Insulation Tester ST2692

Highlights

• Contact monitoring (four-wire connection required)
• Short-circuit test with low voltage (~3–4V) before ramp start
• Voltage: 25V – 1000V
• Comfortable 5" color touch display
• Wide measuring range from 10kΩ – 100GΩ
• Comparator: PASS / FAIL
• Interfaces: Handler, analog output 0–4V, RS232C and USB Device/Host

Specifications

• Insulation resistance and leakage current measurement
  • Measuring range: 10kΩ – 100GΩ
  • Current ranges: 2µA, 20µA, 200µA, 2mA
  • Accuracy: >100nA ±2% / 10nA–100nA ±5% / ≤10nA ±10%
  • Test voltage accuracy: 1% ±1V
• Current limit: 2.4mA
• Operation: Manual start with 1 or 2 key presses or remote controlled
• Memory: 16 internal settings
• Up to 1000 screenshots on USB stick
• Range selection: Auto, Hold
• Measuring speed: Fast: 30–50ms / Medium: 200ms / Slow: 500ms
• Comparator: PASS and FAIL
• Automatic mains frequency compensation
• Power supply: 90–121V (60Hz), 198–242V (50Hz); 25VA
• Temperature and humidity: 0°C – 40°C, ≤80% RH
• Dimensions (W/H/D): 215/89/154 mm
• Weight: 1.9 kg
• CE compliant according to EN 50 191

Scope of Delivery

• ST26004B 2-wire test lead with BNC/alligator clip
• Power cable
• 37-pin adapter connector

The ST2692 is an intuitively operated insulation resistance tester in a modern design. It features a short-circuit check with ~3–4V low voltage before the actual measurement and contact monitoring at full test voltage (four-wire connection required). The measured values can be read on the graphic display with 3¾-digit resolution or output digitally via serial interface (RS232/USB), BCD-coded via the 37-pin I/O connector, and analog (0–4V).

Before starting the actual insulation resistance measurement, the ST2692 can perform a short-circuit check with a low voltage of ~3–4V. This prevents micro short circuits, for example from batteries, from being accidentally burned out and thus defective test objects being altered and not detected as faulty. If the resistance is at least 100kΩ, the measurement cycle continues.

After ramping up the voltage, an optional contact check can be performed. For this purpose, two additional connections of the ST2692, Contact Check High and Contact Check Low, must be connected separately to the test object. If the voltage applied to the test object can be measured at these additional connections, the test is successful and the actual measurement can begin.