers to
| Standard | What it requires |
|---|---|
| IEC 61850 | the substation automation standard for MMS, GOOSE and station-bus interoperability, the language new IEDs expect to speak |
| IEC 61850-3 / IEEE 1613 | environmental and EMC type-testing for equipment installed inside substations, so kit survives the EMI, temperature and surge it will see |
| IEEE 1588v2 (PTP) | sub-microsecond time distribution for sequence-of-events, synchrophasors and protection schemes, with IRIG-B and GPS discipline |
| NIS Regulations / NCSC CAF and IEC 62443 | the regulatory and engineering basis for the IT/OT boundary, network segmentation and access control on critical grid infrastructure |
What it costs, roughly
A single substation with one protocol gateway, a PTP grandmaster and a pair of redundant-ring managed switches is typically a low-five-figure hardware spend before installation and commissioning; serial gateways for legacy IEDs add a few hundred pounds each. A DNO programme across many substations is quoted per-site against your protocol mix and redundancy requirement. Exact figures, sized to your IED list and SCADA master, come back within one working day.
Frequently asked questions
Which protocols does a substation protocol gateway translate?
The ATOP PG-series terminates IEC 61850 MMS and GOOSE on the station bus and presents DNP3 or IEC 60870-5-101 and 104 to the SCADA master, with the point mapping configured per site. Models run from the compact PG5901 up to the higher density PG5916A. Send your relay list and master protocol and we confirm the mapping before you order.
Do I need IEC 61850-3 rated switches, or will a normal industrial switch do?
Office and light industrial switches rarely survive substation EMC. Specify switches type-tested to IEC 61850-3 and IEEE 1613, which covers the surge, electromagnetic interference and wide temperature range found inside a substation. The ATOP EHG7xxx managed range is built to that standard and supports redundant ring recovery, so a single fibre break does not drop the station bus.
Why fit a PTP grandmaster if the IEDs already have GPS?
Per-device GPS means many antennas, many failure points and no common reference when one is shaded or blocked. A GPS-disciplined IEEE 1588v2 grandmaster such as the ATOP NTS8600 or NTS8610 distributes one authoritative time across the whole station bus, with IRIG-B output for older relays, so sequence-of-events and protection records line up to sub-microsecond accuracy.
How do I bring legacy serial relays and meters onto the station bus?
Use a rugged serial gateway to put Modbus RTU, IEC 60870-5-101 and other RS-232, RS-422 or RS-485 devices onto Ethernet, then let the protocol gateway present them to SCADA. We stock 18 rugged serial and Modbus gateways with DIN-rail mounting and wide-range DC input, so working legacy relays stay in service rather than being replaced.
How does this fit the NIS Regulations and the NCSC CAF?
Both expect a defensible boundary between the station LAN and corporate IT. In practice that means IEC 62443 zones and conduits, segmentation enforced at the switch and gateway, least-privilege engineering access, and logging that shows who changed what. The protocol gateway becomes the single controlled crossing point instead of a flat routed link into the substation.
What does substation kit cost and how do I get a price?
Substation hardware is quoted rather than listed, because price depends on port count, protocol mix, redundancy and whether you need IRIG-B or PPS outputs. Send your IED list, SCADA master protocol and the number of sites through the quote form and we return a priced specification, sized per substation, within one working day.
Related
Buying this in the UK
- Supplied by Indiott, a trading name of PSI Technologies Limited (Companies House 03689664, VAT GB 730 2340 83), Hampshire, United Kingdom.
- Every price is published ex VAT at indiott.com — no quote needed to see it.
- Typically dispatched within 14 working days from the UK, on a VAT invoice.
- Call 023 9223 3611 or request a quote.
Next step
Scope it with an engineer.
Tell us the site, the assets and the constraint. You get a bill of materials and a straight answer within one working day.
- A bill of materials sized to your site
- Priced ex VAT, UK entity, no login wall
Rather talk it through? Call 023 9223 3611
Received. An engineer has it.
You will hear back within one working day with the parts, the prices and the lead time. A confirmation is on its way to your inbox.
If it is urgent, call 023 9223 3611.