Directed Electronics PS-3655E-FM Especificaciones descargar pdf (Pagina 53)

DE3

CIRCUIT BREAKERS

01/15

DE3-53

Ground-Fault Protection Equipment

Add-On Ground-Fault and Earth-Leakage Modules

GFM250

Optional GFM25CT

The Micrologic ground-fault module (GFM) is a CSA certified and UL Listed circuit breaker

accessory which protects equipment from damage caused by ground faults. It is an add-on

module which, when connected to a PowerPact H- or J-frame thermal-magnetic circuit breaker

only, provides ground-fault sensing and ground-fault relay functions.

HD/JD Add-on Ground-fault Module Features:

• Adjustable ground-fault pickup levels

• Adjustable ground-fault time delays

• Integral ground fault push-to-test feature and ground-fault indicator

• All GFMs are supplied for I-Line

mounting, easily convertible to unit mount by removing the I-Line

brackets

• Fault-powered (through the sensing current transformer) for electronics, shunt trip, and integral test

feature.

• Optional neutral current transformer GFM25CT for 3-phase 4-wire applications. Refer to instructions

for proper installation

• Shunt trip S29382 (12 Vdc): is required for circuit breaker. This may be factory-installed (suffix SN)

or field-installed

NOTE: Ground-fault modules cannot be used for alarming only.

Module/Enclosure Selection Chart a

Companion

Circuit Breaker

Prefix

Catalogue Number

Enclosure Space Required

Ground-fault

Pickup Adjustment

Range

I-Line

Switchboard

HD, HG, HJ, HL GFM150HD LA 20–100 A

JD, JG, JJ, JL GFM250JD LA 40–200 A

Accessories

H&J GFM25CT Optional Neutral Current Transformer (required for 4-wire systems)

a At 250 A, the GFM250JD can be used with 80% rated circuit breakers only.

I-Line™ J-Frame with ELM installed

Earth Leakage Module (ELM) for PowerPact H- and J-Frame MCCBs

The Earth Leakage Module (ELM) is an add-on module which, when connected to a

PowerPact H- or J-frame MCCB, provides low-level ground-fault sensing and ground-fault

relay functions.

Because these ELMs are highly sensitive (30 mA to 3 A), they provide much greater

protection than GFMs (20 Amps to 200 Amps sensitivity). The ELMs provide greater

protection of control circuits and other sensitive equipment. The associated circuit breaker

must have a 48 Vdc shunt trip, which may be field-installed (kit S29392) or factory-installed

(suffix –SP) in the H- or J-Frame circuit breaker.

Add-on Earth Leakage Module (ELM) Features:

• Adjustable ground-fault pickup levels as low as 30 mA

• Adjustable ground-fault time delays from instantaneous to 500 msec

(Time delay can be applied to the 30 mA setting)

• Integral ground fault push-to-test feature

• Ground-fault indicator (LED for local status; contacts for remote indication)

• All ELMs are supplied for I-Line™ mounting and are easily convertible to unit-mount by removing the

I-Line brackets

• Three poles; 240 to 600 Vac maximum: 3-wire applications only (no neutral)

• Line-power obtained through internal bus to provide power for electronics, shunt trip, and integral

test feature.

• A shunt trip is required in the circuit breaker; it may be field-installed or factory-installed in the

PowerPact H and J circuit breakers.

• UL 1053 – Ground-fault Sensing and Relaying Equipment

ELM Selection Chartb

Companion Circuit Breakerc Enclosure Space

Required I-Line

Switchboard

Pick-Up Adjustment

Range

Catalog Number

Prefix Size

HD, HG, HJ, HL 15–150 A LA 30 mA–3 A ELM150HD

JD, JG, JJ, JL 150–250 A LA 30 mA–3 A ELM250JD

b At 250 A, the ELM250JD can be used with 80% rated circuit breakers only.

c For Factory Installation of ELM Module: For termination designation (3rd letter of catalog number) use ONLY “M”.

Add

factory installed 48 Vdc shunt trip (suffix SP) to breaker plus suffix VL or VM.

Use VL for H frame.

Use VM for J frame.

Class 931, 940, 960

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