Littelfuse PGR-3200 Manuale utente

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PGR-3200 MANUAL

INSULATION MONITOR

REVISION 3-E-040918

Document Number: PM-1025-EN

Printed in Canada

PGR-3200 Insulation Monitor Page i

Rev. 3-E-040918

This page intentionally left blank.

PGR-3200 Insulation Monitor Page ii

Rev. 3-E-040918

TABLE OF CONTENTS

SECTION PAGE

1 General..........................................................................1

2 Operation......................................................................1

2.1 Relay Operating Mode.................................................1

2.2 Front-Panel Controls ....................................................1

2.2.1 Reset..................................................................1

2.2.2 Test ....................................................................1

2.3 Front-Panel Indication ..................................................1

2.3.1 Power.................................................................1

2.3.2 Insulation Warning...........................................1

2.3.3 Active................................................................1

2.3.4 Insulation Alarm...............................................1

2.4 Analog Output...............................................................1

2.5 RemoteReset ................................................................1

2.6 Remote Test...................................................................1

3 Installation....................................................................3

3.1 PGH-5000 and PGH-6000...........................................4

4 Technical Specifications............................................6

4.1 PGR-3200......................................................................6

4.2 PGH High-Tension Couplers......................................7

5 Ordering Information................................................7

6 Performance Test........................................................7

6.1 Insulation Test...............................................................7

Appendix A PGR-3200 Revision History...........................8

LIST OF FIGURES

FIGURE PAGE

1 PGR-3200 Outline and Mounting Details..................2

2 Connection Diagram for Ungrounded Systems

Under 1.3 kV.................................................................3

3 Connection Diagram for Ungrounded

5-kV Systems................................................................3

4 PGH-5000 Outline and Mounting

Details ............................................................................4

5 PGH-6000 Outline and Mounting

Details ............................................................................5

6 PGA-0510 Analog Ohm Meter...................................5

DISCLAIMER

Specifications are subject to change without notice.

Littelfuse, Inc. is not liable for contingent or consequential

damages, or for expenses sustained as a result of incorrect

application, incorrect adjustment, or a malfunction.

PGR-3200 Insulation Monitor Page iii

Rev. 3-E-040918

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PGR-3200 Insulation Monitor Page 1

Rev. 3-E-040918

1. GENERAL

The PGR-3200 Insulation Monitor measures phase-to-

ground resistance to detect electrical-insulation failure in

an ungrounded power utilization system. It provides three

levels of detection with a 50-kwarning with an LED and

output contact indication, a 30-kwarning with LED

indication, and a 10-kalarm with LED and output contact

indication. An analog output is provided for predictive

maintenance trending.

The PGR-3200 can be used to detect faults in

ungrounded systems up to 6 kV. It can be directly

connected to a system up to 1.3 kV, single or three phase,

50 or 60 Hz. A PGH-series high-tension coupler is

required for 5- and 6-kV systems.

2. OPERATION

The PGR-3200 actively monitors insulation resistance

when it is connected to the supply voltage. All conductors

connected to the monitored circuit are included in the

insulation measurement. See Fig. 2.

2.1 RELAY OPERATING MODE

The PGR-3200 output relays operate in the non-fail-safe

mode; they energize when an insulation warning or alarm

occurs.

2.2 FRONT-PANEL CONTROLS

2.2.1 RESET

The front-panel RESET switch is used to reset latching

trips. Cycling the supply voltage will also reset the PGR-

3200. See Section 2.5.

2.2.2 TEST

All LED’s will light and output relays will energize when

the TEST button is pressed for at least 8 s.

2.3 FRONT-PANEL INDICATION

2.3.1 POWER

The green LED’s labelled PWR indicates presence of

supply voltage.

2.3.2 INSULATION WARNING

The red LED’s labelled 50 kand 30 kwill light when

those respective insulation resistance values, or lower are

measured.

2.3.3 ACTIVE

The red LED labelled ACTIVE indicates the monitor is

enabled.

2.3.4 INSULATION ALARM

When insulation resistance measures 10 kor less, the

red LED labelled <10 kwill light.

2.4 ANALOG OUTPUT

A non-isolated, 0- to 1-mA output (terminals 25 and 26)

indicates insulation resistance. The metering output relates

to an insulation-resistance range of 0 to infinity using

optional meter PGA-0510. See Figs. 2, 3, and 6.

2.5 REMOTE RESET

When remote-reset terminals 18 and 19 (alarm) or 21 and

22 (warning) are connected, a warning or alarm remains

latched until theRESET switchis pressed or the remote-reset

terminals are momentarily opened.

If the remote-reset terminals are not connected, the

PGR-3200 operates in non-latching mode; a warning or

alarm will reset when the fault is removed.

2.6 REMOTE TEST

When terminal 29 is connected toground the monitor will

alarm. See Figs. 2 and 3. Response to a test input can take

several seconds.

PGR-3200 Insulation Monitor Page 2

Rev. 3-E-040918

FIGURE 1. PGR-3200 Outline and Mounting Details.

