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We have used the phase failure relays manufactured by Taylor for the past 30 years. Currently, use both the Taylor PD and PND phase failure relays in our current style switchboards. See the attachments for the wiring diagrams, specifications, operating instructions etc. Released for: Schneider Electric USA.
This modular multi function 3-phase supply control relay is ideal for monitoring of electrical values in industrial and building control panels. It applies to a wide type of industrial automation applications such as hoisting, packaging, lifts, textile, water.
Harmony, 3 phase supply control relay, range 208 to 480 VAC, sequence, phase failure, phase imbalance, voltage. Simplified panel design due to 0.69in width same as 1-pole circuit breaker. Experience unprecedented accuracy, predictive maintenance, and superior security. The product monitors its own power supply.
Maximum switching voltage. 250 V AC 250 V DC. Minimum switching current. 10 mA at 5 V DC. Supply voltage limits. 183...528 V AC. Control circuit voltage limits. 12 % + 10 % Un.
Phase failure detection Time delay type Adjustable 0.1...30 s, +/- 10 % of the full scale value on crossing the threshold Tt ... Schneider Electric declaration of conformity REACh Reference not containing SVHC above the threshold ... 3-Phase Voltage Control Relay Wiring Diagram L1,L2,L3 : Supply to be monitored 11-14,12 : 1st C/O contact of ...
Phase failure relays are often used to control a shunt trip circuit breaker. When this is done, care must be taken to insure that the shunt trip circuit always has an adequate source available. This can be accomplished by using the diagram below. If a phase failure occurs on L2 or L3, the shunt trip coil will draw power from L1 through the control
Function Diagram. Phase Sequence Control and Partial Phase Failure Detection. Legend. Un Nominal 3-phase supply voltage L1, L2, L3 Phases of the supply voltage monitored 11-12, 11-14 Output relay connections Relay status: black color = energized.
