S U N W A Y S T E C H N O L O G I E S C O . , L T D .
H y b r i d I n v e r t e r
STH 3~8KTL-HS
User Manual
EN
Page 1: ...S U N W A Y S T E C H N O L O G I E S C O LT D H y b r i d I n v e r t e r STH 3 8KTL HS User Manual EN...
Page 2: ...t Installation 22 4 1 Selection of Installation Location 22 4 2 Mounting the Inverter standard bracket 24 4 3 Mounting the Inverter Including L shaped plate 26 4 4 Electrical Connection 29 4 5 Communi...
Page 3: ...not constitute any express or implied guarantee 1 Preface 1 Preface 1 1 Overview This manual is an integral part of Sunways STH 3 8kW series single phase high voltage hybrid inverters hereinafter refe...
Page 4: ...f the following circumstances Damages caused by irregular transportation Damages caused by incorrect storage installation or use Damages caused by installation and use of equipment by non professional...
Page 5: ...ve personal injury and equipment damage information 2 4 1 Symbol on the Hybrid Inverter Power indicator Grid status indicator Inverter status indicator Battery level indicator 2 4 2 Symbol on the Inve...
Page 6: ...ne the PV array lithium battery loads and power grid to realize intelligent power management and dispatching 3 1 2 Models The STH 3 8kW series hybrid inverter contains 10 models which are listed below...
Page 7: ...e than the Pmax the power exceeded Pmax cannot be higher than the inverter max output power will be supplied by the inverter Inverter will use power from PV array to supply loads first and battery sec...
Page 8: ...in the predetermined period Mode 4 PV Inverter Loads Grid Battery Inverter will use power from PV and battery to supply loads in the predetermined period and the insufficient part will be supplied by...
Page 9: ...ide view Figure 3 4 Side view Figure 3 5 Bottom view 3 2 3 Inverter bottom view Figure 3 6 Inverter back view 175mm DC Switch Optional DC Input Terminal Back Rail Battery Input Terminal Com2 Port Back...
Page 10: ...cription 4 Alarm Indicator Off The inverter is running normally Slow flashing The monitoring device is not connected to the router or is not connected to the base station Quick flashing The monitoring...
Page 11: ...nal Battery Plug Sunways Meter 3 Product Introduction 3 Product Introduction Figure 3 8 Packing list Back Up AC Terminal 1 Cord End Terminal 6 Monitoring Device 1 Optional On Grid AC Terminal 1 Cord E...
Page 12: ...n light and rain Install the inverter at the eye level for easy inspection of screen data and further mainte nance The ambient temperature of the inverter installation location should be between 30 C...
Page 13: ...th is 80mm Figure 4 6 Fix the wall bracket Insert the expansion tubes into the holes and tighten them then fix the bracket onto the wall with expansion screws by using a cross screwdriver as shown in...
Page 14: ...shaped plate in the accessory bag then fix the L shaped plate to the mounting bracket Figure 4 10 Bracket assembly Use an electrical driller with 10mm diameter bit to drill 5 holes in the wall with 80...
Page 15: ...e Sunways has the right to refuse all damages caused by the mixed use of terminals Attention Moisture and dust can damage the inverter ensure the cable gland is securely tightened during installation...
Page 16: ...munication BACK UP The additional grounding hole ON GRID PV1 Breaker E BAR N BAR Breaker RS485 2 Breaker Main Switch Breaker Sunways CT CT Switch Breaker L L N N PV2 PV1 PV2 RJ45 BMS RJ45 Meter B B Ba...
Page 17: ...sisting surge voltage shock and improving EMI perfor mance Inverters must be well grounded For a system with only one inverter just ground the PE cable For a multi inverter system all inverters PE wir...
Page 18: ...2 5 4mm2 7mm Cable type Conductor cross sectional area mm General photovoltaic cable Scope mm Recommended value mm 2 5 4 0 4 0 Disassemble the connector in the accessory bag as shown in Figure 4 18 In...
