Hardware specification/BTS2000

The Hardware consists of separate units mounted into a standard 19” control cubical. What units to be mounted depends on the requirements and what type of breakers are going to be tested. Important to know is that the system is expandable and subject to easy adaptation. Some basic sets of the most commonly used configuration of BTS2000 can be found here.

CM10 Control Unit

The control unit CM10 is a microprocessor-controlled unit used for control of external devices and data acquisition of contacts and transducers. The control unit performed specified tasks by software commands from the PC. It is connected to the PC by a serial communication link, type RS232.

Contact inputs Quantity: 36 (expandable) Screw terminal: X1 – X6 Measure voltage: 12 VDC Measure current: 10 mA Isolation to earth: 400 VDC Isolation between inputs: 400 VDC		Analogue inputs Quantity: 8 (expandable) Screw terminal: X7 and X8 Range: ±0.1V, ±1V, ±10V Accuracy: ±0.1% of range Isolation to earth: 400 VDC Isolation between inputs: 400 VDC
Communication ports Quantity: 6 Type: RS-232		Digital I/O Quantity: 16 (expandable) Voltage: 24VDC
High current output (option) Quantity: 1 Pole screws: 100 - 200A Output current 100 - 200 A during 100 ms Resistance range: 10—1000 µohm Accuracy: ± 1 µohm		Inputs for travel transducers Type: incremental encoder & analogue transducers Quantity: 3 of each type (expandable)
Data acquisition Sampling rate: up to 50kHz

IU20 Interface Unit

The Interface unit consists of functions to distribute voltage from the power supplies, such as coil motor and auxiliary voltage. Also it has an integrated security circuit that allows for connection of security switches around the testing area.

Relay functions for required signals is also provided.

The interface unit also distributes voltage to the units mounted in the BTS2000 cabinet. The Power supply for the equipment is 3x400VAC+N+PE.

PU1001/PD1001 Power Unit for coil supply

(also used as motor supply for middle voltage range breakers)
PU1001 is a combined AC/DC power unit specially designed for testing of circuit breakers. PD1001 is for DC supply only. They are able to withstand high current peaks and intermittent overloads.

Four separate outputs, of witch one is directly connected to the output circuits and the other three are connected via electronic trigger devices, are available (Can be expanded to eight). The trigger outputs are intended for coil supply and the direct output is for motor supply. The AC voltage output is of low drop transformer type.

The DC output is of high capacitance type and can supply peaks of several kilo amperes, because of that the trigger device outputs are internally current limited to protect them selves. An interlock function is also included.

Main data PU1001:
Continues power out £ 1000 VA *
Continues current out £ 12 A *
Voltage range 10 – 300 V
Regulation at ratings DC < ±1 V
Regulation at ratings AC < 150 ms, to within ± 2 V
Trig device current limit > 25 A
Input power 230 VAC , 10 At

*Intermittent power out can be considerable higher.

Main data PD1001:
Continues power out £ 1000 VA *
Continues current out £ 16 A *
Voltage range 10 – 300 V
Regulation at ratings DC < ±1 V
Trig device current limit > 25 A
Input power 230 VAC , 10 At

*Intermittent power out can be considerable higher.

PU3001 Power Unit

PU3001 is a power unit specially designed for motor feeding in testing of circuit breakers. It is able to withstand high current peaks and intermittent overloads. The output is of low drop transformer type. An interlock function is also included.

Main data:
Continues power out £ 3000 VA*
Continues current out £ 30 A*
Voltage range 10 – 300 VAC/DC
Regulation transformer speed 20V/sec
Regulation at ratings £ 250 ms, to within ± 2 V
Input power 3*400 VAC +N +PE, Fuse 32 At

* Intermittent power out can be considerable higher.