Name: UNITROL 1020 ABB in stock
Availability: InStock

Description

Basic Specifications

Application: Excitation control for synchronous generators (rated power typically up to 100 MVA)
Supply Voltage:
- Control voltage: 110 VDC / 220 VDC (standard); 110 VAC / 220 VAC (optional)
- Power supply tolerance: ±15%
Operating Temperature Range: -25°C to +70°C (-13°F to +158°F)
Storage Temperature Range: -40°C to +85°C (-40°F to +185°F)

Excitation Control Performance

Regulation Accuracy: ≤ ±0.2% of rated terminal voltage (static)
Response Time: ≤ 0.1 seconds (field voltage rise time to 95% of final value)
Field Current Control Range: 0 to 120% of rated field current
Voltage Adjustment Range: 90% to 110% of rated terminal voltage
Droop Compensation: 0 to 10% (adjustable)

Input/Output Signals

Analog Inputs:
- Generator terminal voltage: 100 VAC (phase-to-phase)
- Generator stator current: 5 A AC (secondary)
- Field current: 0-5 A AC / 4-20 mA DC
- Speed signal: 0-10 V DC / 4-20 mA DC (proportional to generator speed)
Digital Inputs:
- 8x dry contacts (for control commands: start/stop, manual/automatic mode, etc.)
- Input voltage: 24 VDC / 110 VDC
Analog Outputs:
- 4x 4-20 mA DC (for monitoring: field current, terminal voltage, reactive power, etc.)
- Load capacity: ≤ 500 Ω
Digital Outputs:
- 8x relay contacts (for alarms, status indication, interlocks)
- Contact rating: 250 VAC / 5 A, 30 VDC / 5 A

Protection Features

Field Overcurrent Protection: Adjustable trip level (110%-150% of rated field current) with time delay
Underexcitation Limiter: Prevents operation below minimum reactive power limit
Overexcitation Limiter: Limits field current to avoid overheating of rotor windings
Voltage Surge Protection: Built-in varistors for transient voltage suppression

Communication

Protocols: Modbus RTU (RS485), Profibus DP (optional), Ethernet/IP (optional)
Communication Speed: Up to 19.2 kbps (Modbus RTU); 12 Mbps (Profibus DP)

Mechanical Specifications

Enclosure: IP20 (front panel); IP54 (optional for harsh environments)
Mounting: Panel-mounted (standard); rack-mounted (optional)
Weight: Approximately 5 kg (11 lbs)

UNITROL 1020 ABB pdf

UNITROL 1020

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