NJB1-X

Relay Protection Relay NJB1-X Relay (Three-Phase Unbalance, Phase Sequence, Phase Failure Protection) 1. General NJB1-X relay (hereinafter called relay) are applied in AC380V~480V control circuits at a frequency of 50Hz/60Hz as protection elements of phase sequence, phase failuire and phase unbalance,making or breaking circuits.The relay with the true effective value of three phase AC voltatage provides more reliable operating protection. The products meet the requirements of standard IEC 60947-5-1. 2. Type designation N JB 1 - □/□ Rated voltage of control power supply Function code: X: Three-Phase Unbalance, Phase Sequence, Phase Failute Protection. Design sequence No. Relay Company code 3. Technical data Type Operating voltage NJB1-X Three-phase, three-line mode: 380, 400, 415, 480VAC Three-phase, four-line mode: 220, 230, 240, 277VAC Three-phase unbalance Operation Unbalance rate: 2%~22% Unbalance Operation time Contact number Contact capacity Indication mode Ambient temperature Installation mode 0.1~30s adjustable 1 Switching 3A 230VAC cosφ=1 Power supply: green LED, delay output: yellow LED, alarm indication: red LED -5℃~+40℃ Equipment type or track type 4. Overall and mounting dimensions (mm) NJB1-X 22.5max 102 max 114max 5. Wiring diagram N L1 L2 L3 Input power supply shares with the rated input voltage L1 L2 N L3 Output 18 16 15 Load I NJB1-X > >> I-02 ...