Deye SUN-50K-SG01HP3-EU-BM4 User Manual page 13
Hybrid inverter
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3.4 Grid connec�on and backup load connec�on
· Before connec�ng to grid, please install a separate AC breaker between inverter and grid. Also,
it is recommended that installs an AC breaker between backup load and inverter.This will ensure
the inverter can be securely disconnected during maintenance and fully protected from over
current. For the 25/30/40/50KW model, the recommended AC breaker for backup load is
180A. For the 25/30/40/50KW model, the recommended AC breaker for grid is 180A.
· There are three terminal blocks with "Grid" "Load"and "GEN" markings. Please do not misconnect
input and output connectors.
All wiring must be performed by a qualified personnel.It is very important for
system safety and efficient opera�on to use appropriate cable for AC input
connec�on. To reduce risk of injury, please use the proper recommended cable
as below.
Model
25/30/40/50KW
Model
25/30/40/50KW
Please follow below steps to implement Grid, load and Gen port connec�on:
1. Before making Grid, load and Gen port connec�on, be sure to turn off AC breaker or
disconnector first.
2. Remove insula�on sleeve 10mm length, insert the wires according to polari�es indicated on
the terminal block. Make sure the connec�on is complete.
L1
N
E-BAR
backup load connec�on
(2/0~3/0AWG)
Grid connec�on
(2/0~3/0AWG)
Chart 3-3 Recommended Size for AC wires
L3
L2
PE
Cross section（mm ）
Range
70~95
Cross section（mm ）
Range
70~95
LOAD
E-BAR
- 11 -
Recommended value
70(2/0AWG)
Recommended value
70(2/0AWG)
GEN
GRID
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Questions and answers
الانفرتر لايستحيب الشحن من الكهرئبه العامة ثلاثي الاطوار
The Deye SUN-50K-SG01HP3-EU-BM4 inverter may not be responding to charging from the three-phase power supply due to several possible reasons:
1. Insufficient Ventilation – If the inverter is not properly ventilated, it may overheat and prevent charging.
2. Incorrect Use or Operation – Improper configuration or installation could prevent the inverter from functioning correctly.
3. Failure to Comply with Safety Standards – If the system is not installed according to regulations, it may not operate as expected.
4. Damage from External Factors – Natural disasters, overvoltage, or electrical surges could have affected the inverter.
5. Battery Configuration Issues – The inverter supports lithium-ion batteries with a voltage range of 160-800V. Incorrect battery settings or connections may prevent charging.
6. Communication Failure – If the CAN or RS485 communication ports are not properly connected to the battery management system (BMS), the inverter may not charge.
7. Incorrect Priority Settings – If the charging priority is set incorrectly via the LCD settings, it may not charge from the three-phase supply.
8. Protection Mechanisms Activated – Built-in protections against overload, over-temperature, or short circuits may be preventing charging.
Checking battery connections, communication ports, ventilation, and configuration settings should help identify and resolve the issue.
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