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KDJB-II single-phase relay protection calibrator
KDJB-II single-phase relay protection calibrator

KDJB-II single-phase relay protection calibrator

Applications:

Used for testing current, voltage, time, intermediate, reclosing, and differential relays in substations, power plants, and electrical maintenance. Suitable for indoor dry, non‑explosive, non‑corrosive environments at −10℃ to 60℃.

  • Response within
    24 hours

  • Free warranty
    12 month

  • On-line training
    Support

Profile:

KDJB‑II integrates AC/DC voltage & current sources, 4½‑digit display, 0.1ms high‑precision timer. It tests pickup, dropout, time, and holding values, supports fixed DC voltage output, and features simple operation and compact structure.

Features:

  • Supports AC 0–100A high‑current output for heavy‑duty relay tests
  • Provides fixed 24V/48V/110V/220V DC voltage output
  • 4½‑digit digital display for clear voltage/current reading
  • 0.1ms high‑resolution millisecond timer for accurate time measurement
  • Multiple contact mode selections for various relay types
  • Synchronous control for rated value impact test

Parameter:

  • AC current: 0–100A/7V, 0–20A/25V, 0–5A/8V
  • AC voltage: 0–250V/4A
  • DC current: 0–20A/25V
  • DC voltage: 0–250V/4A
  • Fixed DC voltage: 24V, 48V, 110V, 220V
  • Display: 4½‑digit high‑precision meter
  • Time range: 0–99.9999s, resolution 0.1ms
  • Time accuracy: ≤0.2ms
  • Working power: AC220V±5%, 50Hz±5%
  • Operating environment: −10℃–60℃, humidity ≤90%RH
  • Protection: Fused, short‑circuit proof, safe wiring design