ALSTOM RPH3/PS125b Controlled Switching Device,CT1VT220/TCR

Application alarm: If the reference voltage exceeds the limit, the operation time is abnormal, the compensation value exceeds the limit, etc., the LED "4" will be triggered.

Relay output: 5 relays (1 monostable+4 bistable), which can be configured with alarm correlation logic through Web MMI.

Data recording and communication

Real time data: View parameters such as voltage, current, temperature, etc. through Web MMI, with a refresh rate of 3 seconds or 20 seconds.

Switching record: Stores the last 1025 operation data ("*. arch" file), supports downloading waveforms and event logs through RPH Manager software.

Network interface: Supports IP network (default IP 192.168.5.2), compatible with IEC 61850-9-2 communication protocol.

Application scenarios and switching strategies

Typical load switching scheme

Transformer/Three core Reactor:

Closing: Select the peak voltage (90 ° electrical angle) for the grounding neutral point, and select 0 ° or 180 ° for the isolation neutral point.

Trip: Select the current zero crossing point (corresponding to the peak voltage) to reduce overvoltage.

Single core reactor: The closing target point is the same as the transformer, and the tripping strategy is consistent.

capacitor:

Closing: Select voltage zero crossing (0 °) for the grounding neutral point and phase voltage zero crossing for the isolation neutral point.

Trip: Select the zero crossing point of the current to avoid heavy impact.

Transmission line:

Inductive VT: select voltage zero crossing for closing;

Capacitive VT: It is necessary to evaluate the residual charge in the circuit and select the peak voltage for closing.

Inductive load with NGR: Select the neutral point mode based on the inductance ratio r=LL N, and use a custom switching program when r ≥ 0.3.

Switch program configuration

Built in preset programs (transformers, reactors, capacitors), supporting user-defined modes (User Mode), can adjust the angle offset of each phase.

Technical parameters and specifications

Physical characteristics: 19 inch 4U rack, dimensions 483 × 177 × 452mm, protection level IP20.

Electrical parameters:

Power supply: AC 100-240V/50-60Hz or DC 48-353V, power consumption<20W;

Coil driving voltage: DC 33-300V, maximum current 30A (300ms).

Measurement accuracy: Voltage/current sampling error ≤ 1%, operation time measurement error ≤ ± 0.1ms.

Environmental adaptability: Operating temperature -25 ℃~+50 ℃, storage temperature -40 ℃~+70 ℃, compliant with RoHS and EMC standards (such as IEC 61000-4-2/3/5)