CHARGE CONTROLLER SOLAR MPPT STUDER
CHARGE CONTROLLER SOLAR MPPT VARIOSTRING VS-70
The VarioString VS-70 is a MPPT 70A solar charge controller. It is recommended for PV capacities up to 4.2kWp, and charges the battery with a maximum current
of 70A. The solar modules are connected in series to form one single string (up to 600V) connected to the VS-70, all this without special tools and with reusable connectors
CHARGE CONTROLLER SOLAR MPPT VARIOSTRING VS-120
The VarioString VS-120 is a MPPT 120A/48V solar charge controller. Fully isolated dual MPPT inputs up to 600V (Voc) (2×3.5kWp) or up to 900V (Voc) (7kWp) with MPPT inputs in series.
■ Reduces Balance of System costs: eliminates expensive wiring for parallel strings, saving wires, connectors, junction boxes, fuses, space, time etc
■ Safe, simple and trouble free connection: with SUNCLIX™ (Phoenix Contact “tool free”) PV connector
■ Fully protected against wrong wiring
■ Simplified safety rules by full isolation between PV and battery and between MPPT inputs
■ MPPT efficiency >99%: fast precise best in class tracking algorithm. World champion for efficiency in isolated converter with >98% conversion efficiency
■ Low self-consumption: < 1,2W in night mode
■ 4 step charger fully programmable for longer battery life
■ Optimal usage in a Xcom-LAN or Xcom-GSM
| Label | Value |
|---|---|
| Certifications | EMC 2004/108/CE – LV 2006/95/CE – RoHs 2002/95/CE – IEC/EN 62109-1:2010 – IEC/EN 61000-6- 3:11 - IEC/EN 61000-6-12005 |
| Warranty | 5 years |

STUDER - MPPT CHARGE CONTROLLER VARIOSTRING VS-70/120 in comparison
MODELLO | VarioString VS-70 | VarioString VS-120 |
|---|---|---|
SKU | 20436D | 69907T |
Maximum output current | 70 A | 120 A |
Nominal battery voltage | 48 V | 48 V |
Operating temperature | -20°C ÷ +55°C | -20°C ÷ +55°C |
IP protection | IP 54 | IP 20 |
Dimensions mm (“) | 120 x 220 x 350 (4.7 x 8.7 x 13.8) | 133 x 322 x 466 (5.2 x 12.7 x 18.3) |
Weight kg (lbs) | 5,5 (12.1) | 5,5 (12.1) |
STUDER - MPPT CHARGE CONTROLLER VARIOSTRING VS-70/120 Electrical characteristics PV array side
Electrical characteristics PV array side | VarioString Vs-70 | VarioString Vs-120 | VarioString Vs-120 | VarioString Vs-120 | VarioString Vs-120 |
|---|---|---|---|---|---|
Max. solar power recommended | 4200 Wp | 3500 Wp | 3500 Wp | 7000 Wp | 7000 Wp |
Maximum current (Isc) | 13 A | 13 A | 13 A | 26 A | 26 A |
Max. open circuit voltage (Voc) | 200 V a 600 V | 600 V | 600 V | 600 V | 900 V |
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