West Control Solutions presents a range of thyristor power controllers which have been designed to switch 3 legs of 3 phase loads.
About Thyristor
These thyristor units are ideal for 3 phase configuration with neutral connection, normal (Relay S or Relay M) or variable resistive loads and transformer load types (PM3000-3PH).
Relay S- 3PH = Simple on/off firing with a DC logic input, time proportioned burst firing with a DC linear input (basic firing selectable between 4,8 or 16 cycles)
Descriptions of Relay M – 3PH Thyristor Power Controller
Relay M – 3PH = Time proportioned burst firing with a DC linear input (fully adjustable burst firing (3 to 255 cycles)), front panel display & keypad plus RS485 comms as standard.
PMA3000 – 3PH = More complex load requirements that may need phase angle firing, delayed triggering, or features such as feedback, current limit etc.
Benefits & Features:
- RS485 Comms
- MODBUS Protocol Standard
- Frontal Key Pad to configure the unit and to read V,I and Power
- Configurablity via RS485, USB Port and frontal Key Pad
- Microprocessor based electronic circuit fully isolated from power
- Universal input signal: RS485,Pot, Analog and SSR
- Configurable Control Mode: V, I, V2 and VxI
- Heather Break alarm to diagnose partial or total load failure and Thyristor Short circuit
- Digital input configurable
- Fuse and Fuse Holder Standard
- Current transformer integrated in Fuse Holder
- Comply with EMC, cUL pending
- IP20 Protection
- DIN RAIL mounting
Specification:
- up to 500A
- 3, 4 or 6 wire
- 24Vac to 690Vac Supply
- DC logic (SSR)
- 4-20mA or 0-10V DC linear inputs
- 10K Pot or RS485 Comms input
- Zero Crossing
- Burst Firing
Source : www.west-cs.co.uk
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