7796HC

Precision, DC-enabled Linear Amplifier with up to 200 Ap Current

7796HC

Up to 200 Ap Inrush Current, DC to 100+ kHz, Three-Phase

Stable when driving a wide range of resistive, inductive or capacitive loads
Field-selectable controlled-voltage or controlled-current operation
Can be switched between rail supply modes to optimize for various load impedances
Protection circuits guard against over/under voltage, over current, over temperature, and circulating ground currents

Key Performance Capabilities:

Up to 85A continuous at 13.5V DC; 70A at 28V DC
Up to 200A in-rush current capability
Stable when driving highly capacitive loads
±80V DC capable
>35 V/µs slew rate
Four-quadrant operation (source and sink)
208 VAC version ONLY; 400 VAC version not available

SKU: N/A Category: Amplifiers

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OVERVIEW

The 7796HC power amplifier offers up to 85 Ap continuous at 13.5 VDC, DC – 250 kHz small-signal bandwidth, and controlled-current or controlled-voltage modes of operation. The 7796HC can be used to simulate ripple noise, drop outs, surges and ground shift noise as required by a variety of standards for DC-powered electronics in the aviation and automotive industries.

A single 7796HC makes a very good choice for 13.5V DC-based power susceptibility test standards for high-current-draw EUTs (up to 85A).With configurations capable of up to 600Ap and the ability to both source and sink, the 7796HC is your best solution for high-current DC Conducted Immunity testing.

OUTPUT CHART

AC Output

Note: Testing performed at 208V AC into resistive loads as specified. 7796HC accuracy was measured when driven into a 10-ohm load with between 0.1V DC and 6V DC or between 0.2V AC and 5V AC presented at its inputs. Performance reported is typical into the specified load up to 20 kHz frequency levels. Performance may be affected when operating into highly reactive loads or above 20 kHz, reducing maximum voltage, current and power output. 7796HC amplifiers can operate from 208V AC ±10%. Since these amplifiers have an unregulated power supply, low line conditions may slightly affect the maximum voltage potential.

	PEAK OUTPUT						RMS OUTPUT
	40mSec Pulse, 30% Duty Cycle		5 Min, 100% Duty Cycle		1 Hr, 100% Duty Cycle		5 Min, 100% Duty Cycle		1 Hr, 100% Duty Cycle
Ohms	Volts	Amps	Volts	Amps	Volts	Amps	Volts	Amps	Volts	Amps	Watts
2	79	39	79	39	79	39	56	28	56	28	1540
1	56	56	55	55	55	55	39	39	39	39	1512
0.5	53	106	52	104	50	100	37	74	35	71	2499
0.25	40	157	38	152	35	139	27	107	25	98	2432

DC Output

Note: Testing performed in high-current mode.

	OUTPUT (Amperes)
Volts DC	1 Hr, 100% Duty Cycle
13.5	90
24	90
48	80

PERFORMANCE

SPECIFICATIONS

Performance

Note: Testing performed at 208V AC into resistive loads as specified. 7796HC accuracy was measured when driven into a 10 ohm load with between 0.1V DC and 6V DC or between 0.2V AC and 5V AC presented at its inputs. Performance reported is typical into the specified load up to 20 kHz frequency levels. Performance may be affected when operating into highly reactive loads or above 20 kHz, reducing maximum voltage, current and power output. 7794HC amplifiers can operate from 208V AC ±10%. Since these amplifiers have an unregulated power supply, low line conditions may slightly affect the maximum voltage potential.

Frequency Response, DC – 30 kHz (1 watt into 8 ohms): +0.1 to -0.5 dB
Maximum Continuous Output Power: 2550 watts RMS
Slew Rate: >35 V/µs
Residual Noise, 10 Hz to 20 kHz: Less than 250 µV (<0.25 mV)
THD (DC – 20 kHz): Less than 0.25%
Output Offset: Less than ±200 µV
Output Offset Current: Less than 10 mA DC
DC Drift,
- From Cold to Maximum Operating Temperature: ±400µV
- After 20 minutes of Operation: ±200µV
Output Impedance: 3.2 mOhm in Series with 2.2 µH
Phase Response (10 Hz – 10 kHz) : ±8.3 degrees
Unit to Unit Phase Error: ±0.1 degrees at 60 Hz

Input Characteristics

Balanced with ground: Three-terminal barrier block connector, 20 kΩ differential
Unbalanced: BNC connector, 10 kΩ single-ended
Gain, Voltage Mode: 20 volts/volt; Current Mode: 20 amperes/volt
Gain Linearity (over input signal, from 0.2V to 5V),
- DC: 0.0125%
- AC: 0.030%
Max Input Voltage: ±10V, balanced or unbalanced
Input Impedance: 20 kΩ differential
Input Sensitivity: 3.0V input for 3800W output into 1 ohm (adjustable)
Common Mode Rejection Range: -±11 VDC maximum
Common Mode Rejection Ratio: Better than 70 dB

Status Display, Control, I/O

Front Panel LED Displays indicate: Ready, Standby, Fault
Soft Touch Switches for: Run, Stop, Reset
LCD Display: Can be configured for up to four simultanteous displays report one, two, or all four of the following: Vp, VRMS, Ap, ARMS
Back Panel Power Connection: NEMA-style locking receptacle; matching AC connector also included
Signal Output:4-position terminal barrier block (OUTPUT / COMMON / SAMPLED COMMON / CHASSIS GROUND); resistor installed between SAMPLED COMMON AND CHASSIS GROUND is a 2.7-ohm, 2W, 5%, metal-oxide resistor
Signal Input: User Selectable BNC or Barrier Strip, Balanced or Unbalanced
Interlock Connector: 25-pin D-sub connector used for amplifier control and status applications; also used in multi-amplifier applications

Communication Capabilities

Current Monitor: 20A/V ± 1%; 10A/V ± 1% (differential configuration)
Reporting: System Fault, Over Temp, Over Voltage, Over Load
Remote Control via Interlock Connector: Force to Standby, Reset after a fault

Protection

Over/Under Voltage: ± 10% from specified supply voltage amplifier is forced to Standby
Over Current: Breaker protection on both main power and low voltage supplies
Over Temperature: Separate output transistor, heat sink, and transformer temperature monitoring and protection

Physical Characteristics

Chassis: The amplifier is designed for stand- alone or rack-mounted operation. The chassis is aluminum with a black powder-coat finish. The unit occupies five EIA 19-inch-wide units.
Weight: 153 lbs (69 kg), Shipping 168 lbs (76.2 kg)
AC Power: Three-phase, 208 VAC (±10%), 47-60 Hz, 30A AC service; (400 VAC (±10%), 15A model available)
Operating Temperature: 10°C to 50°C (50°F to 122°F), maximum output Power de-rated above 30°C (86°F).
Humidity: 70% or less, non-condensing
Cooling: Forced air cooling from front to back through removable filters via six 100ft3/min. fans. No space is required between rack-mounted amplifiers. Air filters are removeable from the rear via one fastener per side and may be eliminated if cabinet filtration is provided.
Dimensions (HxWxD): 12.25” x 19” x 22.8” (31.3 cm x 48.3 cm x 57.9 cm)