RM4830 6/98 REV A

Page 3

Output Specifications

Rectifier Failure Alarm (RFA)

Problems occurring because of an unacceptable relation-

ship between the output power and load conditions will

cause a Rectifier Failure Alarm (RFA). This alarm consists

of a red LED. Conditions which may lead to an RFA are:

Low Current - Output current has decreased to below

2% of its rated value.

Unit Shutdown - Any shutdown occurrence due to

overvoltage, external shutdown command, unacceptable

ambient temperature conditions or low AC input voltage.

Fan Malfunction - The fan has stopped operating or is

not providing the airflow needed to cool the unit.

Over Temperature - The ambient temperature has

exceeded 50°C.

High Voltage Shutdown (HVSD)

The unit’s built-in high voltage limit is permanently set at

be restarted by a local switch or by a remote signal.

Surge Protection

The unit will withstand lightning and input surges of

6000V/3000A.

Under Voltage Protection

When input voltage is below 106 VAC (with tolerance),

the rectifier’s operation is automatically inhibited.

Output Circuit Protection Device (Fuse)

The unit has one internal output protection fuse which is

PROTECTION, ALARM AND CONTROL SYSTEMS

Parameter

Conditions

Min

Typ

Max

Units

Voltage Adjustment Range

float voltage

40

60

equalize voltage

40

60

Regulation

0-100% load within

specified input voltage and frequency range

±0.5

%

Load Current

within a 10 - 100% rating

± 10

%

Filtering

Voice band

<32

dBrnC

Wide band noise

20 MHz bandwidth

<250

mV p-p

<40

mVrms

ENVIRONMENTAL

Temperature

Operating

0

+50

°C

+32

122

°F

Storage

-50

85

°C

-58

185

°F

Temperature Coefficient

after half hour warm-up

0.01

V/°C

Humidity

non-condensing

0

95

%

Altitude

0

7000

ft.

0

2133

m

Heat Dissipation

@54V

980

Btu/hr

Audible Noise

2 ft. from any vertical surface

<65

dBa