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GMX Series

Global Market Standby Power Supply

Data sheet

Downloads

Source of supply

Alpha’s GMX Series is a cost effective standby power supply designed for the cable industry. The GMX is an ideal solution for cable operators who need a quality, reliable basic uninterruptible power supply. Features of the GMX include slot for status monitoring card, smart display, terminal block output connections, output taps for 63 and 87V, external battery temperature probe, built-in chassis handle and removable MOV’s.

Line Interactive Ferro Technology (LIFT)
Wide input voltage range of ±30%
Compact packaging with light weight ferro
Field programmable flash memory
Built-in battery circuit breaker
IEC style line cord

Variants

Technical data

Specifications

Model:	GMX 915	GMX 915P	GMX 915E
Electrical
Input Voltage:	115Vrms	225Vrms	225Vrms
Input Tolerance:	Operating: ±30% (80 to 150Vrms) Line Return: ±25%	Operating: ±30% (158 to 292Vrms) Line Return: ±25%	Operating: ±30% (158 to 292Vrms) Line Return: ±25%
Nominal Input Current1:	13A	7A	7A
Input Frequency (without going to standby):	60Hz, ±3Hz	60Hz, ±3Hz	50Hz, ±3Hz
DC Voltage:	36VDC	36VDC	36VDC
Low DC Voltage Cutout:	1.75V/Cell	1.75V/Cell	1.75V/Cell
Output Voltage:	63/87Vrms (Field Selectable)	63/87Vrms (Field Selectable)	63/87Vrms (Field Selectable)
Output Regulation, 87V Tap2:	±3%	±3%	±3%
Output Regulation, 63V Tap2:	±4%	±4%	±4%
Rated Output Current:	15A rms	15A rms	15A rms
Output Configuration:	Single	Single	Single
Output Frequency:	60Hz, ±1Hz (Inverter Operation)	60Hz, ±1Hz (Inverter Operation)	50Hz, ±1Hz (Inverter Operation)Quasi Square wave
Waveform:	Quasi Square wave	Quasi Square wave
Slew Rate:	<200 V/ms,<100 V/ms typical	<200 V/ms,<100 V/ms typical	<200 V/ms,<100 V/ms typical
Crest Factor Ratio (Peak: RMS):	1.3:1 typical	1.3:1 typical	1.3:1 typical
Efficiency @ 87Vrms
@100% Load:	91% typical at nominal input	91% typical at nominal input	91% typical at nominal input
@75% Load:	90% typical at nominal input	90% typical at nominal input	90% typical at nominal input
@50% Load:	88% typical at nominal input	88% typical at nominal input	88% typical at nominal input
@25% Load:	80% typical at nominal input	80% typical at nominal input	80% typical at nominal input
On Inverter (40 to 100% load):	84% typical	84% typical	84% typical
Overload Protection
Fold back (Typical @ Nominal Input)
87V Tap:	24A rms	24A rms	24A rms
60V Tap:	33A rms	33A rms	33A rms
Output Current Into Short (@ Nominal Input)
87V Tap:	<22.5A rms	<22.5A rms	<22.5A rms
60V Tap:	29A rms typical	29A rms typical	29A rms typical
Overload Current Operation
0% to 110% Load:	Continuous Operation	Continuous Operation	Continuous Operation
115 to 125% Load:	Shut Down approx. 30min	Shut Down approx. 30min	Shut Down approx. 30min
125 to 150% Load:	Shut Down approx. 10min	Shut Down approx. 10min	Shut Down approx. 10min
>150% Load:	Shut Down <10sec	Shut Down <10sec	Shut Down <10sec
Battery Charging
Charge Current:	10A4	10A4	10A4
Temperature Compensation:	-5mV/Cell/°C (Programmable)	-5mV/Cell/°C (Programmable)	-5mV/Cell/°C (Programmable)
Constant Current Operation:	High Rate Charge to 90% Capacity	High Rate Charge to 90% Capacity	High Rate Charge to 90% Capacity
Constant Voltage Operation:	2.40V/Cell (Typ. 7hrs)	2.40V/Cell (Typ. 7hrs)	2.40V/Cell (Typ. 7hrs)
Environmental
Operating Range:	–40 to 55°C at Front Air Inlet of Power Supply	–40 to 55°C at Front Air Inlet of Power Supply	–40 to 55°C at Front Air Inlet of Power Supply
Humidity:	0 to 95% non-condensing	0 to 95% non-condensing	0 to 95% non-condensing
Altitude:	0 to 10000ft (3000m) above sea level	0 to 10000ft (3000m) above sea level	0 to 10000ft (3000m) above sea level
Mechanical
Height (in): (mm):	7.8 198	7.8 198	7.8 198
Width (in): (mm):	18.3 465	18.3 465	18.3 465
Depth (in): (mm):	11.4 290	11.4 290	11.4 290
Weight (lb): (kg):	60 27.5	60 27.5	67 30.5
Front Panel Display (LCD):	2 x 20 Character LCD	2 x 20 Character LCD	2 x 20 Character LCD
Front Panel Indicators (LED):	Output Status & Alarm	Output Status & Alarm	Output Status & Alarm
Finish:	Black Powder Coat	Black Powder Coat	Black Powder Coat
Communication
Status Monitoring3:	Optional	Optional	Optional
Agency
Safety Recognition:	UL 1778/CSA C22.2, No. 107.1	UL 1778/CSA C22.2, No. 107.1 CB scheme CE and KTL	EN 50091-1-2, IEC 60950 CCC,
Emissions:	CISPR 22, Class A	CISPR 22, Class A	EN 50091-2, (CE Class A)

Notes:
1 Batteries fully charged
2 Output regulation at nominal input frequency. Frequency variations will proportionally affect the output voltage (i.e., a 1% reduction in frequency will result in approximately a 1% drop in output voltage)
3 Status monitoring and embedded transponders are optional.
4 Varies with input line voltage and output load