PGR-3200 Insulation Monitor Page 3

Rev. 3-E-040918

3. INSTALLATION

NOTE: Mounting, terminal-block connections, and

wiring must conform to applicable local electrical codes.

Check all applicable codes prior to installation.

The PGR-3200 can be surface or DIN-rail mounted.

See Fig. 1.

Use terminal 6 (L1) as the line terminal and terminal 5

(L2/N) as the neutral terminal. Connect terminal 30 to

ground.

Forsystems up to1.3kV, connect terminal 2 toonephase

on the load side of the starter.

Connect terminals for latching operation, remote reset,

and remote test as required. See Sections 2.5 and 2.6 and

Figs. 2and 3.

Connect an optional PGA-0510 Analog Ohm Meter to

terminals 25 and 26. Meter outline, dimensions, and cutout

size are shown in Fig. 6.

FIGURE 2. Connection Diagram for Ungrounded

Systems Under 1.3 kV.

FIGURE 3. Connection Diagram for Ungrounded

5-kV Systems.

PGR-3200 Insulation Monitor Page 4

Rev. 3-E-040918

FIGURE 4. PGH-5000 Outline and Mounting Details.

3.1 PGH-5000 AND PGH-6000

For 5-kV and 6-kV systems, connect the PGR-3200 to the

monitored circuit with a PGH-5000 and PGH-6000

respectively. See Fig. 4 for PGH-5000 outlineand mounting

details. See Fig. 5 for PGH-6000 outline and mounting

details.

Connect protective-ground terminal ( ) to ground.

Connect terminal E to ground or to PGR-3200 terminal 30,

which must be grounded. Connect terminal M to PGR-

3200 terminal 29. (PGR-3200 terminal 2 is not used.) For

PGR-3200 to PGH-5000/PGH-6000 distances greater than

10 m (30’), use shielded cable, and connect the cable shield

to the second PGH-5000/PGH-6000 terminal E. Connect

terminal A to one phase on the load side of the motor

starter. See Fig. 3. The

PGH-5000/PHG-6000 includes 915 mm (36”) of high-

voltage conductor.

PGR-3200 Insulation Monitor Page 5

Rev. 3-E-040918

FIGURE 5. PGH-6000 Outline and Mounting Details.

FIGURE 6. PGA-0510 Analog Ohm Meter.

PGR-3200 Insulation Monitor Page 6

Rev. 3-E-040918

4. TECHNICAL SPECIFICATIONS

4.1 PGR-3200

Supply

120V option................................5VA,120Vac,24Vac

(+10, -15%)50/60 Hz

240 V option...........................5VA,240Vac,

(+10, -15%)50/60Hz

Maximum System Voltage:

Direct Connection:

UL Rating.........................600 Vac

Maximum .........................1,300 Vac

With PGH-5000.....................5,000 Vac

With PGH-6000.....................6,000 Vac

Measuring Voltage.......................12 Vdc

Measuring Current .......................20 A maximum

DC Resistance...............................600 k

AC impedance at 50-60 Hz.........> 1 M

Frequency Range..........................50 –20,000 Hz

Response-Level Settings .............10, 30, and 50 k(fixed)

Response Delay:

Warning, 10 krelay output:

Insulation Resistance

< 5 k.................................4 s

Insulation Resistance

= 10 k................................5 s

Alarm, 50 krelay output:

Insulation Resistance

< 25 k...............................2.5 s

Insulation Resistance

= 50 k...............................4.5 s

Analog Output:

Mode........................................Self Powered

Range.......................................0 to 1 mA

Impedance...............................6 kmaximum

Parameter................................0 to ∞ Ω Insulation

Resistance

Output Relays; Warning and Alarm:

Configuration..........................N.O. and N.C. (Form C)

Operating Mode .....................Non-Fail-Safe

UL Contact Rating.................5 A, 240 Vac resistive,

0.28 A, 30 Vdc resistive

Switching Capacity................1,200 VA

Supplemental Contact Ratings:

Carry Continuous................5 A, maximum

Trip Mode Latching or Autoreset

Reset ..............................................Front-Panel Button and

Remote N.C. Contacts

Test................................................Front-Panel Button and

Remote N.O. Contact

Terminals......................................Wire Clamping,

22 to 12 AWG

(0.3 to 3.3 mm2)

conductors

Tightening Torque.............0.40 N∙m (3.54 lbf∙in)

Conductor Type...................Copper, Solid or

Stranded with

Ferrules

Conductor Rating................60/75°C

Dimensions:

Height......................................75 mm (3.0”)

Width ......................................100 mm (3.9”)

Depth.......................................113 mm (4.4”)

Including DIN rail..............115 mm (4.5”)

Shipping Weight..........................0.45 kg (1 lb)

Environment:

Operating Temperature.........-10 to 60°C (14 to 140°F)

Storage Temperature.............-40 to 80°C (-40 to 176°F)

Humidity.................................85% Non-Condensing

Enclosure Rating....................lP20

Altitude...................................2,000 m (6,562 ft)

maximum

Overvoltage Category...........II

Pollution Degree....................2

Certification..................................UL Listed

UL508 Industrial Control

Equipment

FCC

RoHS

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