BZCT-11-A BROYCE | Alldatasheet
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Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England Tel: +44 (0) 1902 773746 Fax: +44 (0) 1902 420639 Email: sales@broycecontrol.com Web: www.broycecontrol.com The Information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user’s own risk. BZCT-11-A 2506 XXXXX HS Code: 85364900 Country of Origin: UK INSTALLATION
- BEFORE INSTALLATION, ISOLATE THE SUPPLY TO THE CABL ES THAT ARE TO BE PASSED THROUGH THE TOROID.
- Installation of the toroid, along with the Earth Leakage Relay must be carried out in accordance with the latest wiring practices and regulations. TECHNICAL SPECIFICATION Size availability* and part number: * internal diameter 35mm ∅∅ ∅∅ (BZCT035) 50mm ∅∅ ∅∅ (BZCT050) 70mm ∅∅ ∅∅ (BZCT070) 160mm ∅∅ ∅∅ (BZCT160) 210mm ∅∅ ∅∅ (BZCT210) 300mm ∅∅ ∅∅ (BZCT300) 120mm ∅∅ ∅∅ (BZCT120) Rated system voltage: 720V AC Insulation level: 3kV AC Current ratio: 1/1000 Rated operational current (I.e.): BZCT035 – 65A (25mm 2) BZCT160 – 320A (400mm 2) BZCT050 – 85A (50mm 2) BZCT210 – 400A (500mm 2) BZCT070 – 160A (95mm 2) BZCT300 – 630A (63 0mm 2) BZCT120 – 250A (240mm 2) Max. cross -section/phase cable size shown in brackets and assumes 3P + N copper cables Max. permissible current: 1kA cont., 5kA for 1.5s, 100kA for 0.05s Minimum ELR trip setting (I∆ n) based on toroid size: 0.006A - 35 and 50mm ∅ 0.03A - 70mm ∅ 0.1A - 120 and 160mm ∅ 0.3A - 210mm ∅ 0.5A - 300mm ∅ Max. Distance 50m (max.) Between toroid and ELR Ambient temperature: -20 to +6 0°C Relative humidity: +95% Housing: 35…210mm 300 mm Grey ABS Tape wrapped Mounting option: 35…210mm 300 mm Surface mount only using fixing slots provided (BZCT160 and 210 require separate mounting feet which are included) Directly on to cables secured in place using cable ties (not supplied) Terminal conductor size: 35…210mm 300mm ≤ 2.5mm 2 solid ≤ 1.5mm 2 stranded Mounting lug (x2) with 6mm hole. Requires suitable crimp (not supplied) Approvals: CE & UKCA Compliant. Conforms to: IEC61869 parts 1 and 2 cUL (when used in conjunction with ELR01PN or ELR30PN) Installation work must be carried out by qualified personnel. For use in conjunction with Broyce “Type A” Earth Leakage Relays Designed to detect leakage current and transmit a p roportional signal to an Earth Leakage Relay Surface mounting with 4 fixing slots (BZCT160 and 210 supplied with separate mounting feet) BZCT300 designed for direct attachment to cables Slim design DIN Rail fixing clip available for 35mm ∅∅ ∅∅ toroid (Part no. BZCT035/CP) CONNECTION DIAGRAM Typical connection examples are shown below. C.T. E N E Supply ELR Aux. Supply ELR Aux. Supply ELR Aux. Supply E E 3-Phase, 4-wire 3-Phase, 3-wire 1-Phase, 2-wire INSTALLATION GUIDANCE Correct installation of the Earth Leakage Relay and toroid should ensure trouble free operation, in pa rticular, if this document is followed. 1. Always ensure the Earth conductor DOES NOT pass thr ough the toroid. If this is unavoidable, the Earth must be routed back through the toroid again and around, as shown in Fig.1. 2. DO NOT pass individual conductors through separate toroid’s as shown in Fig. 3. 3. Ensure the cable is central in the toroid (see Fig. 4). 4. As a rule, select a toroid that has an inside diame ter which is twice that or greater than the outsider diameter of the cable(s) to be passed through (see Fig. 5). 5. Place the toroid on a straight section of cable, no t near a Bend (see Fig. 6). 6. Keep the cable and toroid away from intense magneti c Fields from nearby equipment. Type : BZCT035, 050, 070, 120, 160, 210 & 300 Circular Toroids (Zero Current Transformers) Fig. 3 1 2 3 Fig. 1 E 1 2 N Fig. 2 1 2 N DIN Rail clip fitted to BZCT035 Fig. 4 Fig. 5 ∅ 1 ≥ 2 x ∅ 2 Fig. 6 A ≥ ∅
Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England Tel: +44 (0) 1902 773746 Fax: +44 (0) 1902 420639 Email: sales@broycecontrol.com Web: www.broycecontrol.com The Information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user’s own risk. BZCT-11-A 2506 XXXXX HS Code: 85364900 Country of Origin: UK Type: BZCT035, 050, 070, 120, 160, 210 & 300 Circular Toroids (Zero Current Transformers) DIMENSIONS BZCT035 BZCT050, 070, 120, 160 & 210 BZCT300 (Tape wound) Centres 50 (BZCT035, 050 and 070) 80 (BZCT120) 6.5 F B C D E ∅ A F ∅ A F C E D B ∅ A E ∅ 6 C Toroid Type: A∅∅ ∅∅ B C D E F Weight BZCT035 35 64 74 40 20 32 77g BZCT050 50 63 98 40 20 42 88g BZCT070 70 105 117 40 20 53 135g BZCT120 120 155 170 40 20 80 265g BZCT160 160 150 253 60^ 33 120 1075g BZCT210 210 149 304 60^ 33 145 1300g BZCT300 300 - 370 - 40 - 3800 g Dimensions in mm ^ exc. mounting feet