Solis Meter and CT Compatibility Guide : Service Center

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Solis Meter and CT Compatibility Guide

Introduction

At Solis, ensuring that the correct meters and CTs are used with our inverters is essential for reliable operation. Using an incompatible device can lead to malfunctions, loss of monitoring functionality, and the inability for our Service team to provide support.

✅ Always check this guide before installing.
✅ If you are unsure, contact Solis Service for confirmation.
❌ If a non-listed meter or CT is installed, Solis cannot provide support.
? If you need to purchase a compatible meter, please contact your local distributor.

Section 1: Current Transformers (CTs)

1. Solis 4G/5G/S5/S6 CT Clamp 10M (UK only)

Model: Yuanxing CTSA016 3000:1 100A:33.33mA

A black and white cable

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Description:
1. Used on 1-phase grid-tied inverters with 2-pin CT port or 4-pin CT/Meter port for internal export power limiting and consumption monitoring.
2. Used on RAI / S5 AC-coupled inverters with 2-pin CT port to measure external PV inverter power.
3. UK inverters only.
Compatible PV inverters:
- Solis-mini(700-3600)-4G
- Solis-1P(2.5-6)K-4G
- Solis-1P(7-8)K-5G
- S5-GR1P(0.7-3.6)K-M
- S5-GR1P(2.5-6)K
- S5-GR1P(7-10)K
- S6-GR1P(0.7-3.6)K-M
- S6-GR1P(2.5-6)K
- S6-GR1P(2.5-6)K-S
- S6-GR1P(7-8)K2
- S6-GR1P(7-10)K03-NV-ND
Compatible hybrid inverters:
- RAI-3K-48ES-5G
- S5-EA1P3K-L

2. CT – RAI (Parallel Systems)

Model: YuanXing CTSA035 - 350A/50mA

A white box with a hole in it

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Description: Used when multiple S6-EH1P(3-8)K-PLUS inverters are installed in parallel. The master inverter connects this CT for system control.
Compatible hybrid inverters:
- S6-EH1P(3-8)K-PLUS (parallel systems only)

3. CT-1P/3P-Eastron (100A/50mA)

Model: ESCT-TA16-100A/50mA

A black device with a white label

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Description: Used on 1-phase and 3-phase hybrid inverters for hybrid control logic, export power limiting, and consumption monitoring.
Compatible hybrid inverters:
- S6-EH1P(3-8)K-L-PRO/PL
- S6-EA1P(3-6)K-L (Grid Side)
- S6-EH3P(8-15)K02-NV-YD-L
- S6-EH1P(12-16)K03-NV-YD-L

4. ESCT-T50 (300A/5A, direct CT connection)

Model: Eastron ESCT-T50 - 300A/5A

A black device with a wire

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Description: Used directly on 3-phase hybrid inverters, no external meter required. Provides hybrid control logic, export limiting, and consumption monitoring.
Compatible hybrid inverters:
- S6-EH3P(29.9-50)-H

5. CT-1P-Eastron (100A/100mA)

Model: ESCT-TA16 100A/100mA

A black and white device with a black cord

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Description: Used on S6 EA AC-coupled hybrids for measuring the production of an external PV inverter.
Compatible hybrid inverters:
- S6-EA1P(3.6-6)K-L (external PV inverter measurement)

6. CT used with Eastron meter (1-phase SDM120CTM)

Model: ESCT-TA16 100A/100mA

A black and white device with a black cord

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Description: For use with Eastron single- and three-phase meters, enabling hybrid control and monitoring.
Compatible hybrid inverters:
- RAI-3K-48ES-5G
- S5-EH1P(3-6)K-L
- S6-EH1P(3-6)K-L
- RHI-3P(5-10)K-HVES-5G
- S6-EH3P(3-10)K-H-EU

