I. Basic Information
Brand: Basler Electric (USA)
Model: DECS-100-B1 (often abbreviated as DECS100-B01)
Category: Microprocessor digital brushless synchronous generator excitation voltage regulation device
Applicable units: Land-based / marine diesel / gas synchronous generators of 5MW and below
Positioning: Single-unit voltage stabilization, multi-unit parallel reactive power regulation, grid-connected voltage regulation integrated AVR
Interpretation of Model Suffix B1 DECS-100-B1
Series B: Supports VAR / power factor PF control, with CT current sampling for parallel reactive power division; lacks bus voltage matching function
1: CT secondary rated current 1A (distinguishing B11 = 5A CT version)
Compared with the same series:
A1: No parallel reactive power control, only single-machine AVR voltage stabilization
B1: 1A CT, supports parallel reactive power / constant power factor
B11: 5A CT, parallel reactive power control (the most common model on the market)
Core Electrical Specifications
1. Power Supply (device working power)
Input: 88~250V AC single phase / three phase, 50~400Hz, power consumption 650VA
Starting residual voltage threshold: ≥ 6V AC can build voltage
2. Voltage Sampling (generator PT signal)
Supports single / three-phase collection: 100/120/240/480/600V AC, per phase load < 1VA
Steady-state voltage regulation accuracy: ±0.25%, load sudden change response < 1 power frequency cycle
3. CT Current Sampling (B1 dedicated 1A secondary)
CT1/CT2 terminal input 1A AC, used for reactive power sag, constant VAR/PF control, load < 1VA
4. Excitation Power Output (PWM chopping)
Continuous rated: 63V DC / 7A DC
10s strong excitation peak value: input 200VAC when output 135V DC/15A DC
Minimum excitation winding resistance ≥ 9Ω
5. Auxiliary Interfaces
Remote setpoint: ±3V DC analog input, ±30% voltage fine-tuning
Switching signals: 5 channels passive inputs (rise / fall voltage, switching, etc.)
Alarm relay: 1 channel Form A normally open, 7A AC/DC continuous load
Communication: DB9 RS232 serial port, equipped with BESTCOMS PC debugging software
Core Functions
Basic AVR voltage stabilization mode
Soft excitation, voltage slope rise, voltage/hertz limit (low-frequency voltage reduction), suppression of no-load/mid-load voltage fluctuations
Parallel grid connection dedicated (unique to Series B)
Reactive power sag compensation, multi-machine reactive power equalization, constant reactive power VAR, constant power factor PF dual mode; can operate grid-connected mains power
Complete excitation protection
Over-excitation limit OEL, under-excitation limit UEL, machine terminal overvoltage, sampling loss protection, excitation overcurrent suppression
Diagnosis and recording
Built-in operation parameter collection, fault event storage, computer software can export waveforms, setting parameters
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