Page 19: ...nnection Disconnect the AC breaker on the grid side Disconnect the breaker on the battery side Turn the inverter DC switch to the OFF position Make sure the maximum input voltage of battery is within...
Page 20: ...on and the polarity is correct Insert the positive and negative connector into the inverter battery terminals respectively and a click sound represents the assembly in place as shown in Figure 4 26 Fi...
Page 21: ...P ON GRID Single hole seal ring Put the cord end terminals on the stripped conductors one by one and press with some pressure to make it tightly locked with the conductors as shown in Figure 4 29 Figu...
Page 22: ...ble to be touched by children Sunways CT integrated a cable with length of 2m and could be extended to 5m at max 4 4 6 Meter and CT connection 4 Product Installation 4 Product Installation Figure 4 30...
Page 23: ...lowed inserted cable diameter is 16mm If the max current through the CT exceeds the rated current or the cable diameter is wider than 16mm please contact Sunways for help CT To Sunways Meter Power Met...
Page 24: ...to shut off PARCAN Parallel CAN communication bus interface EMS EMS power dispatching interface RLYOUT Dry contact output a group of normally open contact passive dry contact Inverter communication in...
Page 25: ...EMS and relay output dry contact use the 6pin ter minal on the right side and you can use the matching 6pin terminal in the accessory box to make the connection as shown in Figure 4 43 Terminal defini...
Page 26: ...Sunways doesn t provide the DRED device for the customer DRED connection uses the 6pin terminal on the left side and you can use the matching 6pin terminal in the accessory box to make the connection...
Page 27: ...herwise please refer to the QUICK INSTALLATION GUIDE which is attached to the accessory bag 5 Start and Stop 5 1 Start Inverter When starting the inverter follow these steps Turn the DC switch in the...
Page 28: ...eqA Freqb FreqC Meter E Day Meter E Total H Total Product Model General Settings Advanced Settings WorkMode Set Battery_ID Set Setting Setting Main Window Wai ng Checking Normal Fault Info Main Window...
Page 29: ...ffGrid Reduce the switching sensitivity of the On Off grid applied to the places where the grid is unstable or inverter always entered off grid mode for some reasons OffGrid ReConn When the power grid...
Page 30: ...ss 1s switch window Long press 3s enter the lower Menu No need to press just wait Test Pass Fail Auto Test CEI 0 21 Auto Test Record IPS Item Test Null Password 1111 Test Result Display IPS Item Test...
Page 31: ...f it is Extend the voltage protection range if it is allowed by the electricity company Grid Frequency Fault Check whether the AC cable is correct and well connected Change to another country with wid...
Page 32: ...correct service Always keep in mind that the inverter is powered by dual sources PV strings and utility grid Before any service work observe the following procedure DisconnecttheACcircuitbreakerandthe...
Page 33: ...3KTL HSS STH 3 6KTL HSS STH 3KTL HS STH 3 6KTL HSS STH 4 2KTL HS Efficiency Max Efficiency 97 6 97 6 97 6 97 6 97 6 European Efficiency 97 0 97 0 97 0 97 0 97 0 Battery Charged by PV Max Efficiency 98...
Page 34: ...rentPower kVA 6 60s 6 60s 7 8 60s 9 1 60s 10 60s Voltage Harmonic Distortion 3 LinearLoad 8 Technical Parameters Model STH 4 6KTL HS STH 5KTL HS STH 6KTL HS STH 7KTL HS STH 8KTL HS Efficiency Max Effi...
Page 35: ...he grid means the maximum power imported from the utility grid used to satisfy the backup loads and charge the battery The output power will exceed the rated value only when the power in the PV array...
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Page 37: ...S11 00034 00 No 1 Second Road Green Industrial Zone Chongshou Town Cixi City ZheJiang Province PRC www sunways tech com service sunways tech com...
