Sentry-6002 NEMA 4 protection grade battery monitoring system for 120V and 240VDC

Sentry-6002NEMA is a powerful battery monitoring system for substations with vented (flooded) or valve regulated lead acid batteries. It has been re-designed based upon our field proven BM6500 (1996) and BM6800 (2007) models to provide effective remote battery management according to the IEEE updated standards:

IEEE Std. 1188 – 2005: Recommended Practice for Maintenance, Testing, and Replacement of Valve-Regulated Lead- Acid (VRLA) Batteries for Stationary Applications (IEEE Link)

IEEE Std. 450 – 2010: Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications (IEEE Link)

Main Features

• Ultra precise IR (Internal Resistance) measurement for each cell detects dry-out and deterioration/capacity loss long before a problem occurs.
• Discriminate inter-cell and battery to bus connection resistance to identify connection problem without a discharge.
• Ambient and multi-point pilot battery temperature monitoring.
• IP65 (NEMA4) grade protection allows unit(s) to be installed inside the battery room. Compact design allows for easy installation on a rack or wall.
• Automatic discharge capture to database to record planned load test and unplanned power outage.
• No mechanical scanning relays, resulting high reliability.
• Plug & play HMI (optional) allows field service without a computer.
• Industry standard Modbus-RTU and Modbus-TCP communication.
• Full support to SNMP networking battery management system
• Compatible with Battery Analyzer software and MyBattery Platform™ for cloud based remote monitoring.

Specifications

Power Supply
Power Input	Internal DC/DC converter, 90 – 150V input; Maximum Consumption: 10W   250VDC version available
Current/Temperature Measurement
Current Transducer (CT)	Support  LEM current transducer with internal +/-12V power supply   Default CT: HTA 300-S, measurement range +/- 450A, window size D-32mm.Accuracy: 0.1% + sensor accuracy
Temperature Sensing	1 ambient temperature sensor, 2 pilot temperature sensors   Measurement range: -20⁰C to 60⁰C, operating range: 5⁰C to 40⁰C (41⁰F to 104⁰F)Accuracy: 1 ⁰C
Voltage Measurement
Battery	60 x 2V cell per unit, up to 3,000Ah   For 120 x 2V application, 2 units are required for each string. For large UPS 240 x 2V application, 4 units are required for each string.
Bus Voltage	Range: 90 – 160V per unit; Accuracy: 0.1%
Input Range to Each Channel	+/- 3V for 2V batteries
Accuracy	0.1%
Input Wiring	2-wire sampling for each battery, UL 300V 12-conductor 20AWG cable recommended
Internal Resistance and Connection Resistance
Range and Resolution	0 to 3mΩ, 0.005 mΩ resolution
2-wire mode	Internal Resistance and discriminate Connection Resistance.
Communication
Serial Port	Isolated RS-232C and RS-485 interface   MODBUS RTU, 9600-8-1-NoneModbus address 1 to 28, configurable with HMI
Ethernet	Onboard DTU to MyBattery Platform or Battery Analyzer software   Modbus-TCP for integration
Indication and Alarm
LED indication	Dual-color LEDs for status Orange LED for service alarm Red LED for urgent alarm
Alarm Outputs	Service Alarm (Normal Close, 0.1A capacity)Urgent Alarm (Normal Close, 0.1A capacity)
	Dimensions
Unit Dimensions	13.50” (H) x 11.27” (W) x 7.18” (D)   343mm (H) x 286mm (W) x 182mm (D)
Weight	10 lbs per unit (about 4.5kg)

*Specifications subject to change without notice

Sentry-6002NEMA Datasheet (pdf)

Sentry-6002NEMA Connection Schematics (pdf)