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Installation, commissioning and operating instructions for valve-regulated stationary lead-acid batteries
7140203153 V1.4 (09.2018)
Installation, commissioning and operating instructions for valve-regulated stationary lead-acid batteries
7140203153 V1.4 (09.2018)
5.10 Connecting the batteries
The batteries are in their final position and can now be connected.
5.10.1 Connection terminals
The battery terminals of the types
sun
| power
VR M
12 V 58 – 12 V 90 have been greased at
the factory using Aeronix® battery terminal grease. Inspect each terminal for visible damage or
oxidation. If necessary you should clean the terminal by using a brush (with hard plastic bristles).
Re-grease by using the above mentioned terminal grease.
Other sealed lead acid battery types don’t need to be greased because the terminals are rubber
molded.
5.10.2 Type of connection cable
The battery system that you received is designed to produce a specified amount of power (kW) or current (A) at
a particular voltage for a certain period of time (standby time).
You should be familiar with these parameters (U, kW, A). If this is not the case, please contact your local
HOPPECKE representative.
The battery system was designed so that the electrical energy is available at the battery terminals.
Limit voltage drop between the battery terminals and electrical loads to an absolute minimum. If
the voltage drop is too large, the backup time of the battery system may be reduced.
Observe the following information:
1. Keep the cable length between the batteries and the charging rectifier/USV as short as pos-
sible.
2. The cable cross-section should be calculated so that voltage drop is negligible even at a high
current flow. Use the cross-section of the cable provided to calculate the voltage drop at the
nominal current. If in doubt, use cable with a cross-section that is one size larger.
Danger!
The connection cable must be short-circuit proof or double-wall insulated. That means:
– The insulation strength of the cable is higher than the max. system voltage or
– there is a distance of at least 100 mm between wiring and electrically conductive parts or
– connectors must be furnished with additional insulation.
– Avoid mechanical stress on the cell/battery terminals. Protect cables with large cross-sections
using cable ties and cable clamps.
The connection cables between the main connection terminals and the charging rectifier or UPS
should be flexible conductors.
5.10.3 Clamping batteries using battery connectors
There are screwed row, step and tier connectors
(see Fig. 5–15)
.
Row connectors are used to connect the individual cells/monobloc batteries, step connectors
are used to connect the individual steps to one another (for use with step racks) and the tier
connectors are used to connect the tiers (for use with tier racks).
Fig. 5–15: Using row connectors and step connectors
Attention!
Row, step, tier and end connectors are designed as screwed connectors. After loosening a con-
nection, the assembly screws must always be replaced.
5.10.4 Installing the screwed connectors
1. The batteries are connected using the insulated row connectors (Fig.
5–16). When establishing the serial connection, the batteries are arran-
ged so that the negative terminal of one battery is connected to the
positive terminal of the next battery until the entire system has reached
the necessary voltage.
Make sure that you do not cause mechanical damage to
the terminals.
Attention!
2. Attach the connectors as shown in
Fig. 5–15.
First attach the screws
by hand only so that you can make final adjustments to the cells and
connectors.
3. Tighten the screws using a torque wrench. The recommended torque is
20 Nm ±1 Nm.
It is very important to tighten screws thoroughly as a loose
connection can become very hot and result in ignition or
explosion.
Screws are approved for single use only!
Attention!
4. If necessary, fit the connectors and end terminals (connection plates)
with insulating covers.
5.10.5 Clamping connection plates onto the batteries
There are a total of 11 different types of connection plates
(see Fig. 5–15)
. Connection plates are
always used when wires must be connected to cells with multiple battery terminals.
Attention!
We strongly recommend that you use original HOPPECKE connection plates when connecting
wires to cells with multiple battery terminal pairs. Using other solutions may lead to overhea-
ting, risk of fire and increased electrical contact resistance!
Fig. 5–16: Screwed connector
installation