7. Direct CT Connection (S6 Hybrids, no meter required)

Model: ESCT-TA16 120A/40mA

EASTRON - Transformador de potencia de núcleo dividido EASTRON 120A ESCT-TA16 ZR20220513 - Fusibles y rieles - ESCT-TA16

Description: Provides direct measurement for certain new S6 hybrid inverters without the need for an external meter.
Compatible hybrid inverters:
- S6-EH3P(8-15)K02-NV-YD-L
- S6-EH3P(12-20)K-H

8. CT used with Acrel meters (ACR10R16DTE and ACR10R16DTE4)

Model: XH-SCT-T16/120 (120A:40mA)

A black device with red wires

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Description: Used in combination with Acrel single- and three-phase meters.
Compatible inverters:
- RHI-(3-5)K-48ES
- RHI-(3-6)K-48ES-5G
- S5-EH1P(3-6)K-L
- RAI-3K-48ES-5G
- Solis-Mini(0.7-3600)-4G (Europe)
- S5-GR1P(0.7-3.6)K-M (Europe)
- S6-GR1P(0.7-3.6)K-M (Europe)
- Solis-1P(2.5-6)K-4G (Europe)
- S5-GR1P(2.5-6)K (Europe)
- S6-GR1P(2.5-6)K (Europe)
- Solis-1P(7-8)K-5G (Europe)

Section 2: Meters

Meters provide more advanced monitoring and control than CTs alone. They allow for export power limitation, hybrid control logic, and detailed consumption monitoring. Below are the supported meters and their compatibility:

1. Eastron SDM120CTM (1-Phase)

Type: 1-phase Eastron
SDM120CTM (External CT, secondary 100mA or 5A, depending on variant – see compatibility below).

A close up of a device

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Description: Used on 1-phase hybrid inverters (and selected 1-phase grid-tied inverters) to enable hybrid control logic, export power limitation, and consumption monitoring.
Compatible inverters:
- PV inverters:
  - S5-GR1P(7-10)K
  - S6-GR1P(2.5-6)K-S
  - S6-GR1P(0.7-3.6)K-M
  - S6-GR1P(7-8)K2
  - S6-GR1P(7-10)K03-NV-ND
- Hybrid inverters:
  - RAI-3K-48ES-5G
  - RHI-(3-5)K-48ES
  - RHI-(3-6)K-48ES-5G
  - S5-EH1P(3-6)K-L
  - S6-EH1P(3-6)K-L
  - S6-EH1P(3-8)K-L-PRO/PLUS
  - S6-EA1P(3-6)K-L
  - S6-EH1P(12-16)K03-NV-YD-L (External CT, secondary 5A)

2. Eastron SDM630MCT 40mA (3-Phase)

Type: 3-phase Eastron SDM630MCT (External CT, secondary 40mA) (ESCT-TA16 120A/40mA).

A white electronic device with a screen

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Description:

1. Used on 1-phase hybrid inverters to do hybrid control logic and export power limit

function / consumption monitoring function (inverter on phase L1 of the

3-phase meter).

2. Used on 1-phase grid tied inverters to do internal export power limit function/

consumption monitoring function (Inverter on phase L1 of the 3-phase meter).

3. Used on 3-phase hybrid inverters to do hybrid control logic and export power limit

function / consumption monitoring

function.

4. Used on 3-phase grid tied inverters to do internal export power limit function /

consumption monitoring function.

Compatible inverters:

PV inverters:
- S5-GR1P(7-10)K
- S5-GR3P(3-20)K
- S5-GC(25-40)K
- S6-GC3P(25-36)K03-NV-ND
- S6-GC3P(40-60)K-NV-ND
Hybrid inverters:
- RHI-(3-5)K-48ES
- RHI-(3-6)K-48ES-5G
- RHI-3P(3-10)K-HVES-5G
- S5-EH1P(3-6)K-L
- S6-EH1P(3-6)K-L
- S6-EH1P(3-8)K-L-PLUS
- S6-EH3P(5-10)K-H
- S6-EA3P(5-10)K-NV-ND-H
- S6-EH3P(8-12)-LV-H
- S6-EH3P(8-15)K02-NV-YD-L
- S6-EH1P(12-16)K03-NV-YD-L
- S6-EH3P(12-20)K-H
- S6-EH3P(15-30)K-H-LV-ND
- S6-EH3P(29.9-50)-H

