SPECIFICATION OF THE 011195 150°C THREE PHASE RECTIFIER

LAST REVISION AND DATE: REV01. 02/02/2002

01-1-1-9-5 ELECTRICAL SPECIFICATION AT 150°C

• AC input line to line voltage. (Floating Neutral. See note 1). 280V RMS
• AC input phase to neutral voltage. (Floating Neutral. See note 2). 160V RMS
• Peak Output voltage. (See note 3) +400V
• Peak Output current. +2A
• Short circuit protection. None

01-1-1-9-5 MAXIMUM SPECIFICATION AT 150°C(See note 4)

• AC input line to line voltage. (Floating Neutral. See note 1). 350V RMS
• AC input phase to neutral voltage. (Floating Neutral. See note 1). 200V RMS
• Peak Output voltage. (See note 3) +500V
• Peak Output current. +3A
• Short circuit protection. None

MECHANICAL DIMENSIONS

Mechanical dimensions and tolerance are detailed in drawing 01-1-1-9-5.

PIN OUT

Inputs and outputs are described by drawing 01-1-1-9-5.

ENCAPSULATION

All rectifier modules are encapsulated to improve the mechanical strength of the case and to protect the rectifier module from the drilling environment.

TEMPERATURE

The operating temperature range shall be -21°C<TEMP<151°C. The maximum rate of change of temperature shall not exceed 5°C per minute. Survival temperature shall be 175°C, not operating.

OPERATING ENVIRONMENT

The rectifier module will continue to meet this specification for three hundred and fifty hours at 150°C and 400V DC. Minimum life expectancy within a 150°C Oil field environment shall exceed three hundred and fifty hours.

QUALIFYING VIBRATION TEST

Either powered or unpowered, the rectifier module shall survive the following qualifying sine vibration test at ambient temperatures. 20g rms for four hours per axis, swept sine from 10Hz to 2KHz. Three tests in all for a total of twelve hours.

Alternatively, the unit shall survive a random vibration test of 20g rms for four hours per axis at 0.2g² per Hz from 10Hz to 2KHz. Three tests in all for a total of twelve hours at ambient temperatures.

SCREENING VIBRATION TEST

Either powered or unpowered, the rectifier module shall survive the following screening sine vibration test at ambient temperatures. 10g rms for four hours per axis, swept sine from 10Hz to 2KHz. Three tests in all for a total of twelve hours.

Alternatively, the unit shall survive a random vibration test of 10g rms for four hours per axis at 0.05g² per Hz from 10Hz to 2KHz. Three tests in all for a total of twelve hours at ambient temperatures.

QUALIFYING SHOCK TEST

The rectifier module shall survive three shocks per axis. Each shock shall be 1000g, 0.5ms half sine wave. Nine shocks in total.

SCREENING SHOCK TEST

The rectifier module shall survive one shock per axis. Each shock shall be 1000g, 0.5ms half sine wave. Three shocks in total.

SHOCK AND VIBRATION LIFE EXPECTANCY

Screening levels of shock and vibration will not cause rectifier module failure within three hundred and fifty hours service life.

HUMIDITY

Because the input and output pins are exposed, it is the customer's responsibility to ensure these terminations are properly sealed against moisture after manufacture into their equipment.

THERMAL SHUTDOWN

Rectifier modules do not possess a thermal shutdown capability.

NOTES

1. These modules are three phase, full wave rectifiers which assume connection to a three wire star wound three phase alternator. The star point or neutral point of the alternator is assumed to float. This means that the peak line to line voltage must not exceed the maximum specification, otherwise the rectifier will suffer catastrophic damage.
2. This is another way to express the limits of the rectifier module in terms of phase voltage, where Phase voltage = Line to Line Voltage3.
3. Peak rectified output voltage is the no load, line to line output of the alternator, equivalent to 2*Line to Line Voltage or 2*3*Phase Voltage.
4. To avoid premature failure of the rectifier module, it is the customer's responsibility to ensure these maxima are not exceeded for more than five minutes at 150°C.

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