Bender LifeGuard® LG2-Series Protection Panels

Bender LifeGuard ®  LG2-Series Protection Panels

LifeGuard® Protection Panels

This document is intended as a reference guide for installing and using a Bender LifeGuard® LG2-series protection panel. This document includes installation, setup, and usage instructions.

Only qualified maintenance personnel shall operate or service this equipment. These instructions should not be viewed as sufficient for those who are not otherwise qualified to operate or service this equipment. This document is intended to provide accurate information only. No responsibility is assumed by Bender for any consequences arising from use of this document.

Use of this document

This quick start applies to standard LifeGuard models with lighted push button front panels, as pictured above, as well as open panels with no enclosure.

Standard model

Installation

Mounting - NEMA 4X Polycarbonate Enclosure (enclosure code P)

The standard enclosure for LifeGuard protection panels is NEMA 4X polycarbonate. The enclosure includes mounting feet and separate instructions on wall-mounting the enclosure. Refer to these instructions for more information. Refer to the figure and table below for dimensions.

| Models | Nominal | A x B | C | D | F | | <100 A | $12^{prime prime} ×10^{prime prime} ×6^{prime prime}| 11.41" x 13.41" | 7.63" | 14.03" | 10.25" | | 305 x 254 x 152 mm | 290 x 340 mm | 194 mm | 357 mm | 260 mm | | 100 A | $16^{prime prime} ×14^{prime prime} ×8^{prime prime}| 15.41" x 17.65" | 11.63" | 18.03" | 14.25" | | 406 x 356 x 203 mm | 391 x 448 mm | 296 mm | 458 mm | 362 mm |

| Models | F | G | H | I | K | L | | <100 A | 12.68" | 7.38" | 7.87" | 10.81" | 14.88" | 12.81" | | 322 mm | 187 mm | 200 mm | 275 mm | 378 mm | 325 mm | | 100 A | 16.68" | 9.40" | 9.98" | 14.79" | 18.88" | 16.79" | | 424 mm | 239 mm | 253 mm | 376 mm | 480 mm | 426 mm |

NEMA 4X Stainless Steel Enclosure (enclosure code S Option)

LifeGuard protection panels are available with a NEMA 4X stainless steel enclosure. The enclosure includes separate instructions for wall-mounting the enclosure. Refer to those instructions for more information. Dimensions below are in inches (mm.

| Type | Enclosure | A x B x C | D x E | G x H | | Standard | 16x12x6 | 1 6 “ x 12“ x 6“ | 14.2“ x 10.2“ | 14.5“ x 10.5“ | | ( 406 x 305 x 152) | (361 x 259) | (368 x 267) |

If the LifeGuard was purchased without an enclosure (backplate only), consult the following section “Wiring,” and the section “Backplate Only Models”.

| Voltage | Conductors ( not including ground) | Referenced Wiring Diagram | | 120 VAC | 1ph / 2w (L1, N) | Figure W1 | | 208 VAC | 3ph / 3w (L1, L2, L3) | Figure W2 | | 208/120 VAC | 3ph / 4w (L1, L2, L3, N) | Figure W3 | | 240/120 VAC | 1ph / 3w (L1, L2, N) | Figure W4 | | 480 VAC | 3ph / 3w (L1, L2, L3) | Figure W2 | | 480/277 VAC | 3ph / 4w (L1, L2, L3, N) | Figure W3 | | 600 VAC | 3ph / 3w (L1, L2, L3) | Figure W2 | | 600/347 VAC | 3ph / 4w (L1, L2, L3, N) | Figure W3 |

Additional requirements - Backplate-Only Models (enclosure type N)

This section applies to LifeGuard models purchased without an enclosure and on a backplate only. Refer to instructions below for additional requirements for installation and wiring. Backplate-only models must be installed in a suitable enclosure.

Mounting - Backplate Only

Refer to the figure below for dimensions. The unit must be mounted in a location sufficient to protect live electrical equipment. Use four #10 screws for mounting. It should be placed X inches away from other equipment. This vertical clearance X (minimum depth of enclosure, measured from the installed backplate) of the backplate is:

• 6” (152 mm) for models less than 100 A

• 8” (203 mm) for 100 A models.

The mounting hole diameter is 1/4“ (6.4 mm).

| Type | A x B | C x D | | < 100 A | 8. 2 5“ x 10. 2 5 (2 10 x 2 60 ) | 8. 88 “ x 10. 88 “ (2 25 x 2 76 ) | | 100 A | 12. 2 5“ x 14. 2 5“ (3 11 x 3 62 ) | 12. 88 “ x 14. 88 “ (3 27 x 3 78 ) |

green:tripped / RESET button: Resets the panel if faults have been cleared (momentary push). red:TRIPPED LED / TEST button: Illuminates when tripped / TEST button: Performs a functional test (hold for at least 2 seconds).

Apply Power

To apply power, close the customer-supplied circuit breaker / disconnect on the line side of the LifeGuard panel. If there are no ground faults present on the system, the green POWER ON LED will light.

Perform Test (Trip Level Option F)

To perform a test on fixed 6-mA models with trip level option F:

• Push TEST for at least two seconds.

• The unit will trip, the green POWER ON LED will go out, and the red CIRCUIT TRIPPED LED will illuminate. Power to connected loads will be interrupted.

• An internal self-test will initiate, taking approximately ten seconds.

• Push RESET for at least one second.

• If the internal self-test has completed, the unit will reset, the red CIRCUIT TRIPPED LED will go out, and the green POWER ON LED will illuminate. Power will be restored to the load.

Perform Test (Trip Level Option A)

To perform a test on field-adjustable models with trip level option A:

• Push TEST for at least two seconds.

• The unit will trip, the green POWER ON LED will go out, and the red CIRCUIT TRIPPED LED will illuminate. Power to connected loads will be interrupted.

• Push RESET for at least one second.

• The unit will reset, the red CIRCUIT TRIPPED LED will go out, and the green POWER ON LED will illuminate. Power will be restored to the load.

Field Adjustment, Error Codes and troubleshooting

Models with trip level option A have field adjustable ground-fault-current trip level and trip time. The factory defaults are 30 mA and 0 s. These models have a CTUB101-CTBC35P current sensor, which has a three-position potentiometer that must be set to the correct position depending on the RCMA420-D-2 ground-fault-current trip setting. For trip settings up to 100 mA, the potentiometer must be rotated to the left position (pointing to 8 o’clock) and for setting above 100 mA the potentiometer must be rotated to the vertical position (12 o’clock).

| Response value RCM... | Measuring range rms | Measuring range peak | | I_{4 n} ≤0.1 ~A$ | 0...450 mA | 0...900 mA | | 0.1 ~A<I_{An } ≤0.5 ~A$ | 0...0.75A | 0...3.5A |

For details about protection relay settings, error codes, and troubleshooting, please refer to the respective protection relay technical manuals, available online.