Model 19 3-Phase Monitor with Trip & Restart Delays

19-380-50

The Model 19 3-Phase Monitor (SKU 19-380-50) offers essential protection for industrial equipment operating on 380VAC, 50Hz systems. This unit detects critical conditions including phase loss, low voltage, and phase reversal, ensuring operational integrity. Its adjustable trip delay, ranging from 1 to 30 seconds, allows for precise response timing to transient events, preventing unnecessary shutdowns. Furthermore, the configurable restart delay, from 1 to 300 seconds, facilitates controlled system re-engagement, preventing immediate re-energization after a fault and protecting connected machinery. With automatic reset functionality and compatibility with both Wye and Delta systems, the Model 19 provides reliable, continuous monitoring without requiring a neutral connection. This contributes to consistent system uptime, reduced maintenance requirements, and enhanced equipment longevity in demanding industrial environments. Its robust design ensures dependable performance.

3Ph Adj Trp/Rstrt Dl

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19-380-50

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Specifications

Detection	Phase loss, low voltage, phase reversal
Reset Type	Automatic
Warranty	Five year unconditional
Nominal AC (phase to phase)	380VAC
Adjustment range	300-400VAC
Frequency	50Hz
Power consumption	3.0W
Transient protection	2500VAC for 10ms
Repeat accuracy	± 0.1% of set point (fixed conditions)
Trip delay	1-30 sec.
Restart Delay	1-300 sec.
Dead band	Approximately 2%
Output contacts	SPDT 10 amps at 240VAC resistive
Expected relay life (Mechanical)	10 million operations
Expected relay life (Electrical)	100,000 operations at rated load
Operating temp	-20° to +131° F
Humidity tolerance	0-97% w/o condensation
Enclosure material	NORYL plastic cover; 6/6 Nylon base
Mounting	8-pin socket (**sold separately)
Accessory Socket	Order 8-pin socket number 51X120
System Compatibility	Wye or Delta systems
Neutral Connection	Not required
Indicators	FAULT and NORM condition indicators

FAQs

How does the Model 19 monitor protect against voltage irregularities in a 380VAC system?

The Model 19 detects low voltage conditions and operates within an adjustment range of 300-400VAC for nominal 380VAC systems. It also monitors for phase loss.

What are the configurable timing parameters for fault response and system restart?

The unit features an adjustable trip delay from 1 to 30 seconds, allowing for controlled fault response. It also includes a restart delay adjustable from 1 to 300 seconds for system re-engagement.

Is a neutral connection necessary for the installation of the Model 19 3-Phase Monitor?

No, a neutral connection is not required for the Model 19. It is compatible with both Wye and Delta electrical systems.