ADJUSTABLE PHASE FAILURE & SEQUENCE RELAY 400VAC

Specifications

• DESCRIPTION: Phase failure / sequence relay (with adjustment for NPS)
• CONTACT: 10A SPDT
• FUNCTION: Phase failure
• RATED VOLTAGE: 250V
• MECHANICAL LIFE: 10x106 cycles
• PROTECTION INDEX IP: IP 20
• OPERATING TEMPERATURE: -10 to + 50°C
• STORAGE TEMPERATURE: -50 to + 85°C
• DIMENSIONS (MM): (H) 92 x (W) 36 x (D) 64

Phase Failure / Phase Sequence Monitor

• The Electro 11 pin plug-in range of control and timing devices are to be installed into a standard 11 pin base making installation easy and convenient.
• The SF1 Monitors negative phase sequence (NPS) voltage to detect phase failure, phase reversal and phase imbalance.
• The NPS voltage of the unit is fixed at 7%.
• When any of these faults occur the unit will de-energize.
• The relay will only re-energize if the supply voltage corrects itself.
• The unit will not react to a balanced voltage variation.

Features:

• Relay ON LED
• Output 10A SPDT
• Detection of phase asymmetry
• Insensitive to regenerated EMF
• Fast response to reverse phase sequence
• Monitoring relay for 3-phase voltage control
• Measures if all 3 phases present and in sequence
• Insusceptible to balanced supply voltage variation