3. Eastron SDM630MCT V2 (3-Phase)

Type: 3-phase Eastron SDM630MCT V2 (External CT, secondary 5A)

A white electronic device with a screen

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Description: Used on 3-phase hybrid inverters to do hybrid control logic and export power limit function / consumption monitoring function.
Compatible inverters:
- S6-EH3P(5-10)K-H
- S6-EH3P(12-20)K-H
- S6-EH3P(29.9-50)-H
- S6-EH3P(8-15)K02-NV-YD-L

4. Acrel DDSD1352 (Inline, 1-Phase)

Type: Built-in CT, inline meter (up to 60A).

A white device with a display

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Description: Used on 1-phase grid tied inverters WITH 2PIN METER PORT or 4PIN CT/METER PORT to do internal export power limit function/consumption monitoring function..
Compatible inverters:
- Solis-mini(700-3600)-4G
- Solis-1P(2.5-6)K-4G
- Solis-1P(7-8)K-5G
- S5-GR1P(0.7-3.6)K-M
- S5-GR1P(2.5-6)K
- S5-GR1P(7-10)K
- S6-GR1P(0.7-3.6)K-M
- S6-GR1P(2.5-6)K
- S6-GR1P(2.5-6)K-S
- S6-GR1P(7-8)K2
- S6-GR1P(7-10)K03-NV-ND

5. Acrel ACR10R16DTE / XH-SCT-T16/120 (1-Phase with external CT)

Type: METER: 1-phase Acrel ACR10R-16DTE (External CT Secondary 40mA).

A white electronic device with wires

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Description:

1. Used on 1-phase grid tied inverters WITH 2PIN METER PORT or 4PIN CT/METER PORT to do internal export power limit function/ consumption monitoring function.

2. Used on RAI/RHI/S5 1-phase hybrid inverters to do hybrid control logic and export power limit function/ consumption monitoring function."

Compatible inverters:
- PV inverters:
  - Solis-mini(700-3600)-4G
  - Solis-1P(2.5-6)K-4G
  - Solis-1P(7-8)K-5G
  - S5-GR1P(0.7-3.6)K-M / S6-GR1P(0.7-3.6)K-M
  - S5-GR1P(2.5-6)K / S6-GR1P(2.5-6)K
  - S5-GR1P(7-10)K
  - S6-GR1P(2.5-6)K-S
  - S6-GR1P(7-8)K2
  - S6-GR1P(7-10)K03-NV-ND
- Hybrid inverters:
  - RAI-3K-48ES-5G
  - S5-EA1P3K-L
  - RHI-(3-5)K-48ES
  - RHI-(3-6)K-48ES-5G
  - S5-EH1P(3-6)K-L

6. Acrel ACR10R-16DTE4 / XH-SCT-T16/120 (3-Phase with external CT)

Type: 3-phase Acrel ACR10R-16DTE4 (External CT Secondary 40mA)

A close-up of a device

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Description:

1. Used on 1-phase hybrid inverters to do hybrid control logic and export power limit function/ consumption monitoring function(Inverter on phase A of the 3PH meter).

2. Used on 3-phase hybrid inverters to do hybrid control logic and export power limit function/ consumption monitoring function.

