Siemens PTS 5

Get Rental Quote

Get Sales Quote

The Siemens PTS-5 Portable Test Set is designed for testing the static overcurrent tripping systems used on the LA and RL line of low voltage power circuit breakers.

Description

The Siemens PTS 5 Portable Test Set is designed for performing secondary injection testing of the Static Trip III (STIII) overcurrent tripping system utilized on the RL breaker. The system is packaged in a self-contained briefcase and requires 120VAC to operate. The PTS 5 contains a microprocessor controlled constant current source which enables rapid verification of the performance of the STIII. The desired test current may be directly entered with a numeric keypad for ease of test configuration. The self-contained, automatically controlled digital timer allows simple verification of the time-current tripping characteristics. The system also provides a regulated DC voltage to allow functional testing of the tripping actuator.

The incoming power is converted to a filtered and regulated DC bus. From this DC supply, the testing current is generated using a current amplifier regulated by the microprocessor and a precision digital to analog converter. This provides for stable test current even when the incoming line voltage fluctuates. This feature helps to eliminate discrepancies that may occur if a line-derived current source is used for testing. The test current is applied to the current inputs on the STIII, either by a jumper cable for on-breaker testing, or alternatively, the STIII may be connected to a terminal block on the face of the PTS5 for standalone testing. The STIII connection also provides for the trip feedback that stops the clock and the test current automatically.

ECP Phone
Top