9780 FSK Powerline Carrier

  • RFL® 9780 - FSK
  • RFL® 9780 - FSK
  • RFL® 9780 - FSK
RFL® 9780 - FSK

Product Description

RFL® 9780 FSK Powerline Carrier

The RFL® 9780 is a Programmable Frequency-Shift Keyed (FSK) power line carrier system, which can be supplied as a transceiver (Tx/Rx), transmit-only (Tx), receive-only (Rx), dual transmitter (Tx/Tx), or dual receiver (Rx/Rx). All versions are available with redundant power supplies. These features include improved RFI and Surge Withstand Capabilities (meeting the requirements of ANSI/IEEE C93.5), ESD protection (per IEEE PC 37.90.3, draft A, 1/8/99) and increased flexibility through field-programmable frequencies and logic, reflected power measurement option, and no cost WindowsTM web based user interface.

Typical applications for the 9780 include Direct Transfer Trip (DTT-single or dual channel), Permissive Transfer Trip (PTT), Directional Comparison Unblocking (DCU), and dual phase comparison. For protective relaying applications, the universal I/O capabilities of the RFL® 9780 allow its use with all protective relay designs currently in use, as well as many vintage relays. Often a 9780 can be configured as a direct drop-in replacement for an older PLC set.

Power Supplies

  • Choice of 48V/125Vdc or 250 Vdc Power Supplies.
  • Chassis may be equipped with single or redundant supplies.

Event Storage

  • System status points are checked every millisecond; changes in system status (events) are recorded in the log with time and date stamps. The events are stored in non-volatile memory and are recalled most recent event first. The forty most recent events are retained. The local clock is automatically synchronized to an externally supplied IRIG-B signal if available.

Integrated Reflected Power Meter

  • Weather and temperature changes affect the characteristic impedance of the line and might warrant readjustment of the line tuner. The RFL Reflected Power Meter can be read-off remotely and makes it easy to check received signal level and reflected power during adverse weather conditions without the need to traveling to the substation. This feature eliminates the need for reflected power meter test equipment and enables the optimization of carrier performance and line tuning.

Carrier Level Indicator

  • All RFL 9780 transceivers are equipped with carrier level indicators, a transmitter output power alarm, and a low receiver input alarm as standard equipment. Skewed or transformer hybrid modules are also available for use with the RFL 9780 and fit within the same chassis.

External Amplifiers

  • External 50 and 100W RF Power Amplifiers can be used to boost the output power if required

Multiple Configurations

  • Every 9780 can be supplied as a Tx/Rx, Tx/Tx, Rx/Rx, Tx only, and Rx only in an single three rack unit chassis

Improved Noise rejection

  • Programmable RF receiver input filter provides improved noise rejection.

Remote Interrogation

  • RS-232 port for remote interrogation of optional SOE Log and reflected power meter.

Warranty

  • RFL's standard warranty for the RFL 9780 is twelve months from date of shipment for replacement or repair of any part which fails during normal operation or service.

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General

The standard Tx/Rx system is packaged in a single 3U high chassis and includes full-feature transmitter and receiver sections. The unit may optionally be equipped with a hybrid, SOE module, and redundant supply in the same chassis. External amplifiers can be used to boost the output power if required.

Dimensions

  • 19" x 5.25" x 15.25"

Supply Voltage

  • 48/125 Vdc (38 to 150 Vdc 85 W)
  • 250 Vdc (200 to 300 Vdc 85 W)

Approximate Weight

  • 18 lbs

Operating Temperature

  • -20°C to 60°C

Humidity

  • 0 to 95% non-condensing

Dielectric and surge withstand:

  • Per ANSI C93.5

ESD protection

  • Per IEEE PC37.90.3, Draft A, 1-8-99

Transmitter

The transmitter is a fully programmable three-frequency Direct Digital Synthesis (DDS) generator followed by a 10 W power amplifier and filter. The unit may be configured for 1W/ 1W, 1W/10W, 3W/10W, or 10W/10W operation (for a two frequency system, three-frequency systems have additional modes).

Number of Frequencies Preset:

  • 3

Frequency Step Size

  • 10 Hz

Frequency setting method:

  • Direct reading rotary switches

Rated output power:

  • 10 Watts

Digital Communications

  • 50 Ohms (with load-matching adjustment)

Receiver

The receive circuit consists of an input normalizer, programmable frequency detector, and carrier level indicator.

Receiver sensitivity:

  • 5 mVrms

I/O Options

  • >25 Vrms
Table 3

Carrier Level Indicator

Carrier Level Indicator:

  • Display: Front panel 3-½ digit direct reading (in dB)
  • Range: ±10 dB

External Meter Output:

  • 0 to 100 μAmp ±1 Volt, jumper selectable.

Receiver Logic Functions

  • The FSK's received signals are sent into a user configurable logic module which processes the information. Each of the individual timers and signal qualifiers may be independently disabled or set to a desired value (in mSec) see Table 1.
Table 1

Optional Sequence of Events

  • The forty most recent events are retained. The local clock is automatically synchronized to an externally supplied IRIG-B signal if available.

IRIG-B input:

  • 1000 Hz modulated or direct TTL

Output Ratings

[2] Solid State Outputs – 1 Guard, 1 Trip

  • Maximum continuous current: 1 Amp
  • Maximum 1 minute current: 2 Amps
  • Maximum 100 mSec current: 10 Amps
  • Maximum open circuit voltage: 280 Volts

[2] Form C Relay Outputs – 1 Guard, 1 Trip

  • Maximum continuous current: 5 Amps
  • Maximum 200 mSec current: 30 Amps
  • Maximum open circuit voltage: 280 Volts

[5] Form C Alarm Relay Outputs - Tx Sent, PS Fail, Tx Fail, Low Level, Logic Fail

  • Maximum continuous current: 1 Amp
  • Maximum breaking current (125 Vdc): 1 Amp, non-inductive
  • Maximum breaking current (280 Vdc): 0.25 Amp, non-inductive
  • Maximum open circuit voltage: 280 Volts

Note: Logic level (5 volt nominal) outputs are available.

RF Outputs

  • Maximum continuous output power: 10 Watts
  • Nominal output impedance: 50 Ohms (w/ matching adjustment)

Input Ratings

  • [2] Trip Key Inputs 1 & 2

48 Volt Inputs

  • Will not operate at or below: 28 Volts
  • Will operate at or above: 35 Volts
  • Minimum pulse duration: 100 μSec
  • Input current: <10mA, 5mA typical

125 Volt Inputs

  • Will not operate at or below: 70 Volts
  • Will operate at or above: 90 Volts
  • Minimum pulse duration: 100 μSec
  • Input current: <10mA, 5mA typical

250 Volt Inputs

  • Will not operate at or below: 140 Volts
  • Will operate at or above: 175 Volts
  • Minimum pulse duration: 100 μSec
  • Input current: <10mA, 5mA typical

Note: Logic level (5 volt nominal) outputs are available.

RF Input

  • Input impedance (termination enabled): 50 or 75 Ohms, selectable
  • Maximum continuous termination power dissipation: 1 W Input impedance (termination disabled): >30 K-Ohms

Input Protection

  • >50 Vrms continuous without damage to receiver (excluding termination resistors).

Input Surge

  • 3KV per C93.5

Available Files

Files Available in the Customer Area

Please visit Operating Manuals or Product/Software Downloads to download relevant files. Requires RFL Customer Account.

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