Compatible inverters:
- RAI-3K-48ES-5G
- S5-EA1P3K-L
- RHI-(3-5)K-48ES
- RHI-(3-6)K-48ES-5G
- S5-EH1P(3-6)K-L
- RHI-3P(5-10)K-HVES-5G

7. Acrel DTSD1352 10 (Inline, 3-Phase <40kW)

Type: 3-phase Acrel DTSD1352 (INLINE 80A)

A white device with a display

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Description: Used on 3-phase grid tied inverters to do internal export power limit function / consumption monitoring function (<40kW Inline)
Compatible inverters:
- Solis-3P(3-20)K-4G
- Solis-3P(5-10)K-4G-LV
- Solis-(25-40)K-5G
- Solis-(15-23)K-LV-5G
- S5-GR3P(3-20)K
- S5-GR3P(5-10)K-LV
- S5-GC(25-40)K
- S5-GC(15-23)K-LV
- S6-GR3P(5-10)K03-NV-ND-AU
- S6-GC3P(25-36)K03-NV-ND
- S6-GC3P(15-20)K03-LV-ND

8. Acrel DTSD1352 + 3 x AKH-.66 K24 CTs (150A:5A, 3-Phase)

Type: Acrel DTSD1352 (External CT secondary, 5A)

A white device with buttons and a few black wires

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Description: Used on 3-phase grid tied inverters to do internal export power limit function / consumption monitoring function.
Compatible inverters:
- PV inverters (full list):
  - Solis-3P(3-20)K-4G
  - Solis-3P(5-10)K-4G-LV
  - Solis-(25-40)K-5G
  - Solis-(15-23)K-LV-5G
  - S5-GR3P(3-20)K
  - S5-GR3P(5-10)K-LV
  - S5-GC(25-40)K
  - S5-GC(15-23)K-LV
  - S6-GR3P(5-10)K03-NV-ND-AU
  - S6-GC3P(25-36)K03-NV-ND
  - S6-GC3P(15-20)K03-LV-ND
  - S6-GC3P(40-60)K-NV-ND
  - S6-GC(23-36)K-LV-ND
  - S6-GC(80-125)K (300A)
  - S6-GC(50-75)K-LV (300A)
  - S6-GC3P150K07-ND (300A)
  - S5-GC(50-60)K
  - S5-GC(25-36)K-LV
  - S5-GC(80-110)K (300A)
- Hybrid inverters:
  - S6-EH1P(3-8)K-PLUS (when parallel)

Section 3: Export Power Managers (EPMs)

1: Solis EPM1-5G (Single-Phase Export Power Manager)

Description: Used for single-phase inverters, controls export power.
Compatible PV inverters:
- Solis-mini(700-3600)-4G
- Solis-1P(2.5-6)K-4G
- Solis-1P(7-8)K-5G
- S5-GR1P(0.7-3.6)K-M
- S5-GR1P(2.5-6)K
- S5-GR1P(7-10)K
- S6-GR1P(0.7-3.6)K-M
- S6-GR1P(2.5-6)K
- S6-GR1P(2.5-6)K-S
- S6-GR1P(7-8)K2
- S6-GR1P(7-10)K03-NV-ND

2: Solis EPM3-5G (Three-Phase Export Power Manager)

Description: Used on three-phase PV inverters.
Compatible PV inverters:
- Solis-3P(5-20)K-4G
- Solis-(25-50)K-5G
- Solis-(50-70)K-5G
- S5-GR3P(3-20)K
- S5-GC(25-50)K
- S5-GC(50-70)K
- S6-GR3P(3-20)K
- S6-GC(25-50)K
- S6-GC(50-75)K

3. Solis EPM Export Manager 5G PLUS (For 3Ph Sites)

Description: Dedicated for hybrid inverters, provides export limiting and load monitoring.
Compatible hybrid inverters:
- RHI-(3-6)K-48ES
- RHI-(3-6)K-48ES-5G
- RHI-3P(5-10)K-HVES-5G
- S6-EH3P(3-10)K-H-EU

4. Solis Solis-EPM3-5G-PRO (Three-Phase High-Voltage Hybrid EPM)

Description: Used on large-capacity hybrid systems.
Compatible hybrid inverters:
- S6-EH3P(29.9-50)K-H