Overview
The Sertel String-Monitoring box is a PV array junction box in which several strings can be connected in parallel. The String-Monitoring box collects, measures and monitors the input currents of the strings, assists in detecting failures, thus helping to minimize power and yield losses. The measured values are transmitted from the String-Monitor via Ethernet or wireless communication to the next String-Monitor in the communication bus up to the inverter.
KEY FEATURES:
- 1 to 24 input strings which can be customized.
- DC circuit breakers are of minimum 15OOV DC rating which are safe and reliable.
- DC fuses.
- SPD protection and numbers will depend on MPPT’s.
- Our smart DC combiner boxes can provide bus voltage with remote monitoring and it can even
generate alarm and send message to maintenance team.
| TECHNICAL DATA | OUTPUT | ||
|---|---|---|---|
| ENCLOSURE | NO OF DC OUTPUTS (+VE &- VE) | 1 | |
| MATERIAL | POLYCARBONATE / FRP | DC OUTPUT CABLE SIZE | UPTO 400 SQMM |
| DEGREE OF PROTECTION | IP 66 | DC OUTPUT CABLE EXIT | POLYAMIDE GLAND/ METALLIC GLAND |
| UV RESISTANCE | YES | OUTPUT CABLE TERMINATION | BOLT TYPE |
| LOCKING ARRANEMENT | PAIR LOCK & LATCH | INTERFACE CONNECTION RS 485 CABLE | RS 485 STANDARD |
| MOUNTING TYPE | WALL MOUNT / STRUCTURE MOUNT | RS 485 CABLE IN /OUT | POLYAMIDE CABLE GLAND |
| ELECTRICAL PARAMETER | SWITCH ON /OUT STATUS | AVAILABLE (OPTIONAL) |
|
| RATED DC VOLTAGE | 600V/1000V/1500V | SPD ON /OFF STATUS | AVAILABLE (OPTIONAL) |
| MAXIMUM CURRENT PER STRING | OPTIONAL UPTO 80A | MONITORING DEVICE | |
| MEASUREMENT VOLTAGE SUPPLY | 24V DC | MEASURING PARAMETERS | INPUT CURRENT, SYSTEM VOLTAGE, INTERNAL TEMPERATURE |
| DC MEASUREMENT RATING | UPTO 630A | INPUT CURRENT MONITORING | EACH STRING |
| SURGE PROTECTION DEVICE | VOLTAGE MEASUREMENT ACCURACY | (+/-)0.25% | |
| DC POWER SPD | YES | CURRENT MEASUREMENT ACCURACY | (+/-)0.25% |
| MODBUS SPD | YES | POWER CONSUMPTIONS | <3W |
| 600V/1000V/1500V | CLASS 2 SPD/ CLASS T1 +T2 SPD | ON-BOARD TEMPERATURE MEASURING RANGE | 0-100ᵒC |
| INPUT | SHIELD CLAMP FOR EARTHING PROVIDED | YES | |
| CABLE ENTRY | BOTTEM | COMMUNICATION INTERFACE | RS 485/FO/ WIRELESS |
| NO.OF.DC INPUT(+VE & -VE) | AS PER CLIENT REQUIREMENT | OPERATING TEMPERATURE | (-10) TO 70ᵒC |
| INPUT DC CABLE TERMINATION | MC4/PG GLAND | SERTEL MONITORING BOX TEST STANDARDS | |
| FUSES | UPTO 80A | TEST STANDARDS | IEC 61439-2:2011 |
| EARTH CABLE CONNECTION | EARTH TERMINAL UPTO 25SQMM | ||
| EARTH CABLE ENTRANCE | POLAMIDE CABLE GLAND | ||
| MONITORING DEVICE POWER SOURCE | AUXILIARY POWER SUPPLY / IN BUILT (DC-DC CONVERTER |