The GE Entellisys System Test Kit, also known as the ETSTESTKIT03 or DEH-233, is a portable instrument designed for field testing of the Entellisys Low Voltage Switchgear System. It allows users to verify the function and operation of the protection system by simulating power line characteristics for a single circuit breaker.
Overcurrent Protection Tests: Verifies Long Time, Short Time, Instantaneous, and Ground Fault protection functions.
Relay & System Protection Tests: Tests single-point relay protections, including Over/Undervoltage, Over/Underfrequency, Power Reversal, Phase Loss, and High Current.
TCC Curve Calibration: Validates the calibration of the Time-Current Characteristic (TCC) curve.
Trip & No-Trip Modes: Verifies physical circuit breaker actuation in “Trip mode” or validates control logic without opening the breaker in “No Trip mode”.
Ground Fault Defeat: Allows temporary suspension of Ground Fault functions during testing.
Automated Setup: Automatically reads system configurations from the Messenger, displays protection summaries, and logs results for reporting.
Testing Scope: Tests the entire downstream Entellisys protection chain, excluding the primary CTs, internal Messenger burden resistors, and PTs.
| Parameter | Specification / Accuracy |
| Power Supply | 120 VAC |
| Interface Channels | 7 analog channels + multiple digital I/O channels |
| Test Kit Voltage Accuracy | $\pm 0.05\%$ |
| Test Kit Frequency Accuracy | $\pm 0.05\text{ Hz}$ |
| Phase Angle Accuracy | $\pm 0.1^{\circ}$ |
| Timestamp Precision | $\pm 0.5\text{ ms}$ |
| Current Protection Accuracy (1X) | $\pm 6.5\%$ |
| Relay Protection Accuracy | $\pm 6.5\%$ |
| Ground Fault Accuracy (0.2X) | $\pm 2.0\%$ |
The test suite runs via a Windows application connected to the DAQ chassis:
Operating System: Windows XP SP3, Vista, 7, or 8 (32/64-bit); Windows Server 2003/2008 R2.
Processor: Pentium III / Celeron $1\text{ GHz}Â or faster.
RAM: 1\text{ GB}Â (32-bit) / 2\text{ GB}Â (64-bit) minimum.
Display Resolution: $1024 \times 768Â minimum.
Reporting: Microsoft Excel 2010 or compatible for automated test report generation.
