Growatt MID 15–30KTL3-X / X2

Commercial PV inverter

Growatt groups MID 15–25KTL3-X and MID 17–30KTL3-X2 on one product page, but they have separate datasheets and manuals. Both use two MPPTs; the X2 30KTL3-X2 is a different model from the three-MPPT 30KTL3-X2-1 in the larger MID X2 family. Monitoring, meter and DRM terminals must be selected from the correct manual. No direct Edge read or control path is verified.

Growatt MID 20–30KTL3-X2 inverter, the X2 member of the MID X and X2 range
  • RS485

Commercial PV inverter

Compatibility

Select the exact X or X2 interface first

The X and X2 manuals document different RS485 monitoring and meter pin assignments, plus optional USB logging. Neither retained manual establishes the installed firmware's complete third-party register map, client coexistence or Edge write permissions.

MID 15/17/20/22/25KTL3-X or MID 17/20/25/30KTL3-X2 in the two May 2026 Growatt datasheets. The two-MPPT MID 30KTL3-X2 here is not the three-MPPT MID 30KTL3-X2-1 from the separate 30–50 kW family. Excludes MID XH, X3, XL2 and other regional variants.

Models

Download
ModelsInterfaceRoute into Edge
MID 15/17/20/22/25KTL3-XTwo MPPTs; the May 2026 X datasheet gives IP65 and 27 A per MPPT on 15–22 kWUse the X manual. Its six-pin RS485 block assigns monitoring to pins 3/4 and anti-backflow meter to pins 5/6.
MID 17/20/25/30KTL3-X2Two MPPTs; the X2 datasheet gives IP66 and rating-dependent strings and input currentsUse the X2 manual. Its 16-pin block assigns monitoring A1/B1 to pins 3/4 and meter A3/B3 to pins 7/8; pins 5/6 are marked reserved BAT communication.
MID 30KTL3-X2 versus MID 30KTL3-X2-1Two-MPPT 30KTL3-X2 versus three-MPPT 30KTL3-X2-1 in the separate larger-family sheetDo not drop the -1 suffix or reuse the other family's electrical and interface assumptions.

Specifications

Growatt's May 2026 English sheets place five MID X variants at 15–25 kW and four MID X2 variants at 17–30 kW. Both groups have two MPPTs, but string allocation and input-current limits vary by exact rating. The X sheet gives IP65; the X2 sheet gives IP66.23

MID X variants
15, 17, 20, 22 and 25 kW; two MPPTs; IP652
MID X2 variants
17, 20, 25 and 30 kW; two MPPTs; IP663
30 kW X2 PV input
Two MPPTs, with two and three strings respectively3
X monitoring and meter
Monitoring pins 3/4, meter pins 5/6 in the X manual's six-pin RS485 block4
X2 monitoring and meter
Monitoring pins 3/4, meter pins 7/8, reserved BAT pins 5/6 in the X2 manual's 16-pin block5
Environment
-25 to +60 °C in both May 2026 sheets; check regional derating and installation limits23

Interface

Documented measurements and integration boundaries for MID 15–30KTL3-X / X2.

  • The X manual's monitoring and meter pin groups differ from the X2 manual's groups. Check the installed model and terminal diagram before connecting any cable.
  • A Growatt Shine USB logger, SEM controller and RS485 monitoring bus are different paths. Identify the actual source and ownership of every proposed value.
  • Inverter production is not independent point-of-connection import or export metering. No exact register, Edge template, read or write function is approved here.

Assessment

Two-MPPT MID 15–25KTL3-X and MID 17–30KTL3-X2 only. Use each model's own terminal drawing and installed firmware; no Edge read or write route is established.

InteroperabilityLimited
Both manuals document a monitoring RS485 pair, but X and X2 use different terminal assignments and no exact third-party point map is retained.45
AccuracyNot yet assessed
The readable points, scaling, units and invalid-value behaviour must come from the installed firmware's manufacturer map.45
SecurityNot yet assessed
The retained sources do not establish third-party authentication, encryption or read-only separation.45
ReliabilityLimited
Electrical limits are documented, while third-party coexistence, stale data and recovery remain site-test questions.235
RuggednessSupported with conditions
The separate datasheets publish IP65 for X and IP66 for X2 with operating limits, subject to installation conditions.23
ScalabilityLimited
The manuals mention monitoring multiple inverters, but do not guarantee the capacity of an additional third-party client.45
LifecycleSupported with conditions
Growatt publishes separate X and X2 sources; installed firmware and regional options must be confirmed before selecting an interface.2345

Setup

  1. Read the complete nameplate

    Record X or X2, all digits and suffixes, country grid configuration, serial number and firmware. Verify whether a 30 kW nameplate says 30KTL3-X2 or 30KTL3-X2-1.

  2. Use the matching terminal drawing

    The X manual uses a six-pin RS485 block with a 5/6 meter pair. The X2 manual uses a 16-pin block with a 7/8 meter pair and reserved 5/6 BAT pins. Photograph the installed connector before planning an interface.

  3. Trace logger and meter ownership

    Map Shine or SEM accessories, the USB logger, any inverter chain, CT or export meter and the point-of-connection meter. Do not treat a meter bus as a spare monitoring port.

  4. Ask for the firmware-matched protocol

    Require the exact third-party client role, register map, baud and address, function codes, data types, scaling, unavailable values, permissions and coexistence rules before a read-only trial.

  5. Keep control in its engineered system

    Export limits, ripple/DRM inputs and reactive-power settings need separate plant-control and protection review. This guide publishes no Edge write path.

Common questions

Are MID 30KTL3-X2 and MID 30KTL3-X2-1 interchangeable?
No. Growatt's two-MPPT 17–30 kW X2 sheet names MID 30KTL3-X2. The separate 30–50 kW X2 family documents MID 30KTL3-X2-1 with three MPPTs. Preserve the suffix when selecting documents and configuring a site.37
Can one terminal pinout be used for both X and X2?
No. Their manuals use different connector layouts. The X manual assigns the meter to pins 5/6; the X2 manual assigns it to pins 7/8 and marks 5/6 as reserved battery communication.45
Does RS485 or a Shine logger prove an Edge integration?
No. The manuals identify physical communication routes, but the retained documents do not establish a complete firmware-matched third-party register and permission contract or a free client connection at a particular site.45
Can the inverter replace the export meter?
No. Its generation reading and the independent grid-connection measurement answer different questions. Export limitation and settlement depend on the commissioned meter and control design.45

Sources

  1. MID 15-30KTL3-X/X2 product page (opens in a new tab) Growatt
  2. MID 15-25KTL3-X English datasheet, May 2026 update (opens in a new tab) (PDF) Growatt
  3. MID 17-30KTL3-X2 English datasheet, May 2026 update (opens in a new tab) (PDF) Growatt
  4. MID 10-25KTL3-X user manual, May 2023 (opens in a new tab) (PDF) Growatt
  5. MID 20-30KTL3-X2 user manual, November 2024 (opens in a new tab) (PDF) Growatt
  6. MID 20-30KTL3-X2 product page and exact X2 image (opens in a new tab) Growatt
  7. MID 30-50KTL3-X2 regional datasheet distinguishing the -1 model (opens in a new tab) (PDF) Growatt

Further reading

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