STS 5000 & STS 4000  - Multifunction substation maintenance & commissioning test systems for current, voltage and power transformers.

This primary current injection testing system is designed to perform primary tests requested in substations commissioning. It allows to perform accurate tests on CTs, VTs, PTs and ground grid.
• Fully automatic.
• Primary injection testing capabilities: up to 800 A or up to 3000 A, with the optional module BUX 3000 (only STS 5000 and STS 4000).
• Variable output frequency: 15 - 500 Hz.
• Power dissipation factor test with the optional module TD 5000 ( voltage up to 12 kV).
• 2000 v AC high-pot test.
• Advanced Test & Data Management Software for test set control, results storage and analysis. 
• Remote control with PADS - Power Apparatus Diagnostic Software for automatic testing, assessment and report.
• USB interface and Ethernet interface for PC connection.
• Compact and lightweight.